研究者詳細 - 石野　宏和

論文 - 石野　宏和

分割表示 326 件中 221 - 240 件目／全件表示 >>

Measurement of time-dependent CP-Violating asymmetries in B-0 ->(KsKsKs0)-K-0-K-0 decay 査読

K Sumisawa, Y Ushiroda, M Hazumi, K Abe, K Abe, Adachi, I, H Aihara, Y Asano, Aulchenko, V, T Aushev, AM Bakich, U Bitenc, Bizjak, I, S Blyth, A Bondar, A Bozek, M Bracko, J Brodzicka, TE Browder, Y Chao, A Chen, KF Chen, WT Chen, BG Cheon, R Chistov, Y Choi, A Chuvikov, S Cole, J Dalseno, M Danilov, M Dash, A Drutskoy, S Eidelman, Y Enari, F Fang, S Fratina, N Gabyshev, A Garmash, T Gershon, G Gokhroo, B Golob, A Gorisek, J Haba, K Hara, T Hara, H Hayashii, T Higuchi, T Hokuue, Y Hoshi, S Hou, WS Hou, YB Hsiung, T Iijima, A Imoto, K Inami, A Ishikawa, H Ishino, R Itoh, M Iwasaki, Y Iwasaki, JH Kang, JS Kang, SU Kataoka, N Katayama, H Kawai, T Kawasaki, HR Khan, H Kichimi, HJ Kim, HO Kim, SK Kim, SM Kim, K Kinoshita, S Korpar, P Krizan, P Krokovny, R Kulasiri, S Kumar, CC Kuo, A Kusaka, A Kuzmin, YJ Kwon, JS Lange, G Leder, T Lesiak, SW Lin, F Mandl, D Marlow, T Matsumoto, A Matyja, W Mitaroff, K Miyabayashi, H Miyake, H Miyata, R Mizuk, T Nagamine, Y Nagasaka, E Nakano, M Nakao, Z Natkaniec, S Nishida, O Nitoh, T Nozaki, S Ogawa, T Ohshima, T Okabe, S Okuno, SL Olsen, Y Onuki, W Ostrowicz, H Ozaki, CW Park, H Park, N Parslow, LS Peak, R Pestotnik, LE Piilonen, M Rozanska, H Sagawa, Y Sakai, TR Sarangi, N Sato, T Schietinger, O Schneider, R Seuster, ME Sevior, H Shibuya, Sidorov, V, JB Singh, A Somov, R Stamen, S Stanic, M Staric, T Sumiyoshi, S Suzuki, O Tajima, F Takasaki, K Tamai, N Tamura, M Tanaka, Y Teramoto, XC Tian, K Trabelsi, T Tsuboyama, T Tsukamoto, S Uehara, T Uglov, K Ueno, S Uno, P Urquijo, G Varner, KE Varvell, S Villa, CC Wang, CH Wang, MZ Wang, QL Xie, BD Yabsley, A Yamaguchi, H Yamamoto, Y Yamashita, M Yamauchi, HY Yang, J Zhang, LM Zhang, ZP Zhang, Zhilich, V, D Zontar

PHYSICAL REVIEW LETTERS 95 ( 6 ) 1 - 6 2005年8月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：AMER PHYSICAL SOC

We present a measurement of CP-violation parameters in the B-0 ->(KSKSKS0)-K-0-K-0 decay based on a sample of 275x10(6) B (b) over bar pairs collected at the Y(4S) resonance with the Belle detector at the KEKB energy-asymmetric e(+)e(-) collider. One neutral B meson is fully reconstructed in the decay B-0 ->(KSKSKS0)-K-0-K-0, and the flavor of the accompanying B meson is identified from its decay products. CP-violation parameters are obtained from the asymmetry in the distributions of the proper-time interval between the two B decays: S = +1.26 +/- 0.68(stat) +/- 0.20(syst) and lambda = +0.54 +/- 0.34(stat) +/- 0.09(syst).

DOI： 10.1103/PhysRevLett.95.061801

Studies of CP violation in B -> J/psi Kappa(*) decays 査読

R Itoh, Y Onuki, K Abe, K Abe, Adachi, I, H Aihara, Y Asano, T Aushev, AM Bakich, Y Ban, E Barberio, A Bay, U Bitenc, Bizjak, I, S Blyth, A Bondar, A Bozek, M Bracko, J Brodzicka, TE Browder, Y Chao, A Chen, KF Chen, WT Chen, BG Cheon, R Chistov, SK Choi, Y Choi, YK Choi, A Chuvikov, S Cole, J Dalseno, M Dash, LY Dong, A Drutskoy, S Eidelman, Y Enari, F Fang, S Fratina, N Gabyshev, A Garmash, T Gershon, G Gokhroo, B Golob, A Gorisek, J Haba, K Hara, T Hara, H Hayashii, M Hazumi, T Higuchi, L Hinz, T Hokuue, Y Hoshi, S Hou, WS Hou, YB Hsiung, T Iijima, A Imoto, K Inami, A Ishikawa, H Ishino, M Iwasaki, Y Iwasaki, JH Kang, JS Kang, P Kapusta, SU Kataoka, N Katayama, H Kawai, T Kawasaki, HR Khan, H Kichimi, HJ Kim, SM Kim, K Kinoshita, S Korpar, P Krizan, P Krokovny, S Kumar, CC Kuo, A Kusaka, A Kuzmin, YJ Kwon, G Leder, SE Lee, T Lesiak, J Li, SW Lin, G Majumder, F Mandl, T Matsumoto, A Matyja, Y Mikami, W Mitaroff, K Miyabayashi, H Miyake, H Miyata, R Mizuk, D Mohapatra, T Nagamine, E Nakano, M Nakao, H Nakazawa, Z Natkaniec, S Nishida, O Nitoh, T Nozaki, S Ogawa, T Ohshima, T Okabe, S Okuno, SL Olsen, W Ostrowicz, H Ozaki, P Pakhlov, H Palka, H Park, N Parslow, LS Peak, R Pestotnik, LE Piilonen, A Poluektov, M Rozanska, H Sagawa, Y Sakai, N Sato, T Schietinger, O Schneider, P Schonmeier, J Schumann, AJ Schwartz, K Senyo, ME Sevior, H Shibuya, B Shwartz, Sidorov, V, JB Singh, A Somov, N Soni, R Stamen, S Stanic, M Staric, K Sumisawa, T Sumiyoshi, S Suzuki, SY Suzuki, O Tajima, F Takasaki, K Tamai, N Tamura, M Tanaka, Y Teramoto, XC Tian, K Trabelsi, T Tsuboyama, T Tsukamoto, S Uehara, T Uglov, K Ueno, Y Unno, S Uno, P Urquijo, Y Ushiroda, G Varner, KE Varvell, CC Wang, CH Wang, Y Watanabe, QL Xie, BD Yabsley, A Yamaguchi, Y Yamashita, M Yamauchi, H Yang, J Zhang, LM Zhang, ZP Zhang, Zhilich, V, D Zontar

PHYSICAL REVIEW LETTERS 95 ( 9 ) 1 - 6 2005年8月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：AMER PHYSICAL SOC

CP violation in B -> J/psi K-* decays is studied using an angular analysis in a data sample of 253 fb(-1) recorded with the Belle detector at the KEKB e(+)e(-) collider. The flavor separated measurements of the decay amplitudes indicate no evidence for direct CP violation. T-odd CP violation is studied using the asymmetries in triple product correlations, and the results are consistent with the standard model null predictions. The time-dependent angular analysis gives the following values of CP-violating parameters: sin2 phi(1)=0.24 +/- 0.31 +/- 0.05 and cos2 phi(1)=0.56 +/- 0.79 +/- 0.11.

DOI： 10.1103/PhysRevLett.95.091601

Time-dependent CP-violating asymmetries in b -> s(q)over-barq transitions 査読

KF Chen, F Fang, A Garmash, K Hara, M Hazumi, T Higuchi, H Kakuno, A Kusaka, T Shibata, O Tajima, K Trabelsi, T Ziegler, K Abe, K Abe, H Aihara, Y Asano, T Aushev, S Bahinipati, AM Bakich, Y Ban, E Barberio, M Barbero, A Bay, Bedny, I, U Bitenc, Bizjak, I, S Blyth, A Bondar, A Bozek, M Bracko, J Brodzicka, TE Browder, P Chang, Y Chao, A Chen, WT Chen, BG Cheon, R Chistov, SK Choi, Y Choi, YK Choi, A Chuvikov, J Dalseno, M Danilov, M Dash, LY Dong, A Drutskoy, S Eidelman, Y Enari, S Fratina, N Gabyshev, T Gershon, G Gokhroo, B Golob, A Gorisek, J Haba, T Hara, H Hayashii, L Hinz, T Hokuue, Y Hoshi, S Hou, WS Hou, YB Hsiung, T Iijima, A Imoto, K Inami, A Ishikawa, H Ishino, R Itoh, M Iwasaki, Y Iwasaki, JH Kang, JS Kang, P Kapusta, SU Kataoka, N Katayama, H Kawai, T Kawasaki, HR Khan, H Kichimi, HJ Kim, SM Kim, K Kinoshita, S Korpar, P Krizan, P Krokovny, S Kumar, CC Kuo, A Kuzmin, YJ Kwon, G Leder, SE Lee, T Lesiak, J Li, SW Lin, D Liventsev, G Majumder, F Mandl, D Marlow, T Matsumoto, A Matyja, Y Mikami, W Mitaroff, K Miyabayashi, H Miyake, H Miyata, R Mizuk, T Nagamine, Y Nagasaka, Nakamura, I, E Nakano, M Nakao, Z Natkaniec, S Nishida, O Nitoh, S Noguchi, T Nozaki, S Ogawa, T Ohshima, T Okabe, S Okuno, SL Olsen, Y Onuki, W Ostrowicz, P Pakhlov, H Palka, CW Park, H Park, N Parslow, LS Peak, R Pestotnik, LE Piilonen, M Rozanska, H Sagawa, Y Sakai, TR Sarangi, N Sato, T Schietinger, O Schneider, P Schonmeier, J Schumann, C Schwanda, AJ Schwartz, K Senyo, ME Sevior, H Shibuya, B Shwartz, Sidorov, V, A Somov, N Soni, R Stamen, S Stanic, M Staric, K Sumisawa, T Sumiyoshi, S Suzuki, SY Suzuki, F Takasaki, N Tamura, M Tanaka, Y Teramoto, XC Tian, T Tsuboyama, T Tsukamoto, S Uehara, T Uglov, K Ueno, S Uno, P Urquijo, Y Ushiroda, G Varner, KE Varvell, S Villa, CC Wang, CH Wang, MZ Wang, Y Watanabe, QL Xie, BD Yabsley, A Yamaguchi, Y Yamashita, M Yamauchi, H Yang, J Zhang, LM Zhang, ZP Zhang, Zhilich, V, D Zontar

PHYSICAL REVIEW D 72 ( 1 ) 1 - 15 2005年7月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：AMER PHYSICAL SOC

We present new measurements of CP-violation parameters in B-0 ->phi K-0, (K+K-KS0), f(0)(980)K-S(0), eta'K-S(0), omega K-S(0), and K-S(0)pi(0) decays based on a sample of 275 x 10(6) B (B) over bar pairs collected at the Upsilon(4S) resonance with the Belle detector at the KEKB energy-asymmetric e(+)e(-) collider. One neutral B meson is fully reconstructed in one of the specified decay channels, and the flavor of the accompanying B meson is identified from its decay products. CP-violation parameters for each of the decay modes are obtained from the asymmetries in the distributions of the proper-time intervals between the two B decays. The combined result for the B-0 ->phi K-0, (K+K-KS0), f(0)(980)K-S(0), eta'K-S(0), omega K-S(0), K-S(0)pi(0), and previously reported (KSKSKS0)-K-0-K-0 decays differs from the SM expectation by 2.4 standard deviations.

DOI： 10.1103/PhysRevD.72.012004

Measurement of the time-dependent CP-violating asymmetry in B-0 -> K-S(0)pi(0)gamma decays 査読

Y Ushiroda, K Sumisawa, M Hazumi, K Abe, K Abe, Adachi, I, H Aihara, Y Asano, Aulchenko, V, T Aushev, AM Bakich, A Bay, Bedny, I, U Bitenc, Bizjak, I, S Blyth, A Bondar, A Bozek, M Bracko, J Brodzicka, TE Browder, MC Chang, P Chang, Y Chao, A Chen, KF Chen, WT Chen, BG Cheon, SK Choi, Y Choi, A Chuvikov, S Cole, J Dalseno, M Danilov, M Dash, J Dragic, S Eidelman, F Fang, S Fratina, N Gabyshev, T Gershon, G Gokhroo, A Gorisek, J Haba, K Hara, NC Hastings, K Hayasaka, H Hayashii, T Higuchi, L Hinz, T Hokuue, Y Hoshi, S Hou, WS Hou, YB Hsiung, T Iijima, A Imoto, K Inami, A Ishikawa, H Ishino, R Itoh, M Iwasaki, Y Iwasaki, JH Kang, JS Kang, P Kapusta, N Katayama, H Kawai, T Kawasaki, HR Khan, H Kichimi, HJ Kim, SM Kim, K Kinoshita, P Krizan, P Krokovny, S Kumar, CC Kuo, A Kusaka, A Kuzmin, YJ Kwon, G Leder, T Lesiak, J Li, A Limosani, SW Lin, D Liventsev, F Mandl, T Matsumoto, Y Mikami, W Mitaroff, K Miyabayashi, H Miyake, H Miyata, D Mohapatra, GR Moloney, T Nagamine, E Nakano, M Nakao, S Nishida, O Nitoh, T Nozaki, S Ogawa, T Ohshima, T Okabe, S Okuno, SL Olsen, W Ostrowicz, H Ozaki, P Pakhlov, H Palka, CW Park, N Parslow, LS Peak, R Pestotnik, LE Piilonen, H Sagawa, Y Sakai, N Sato, T Schietinger, O Schneider, AJ Schwartz, K Senyo, ME Sevior, T Shibata, H Shibuya, JB Singh, A Somov, N Soni, R Stamen, S Stanic, M Staric, T Sumiyoshi, S Suzuki, O Tajima, F Takasaki, K Tamai, N Tamura, M Tanaka, Y Teramoto, XC Tian, K Trabelsi, T Tsuboyama, T Tsukamoto, S Uehara, T Uglov, S Uno, P Urquijo, G Varner, KE Varvell, S Villa, CC Wang, CH Wang, M Watanabe, Y Watanabe, QL Xie, A Yamaguchi, Y Yamashita, M Yamauchi, HY Yang, J Ying, J Zhang, LM Zhang, ZP Zhang, D Zontar

PHYSICAL REVIEW LETTERS 94 ( 23 ) 1 - 5 2005年6月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：AMER PHYSICAL SOC

We present a new measurement of CP-violation parameters in B-0-> K(S)(0)pi(0)gamma decay based on a sample of 275x10(6) B (B) over bar pairs collected at the Upsilon(4S) resonance with the Belle detector at the KEKB energy-asymmetric e(+)e(-) collider. One of the B mesons is fully reconstructed in the B-0-> K(S)(0)pi(0)gamma decay. The flavor of the accompanying B meson is identified from its decay products. CP-violation parameters are obtained from the asymmetry in the distribution of the proper time intervals between the two B decays. We obtain S(KS)(0)pi(0)gamma=-0.58(-0.38)(+0.46)(stat)+/- 0.11(syst) and A(KS)(0)pi(0)gamma=+0.03 +/- 0.34(stat)+/- 0.11(syst), for the K(S)(0)pi(0) invariant mass covering the full range up to 1.8 GeV/c(2). We also measure the CP-violation parameters for the case B-0-> K-*0(-> K(S)(0)pi(0))gamma and obtain S(K)(*0)gamma=-0.79(-0.50)(+0.63)(stat)+/- 0.10(syst) for A(K)(*0)gamma fixed at 0.

DOI： 10.1103/PhysRevLett.94.231601

Measurement of polarization and triple-product correlations in B -> phi K-* decays 査読

KF Chen, K Abe, K Abe, H Aihara, Y Asano, Aulchenko, V, T Aushev, S Bahinipati, AM Bakich, Bedny, I, U Bitenc, Bizjak, I, S Blyth, A Bondar, A Bozek, M Bracko, J Brodzicka, TE Browder, MC Chang, P Chang, Y Chao, A Chen, WT Chen, BG Cheon, R Chistov, SK Choi, Y Choi, A Chuvikov, J Dalseno, M Danilov, M Dash, A Drutskoy, S Eidelman, Y Enari, F Fang, S Fratina, N Gabyshev, A Garmash, T Gershon, G Gokhroo, B Golob, A Gorisek, J Haba, NC Hastings, K Hayasaka, H Hayashii, M Hazumi, L Hinz, T Hokuue, Y Hoshi, S Hou, WS Hou, YB Hsiung, T Iijima, A Imoto, K Inami, A Ishikawa, H Ishino, R Itoh, M Iwasaki, Y Iwasaki, JH Kang, JS Kang, P Kapusta, N Katayama, H Kawai, T Kawasaki, HR Khan, H Kichimi, HJ Kim, SK Kim, SM Kim, K Kinoshita, S Korpar, P Krizan, P Krokovny, S Kumar, CC Kuo, A Kuzmin, YJ Kwon, JS Lange, G Leder, SE Lee, YJ Lee, T Lesiak, J Li, SW Lin, D Liventsev, J MacNaughton, F Mandl, T Matsumoto, A Matyja, Y Mikami, W Mitaroff, K Miyabayashi, H Miyake, H Miyata, R Mizuk, D Mohapatra, GR Moloney, T Nagamine, Y Nagasaka, E Nakano, M Nakao, H Nakazawa, Z Natkaniec, S Nishida, O Nitoh, T Nozaki, S Ogawa, T Ohshima, T Okabe, S Okuno, SL Olsen, W Ostrowicz, H Ozaki, P Pakhlov, H Palka, CW Park, N Parslow, LS Peak, R Pestotnik, LE Piilonen, N Root, M Rozanska, H Sagawa, Y Sakai, TR Sarangi, N Sato, T Schietinger, O Schneider, J Schumann, C Schwanda, AJ Schwartz, K Senyo, ME Sevior, T Shibata, H Shibuya, B Shwartz, Sidorov, V, JB Singh, A Somov, N Soni, R Stamen, S Stanic, M Staric, K Sumisawa, T Sumiyoshi, O Tajima, F Takasaki, K Tamai, N Tamura, M Tanaka, Y Teramoto, XC Tian, K Trabelsi, T Tsukamoto, S Uehara, T Uglov, K Ueno, S Uno, P Urquijo, Y Ushiroda, G Varner, KE Varvell, S Villa, CC Wang, CH Wang, MZ Wang, M Watanabe, Y Watanabe, QL Xie, BD Yabsley, A Yamaguchi, Y Yamashita, M Yamauchi, HY Yang, J Ying, J Zhang, LM Zhang, ZP Zhang, Zhilich, V, D Zontar, D Zurcher

PHYSICAL REVIEW LETTERS 94 ( 22 ) 2005年6月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：AMER PHYSICAL SOC

We present measurements of decay amplitudes and triple-product correlations in B ->phi K-* decays based on 253 fb(-1) of data recorded at the Upsilon(4S) resonance with the Belle detector at the KEKB e(+)e(-) storage ring. The decay amplitudes for the three different helicity states are determined from the angular distributions of final-state particles. The longitudinal polarization amplitudes are found to be 0.45 +/- 0.05 +/- 0.02 for B-0->phi K-*0 and 0.52 +/- 0.08 +/- 0.03 for B+->phi K*+ decays. CP- and T-odd CP-violating triple-product asymmetries are measured to be consistent with zero.

DOI： 10.1103/PhysRevLett.94.221804

Radiation monitoring in Mrad range using radiation-sensing field-effect transistors 査読

S Stanic, Y Asano, H Ishino, A Igarashi, S Iwaida, Y Nakano, H Terazaki, T Tsuboyama, Yoda, I, D Zontar

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT 545 ( 1-2 ) 252 - 260 2005年6月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：ELSEVIER SCIENCE BV

In many of the recent e(+)e(-) particle physics experiment, monitoring of the accumulated dose in silicon is essential to maximize the lifetime of silicon vertex detectors operating in severe radiation environments Using radiation-sensing field-effect transistors (RadFET) as radiation monitoring devices. We Studied their responses during irradiation and during subsequent annealing. The relation between the RadFET response and the dose was determined by irradiations with a Co-60 source with known activity. The study of annealing at three different temperatures showed that RadFETS gradually anneal for up to 40%. Annealing can be fitted h a sum of two exponential functions with time constants of 3 and 85 days. (c) 2005 Elsevier B.V. All rights reserved.

DOI： 10.1016/j.nima.2005.01.347

Improved measurement of CP-violation parameters sin2 phi(1) and vertical bar lambda vertical bar, B meson lifetimes, and B(0)-(B)over-bar(0) mixing parameter Delta m(d) (vol D 71, art no 072003, 2005) 査読

K Abe, K Abe, Adachi, I, H Aihara, M Akatsu, Y Asano, T Aushev, T Aziz, S Bahinipati, AM Bakich, Y Ban, S Banerjee, A Bay, Bedny, I, U Bitenc, Bizjak, I, S Blyth, A Bondar, A Bozek, M Bracko, J Brodzicka, TE Browder, P Chang, Y Chao, A Chen, KF Chen, WT Chen, BG Cheon, R Chistov, SK Choi, Y Choi, A Chuvikov, S Cole, J Dalseno, M Danilov, M Dash, A Drutskoy, S Eidelman, Eiges, V, F Fang, S Fratina, N Gabyshev, A Garmash, T Gershon, A Go, G Gokhroo, B Golob, J Haba, K Hara, NC Hastings, K Hayasaka, H Hayashii, M Hazumi, Higuchi, I, T Higuchi, L Hinz, T Hokuue, Y Hoshi, S Hou, WS Hou, T Iijima, A Imoto, K Inami, A Ishikawa, H Ishino, R Itoh, Y Iwasaki, H Kakuno, JH Kang, JS Kang, P Kapusta, SU Kataoka, N Katayama, H Kawai, T Kawasaki, H Kichimi, HJ Kim, JH Kim, SK Kim, SM Kim, K Kinoshita, P Koppenburg, S Korpar, P Krizan, P Krokovny, CC Kuo, YJ Kwon, JS Lange, G Leder, SH Lee, T Lesiak, J Li, SW Lin, D Liventsev, J MacNaughton, G Majumder, F Mandl, D Marlow, T Matsumoto, A Matyja, W Mitaroff, K Miyabayashi, H Miyake, H Miyata, R Mizuk, T Nagamine, Y Nagasaka, Nakamura, I, E Nakano, M Nakao, S Nishida, O Nitoh, S Noguchi, T Nozaki, S Ogawa, T Ohshima, T Okabe, S Okuno, SL Olsen, Y Onuki, W Ostrowicz, H Ozaki, P Pakhlov, H Palka, CW Park, N Parslow, R Pestotnik, LE Piilonen, M Rozanska, H Sagawa, Y Sakai, N Sato, T Schietinger, O Schneider, J Schumann, C Schwanda, AJ Schwartz, S Semenov, K Senyo, ME Sevior, T Shibata, H Shibuya, B Shwartz, Sidorov, V, JB Singh, A Somov, N Soni, R Stamen, S Stanic, M Staric, K Sumisawa, T Sumiyoshi, S Suzuki, SY Suzuki, O Tajima, F Takasaki, K Tamai, N Tamura, M Tanaka, Y Teramoto, XC Tian, K Trabelsi, T Tsuboyama, T Tsukamoto, S Uehara, T Uglov, K Ueno, S Uno, Y Ushiroda, KE Varvell, S Villa, CC Wang, CH Wang, M Watanabe, Y Watanabe, BD Yabsley, A Yamaguchi, H Yamamoto, Y Yamashita, M Yamauchi, J Ying, Y Yusa, CC Zhang, J Zhang, LM Zhang, ZP Zhang, Zhilich, V, D Zontar

PHYSICAL REVIEW D 71 ( 7 ) 1 - 12 2005年4月

Study of B-0 -> rho(+/-)pi(-/+) time-dependent CP violation at Belle 査読

CC Wang, K Abe, K Abe, T Abe, Adachi, I, H Aihara, Y Asano, T Aushev, AM Bakich, Y Ban, A Bay, Bedny, I, U Bitenc, Bizjak, I, S Blyth, A Bondar, A Bozek, M Bracko, TE Browder, P Chang, Y Chao, KF Chen, WT Chen, BG Cheon, SK Choi, Y Choi, A Chuvikov, S Cole, M Dash, LY Dong, J Dragic, A Drutskoy, S Eidelman, Eiges, V, T Gershon, G Gokhroo, R Guo, J Haba, NC Hastings, K Hayasaka, H Hayashii, M Hazumi, T Hokuue, Y Hoshi, S Hou, WS Hou, YB Hsiung, T Iijima, A Imoto, K Inami, A Ishikawa, H Ishino, K Itoh, R Itoh, H Iwasaki, Y Iwasaki, H Kakuno, JH Kang, JS Kang, P Kapusta, N Katayama, T Kawasaki, HR Khan, H Kichimi, HJ Kim, K Kinoshita, P Krizan, P Krokovny, S Kumar, YJ Kwon, JS Lange, SE Lee, YJ Lee, T Lesiak, J Li, A Limosani, SW Lin, J MacNaughton, T Matsumoto, A Matyja, Y Mikami, W Mitaroff, H Miyata, R Mizuk, D Mohapatra, T Mori, Y Nagasaka, T Nakadaira, E Nakano, M Nakao, Z Natkaniec, S Nishida, O Nitoh, T Nozaki, S Ogawa, T Ohshima, T Okabe, S Okuno, SL Olsen, W Ostrowicz, H Ozaki, P Pakhlov, CW Park, N Parslow, LS Peak, LE Piilonen, FJ Ronga, M Rozanska, H Sagawa, S Saitoh, Y Sakai, N Sato, T Schietinger, O Schneider, J Schumann, AJ Schwartz, S Semenov, K Senyo, ME Sevior, H Shibuya, JB Singh, A Somov, R Stamen, S Stanic, M Staric, K Sumisawa, T Sumiyoshi, SY Suzuki, O Tajima, F Takasaki, K Tamai, M Tanaka, GN Taylor, Y Teramoto, XC Tian, K Trabelsi, T Tsukamoto, S Uehara, T Uglov, K Ueno, S Uno, G Varner, KE Varvell, S Villa, CH Wang, MZ Wang, M Watanabe, BD Yabsley, Y Yamada, A Yamaguchi, Y Yamashita, M Yamauchi, J Ying, Y Yusa, J Zhang, LM Zhang, ZP Zhang, Zhilich, V, T Ziegler, D Zontar

PHYSICAL REVIEW LETTERS 94 ( 12 ) 1 - 6 2005年4月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：AMER PHYSICAL SOC

We present a time-dependent analysis of CP violation in B-0->rho(+/-)pi(-/+) decays based on a 140 fb(-1) data sample collected at the Upsilon(4S) resonance with the Belle detector at KEKB. We obtain the charge asymmetry A(CP)(rho pi) = -0.16 +/- 0.10(stat)+/- 0.02(syst). An unbinned maximum-likelihood fit to the Delta t distributions yields C-rho pi = 0.25 +/- 0.17(stat)(-0.06)(+0.02)(syst), Delta C-rho pi = 0.38 +/- 0.18(stat)(-0.04)(+0.02)(syst), S-rho pi = -0.28 +/- 0.23(stat)(-0.08)(+0.10)(syst), and Delta S-rho pi = -0.30 +/- 0.24(stat)+/- 0.09(syst). The direct CP violation parameters for B ->rho(+)pi(-) and B ->rho(-)pi(+) decays are A(rho pi)(+) = -0.02 +/- 0.16(stat)(-0.02)(+0.05)(syst) and A(rho pi)(-+)= -0.53 +/- 0.29(stat)(-0.04)(+0.09)(syst).

DOI： 10.1103/PhysRevLett.94.121801

The silicon vertex detector for the super B factory 査読

T Tsuboyama, R Abe, T Abe, H Aihara, Y Asano, T Aso, A Bakich, T Browder, MC Chang, Y Chao, KF Chen, S Chidzik, J Dalseno, R Dowd, J Dragic, CW Everton, R Fernholzq, M Friedl, H Fujii, ZW Gao, A Gordon, YN Guo, J Haba, K Hara, T Hara, Y Harada, T Haruyama, K Hasuko, K Hayashi, M Hazumi, EM Heenan, T Higuchi, H Hirai, N Hitomi, A Igarashi, Y Igarashi, H Ikeda, H Ishino, K Itoh, S Iwaida, J Kaneko, P Kapusta, R Karawatzki, K Kasami, H Kawai, T Kawasaki, A Kibayashi, S Koike, S Korpar, P Krizan, H Kurashiro, A Kusaka, T Lesiak, A Limosani, WC Lin, D Marlow, H Matsumoto, Y Mikami, H Miyake, GR Moloney, T Mori, T Nakadaira, Y Nakano, Z Natkaniec, S Nozaki, R Ohkubo, F Ohno, S Okuno, Y Onuki, W Ostrowicz, H Ozaki, L Peak, M Pernicka, M Rosen, M Rozanska, N Sato, S Schmid, T Shibata, R Stamen, S Stanic, H Steininger, K Sumisawa, J Suzuki, H Tajima, O Tajima, K Takahashi, F Takasaki, N Tamura, M Tanaka, GN Taylor, H Terazaki, T Tomura, K Trabelsi, W Trischuk, K Uchida, K Ueno, K Ueno, N Uozaki, Y Ushiroda, S Vahsen, G Varner, K Varvell, YS Velikzhanin, CC Wang, MZ Wang, M Watanabe, Y Watanabe, Y Yamada, H Yamamoto, Y Yamashita, D Yamashita, M Yamauchi, H Yanai, R Yang, Y Yasu, D Yokoyama, T Ziegler, D Zontar

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT 541 ( 1-2 ) 421 - 426 2005年4月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：ELSEVIER SCIENCE BV

The present B factories, running at the luminosity of similar to 1 x 10(34) cm(-2) s(-1), have established a large time-dependent CP asymmetry in B decays. Upgrade of the KEKB accelerator to a luminosity of 5 x 10(35) cm(-2) s(-1), designated Super KEKB, has been proposed to extend physics reach beyond the standard model. Since measurement of time evolution of B mesons is essential, the silicon vertex detector, SVD, should be redesigned to meet the data rates and radiation backgrounds expected in this Super KEKB environment. The detector configuration, sensor options and read out electronics are discussed. (c) 2005 Elsevier B.V. All rights reserved.

DOI： 10.1016/j.nima.2005.01.084

Status of the Belle Silicon Vertex Detector 査読

R Stamen, R Abe, T Abe, H Aihara, Y Asano, T Aso, A Bakich, T Browder, MC Chang, Y Chao, KF Chen, S Chidzik, J Dalseno, R Dowd, J Dragic, CW Everton, R Fernholz, M Friedl, H Fujii, ZW Gao, A Gordon, YN Guo, J Haba, K Hara, T Hara, Y Harada, T Haruyama, K Hasuko, K Hayashi, M Hazumi, EM Heenan, T Higuchi, H Hirai, N Hitomi, A Igarashi, Y Igarashi, H Ikeda, H Ishino, K Itoh, S Iwaida, J Kaneko, P Kapusta, R Karawatzki, K Kasami, H Kawai, T Kawasaki, A Kibayashi, S Koike, S Korpar, P Krizan, H Kurashiro, A Kusaka, T Lesiak, A Limosani, WC Lin, D Marlow, H Matsumoto, Y Mikami, H Miyake, GR Moloney, T Mori, T Nakadaira, Y Nakano, Z Natkaniec, S Nozaki, R Ohkubo, F Ohno, S Okuno, Y Onuki, W Ostrowicz, H Ozaki, L Peak, M Pernicka, M Rosen, M Rozanska, N Sato, S Schmid, T Shibata, S Stanic, H Steininger, K Sumisawa, J Suzuki, H Tajima, O Tajima, K Takahashi, F Takasaki, N Tamura, M Tanaka, GN Taylor, H Terazaki, T Tomura, K Trabelsi, W Trischuk, T Tsuboyama, K Uchida, K Ueno, K Ueno, N Uozaki, Y Ushiroda, S Vahsen, G Varner, K Varvell, YS Velikzhanin, CC Wang, MZ Wang, M Watanabe, Y Watanabe, Y Yamada, H Yamamoto, Y Yamashita, Y Yamashita, M Yamauchi, H Yanai, R Yang, Y Yasu, M Yokoyama, T Ziegler, D Zontar

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT 541 ( 1-2 ) 61 - 66 2005年4月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：ELSEVIER SCIENCE BV

The Silicon Vertex Detector (SVD) of the Belle experiment is one of the main components for the investigation of time-dependent CP-asymmetries at the B-factory at KEK. The first version of this device (SVD1) was operated for 4 years starting in 1999 with excellent performance. However, its major limitations necessitated the design of a new detector (SVD2) which was installed in the summer shutdown of 2003. The improvements of the hardware and first results on the performance under real beam conditions are presented. (c) 2005 Published by Elsevier B.V.

DOI： 10.1016/j.nima.2005.01.038

Belle results on time dependent CP violation in B decays

H Ishino

INTERNATIONAL JOURNAL OF MODERN PHYSICS A 20 ( 2-3 ) 365 - 374 2005年1月

担当区分：筆頭著者記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：WORLD SCIENTIFIC PUBL CO PTE LTD

We report on measurements of time-dependent, CP-violation parameters in neutral B meson systems based on a 140 fb(-1) data sample collected at the Y(4S) resonance with the Belle detector at the KEKB energy-asymmetric e(+)e(-) collider. One B meson is fully reconstructed in one of the CP eigenstate decay channels, and its flavor is identified from the decay products of the accompanying B meson. The CP-violation parameters are extracted from the asymmetries in the distributions of the proper-time intervals between the two B decays. The parameter sin 2 phi(1) is measured with the decay modes including the b -> c tree and b -> s penguin transitions, and sin 202 is obtained from the decay mode B -> pi(+)pi(-). A brief discussion of the phi(3) measurements with B -> D(*) (-/+)pi(+/-) decays is also given.

DOI： 10.1142/S0217751X05021531

Measurement of the branching fraction and CP asymmetry in B+->rho(+)pi(0) 査読

J Zhang, K Abe, K Abe, T Abe, H Aihara, Y Asano, Aulchenko, V, T Aushev, T Aziz, S Bahinipati, AM Bakich, A Bay, Bedny, I, U Bitenc, Bizjak, I, S Blyth, A Bondar, A Bozek, M Bracko, TE Browder, P Chang, Y Chao, KF Chen, BG Cheon, R Chistov, SK Choi, Y Choi, A Chuvikov, M Danilov, M Dash, LY Dong, J Dragic, A Drutskoy, S Eidelman, Eiges, V, Y Enari, S Fratina, N Gabyshev, A Garmash, T Gershon, G Gokhroo, B Golob, H Hayashii, M Hazumi, T Higuchi, L Hinz, T Hokuue, Y Hoshi, WS Hou, YB Hsiung, T Iijima, A Imoto, K Inami, A Ishikawa, H Ishino, R Itoh, H Iwasaki, M Iwasaki, Y Iwasaki, JH Kang, JS Kang, N Katayama, H Kawai, T Kawasaki, HR Khan, H Kichimi, HJ Kim, JH Kim, TH Kim, K Kinoshita, P Koppenburg, S Korpar, P Krizan, P Krokovny, S Kumar, A Kuzmin, YJ Kwon, G Leder, SE Lee, SH Lee, T Lesiak, J Li, A Limosani, SW Lin, J MacNaughton, G Majumder, F Mandl, T Matsumoto, W Mitaroff, K Miyabayashi, H Miyake, H Miyata, R Mizuk, D Mohapatra, GR Moloney, T Mori, T Nagamine, Y Nagasaka, M Nakao, S Nishida, O Nitoh, T Nozaki, T Okabe, S Okuno, SL Olsen, W Ostrowicz, H Ozaki, P Pakhlov, CW Park, H Park, N Parslow, LE Piilonen, FJ Ronga, M Rozanska, H Sagawa, Y Sakai, TR Sarangi, O Schneider, J Schumann, AJ Schwartz, S Semenov, K Senyo, ME Sevior, H Shibuya, B Shwartz, A Somov, N Soni, R Stamen, S Stanic, M Staric, K Sumisawa, T Sumiyoshi, S Suzuki, O Tajima, F Takasaki, K Tamai, M Tanaka, GN Taylor, Y Teramoto, T Tomura, T Tsuboyama, T Tsukamoto, S Uehara, T Uglov, K Ueno, Y Unno, S Uno, G Varner, KE Varvell, S Villa, CC Wang, CH Wang, MZ Wang, M Watanabe, Y Watanabe, BD Yabsley, Y Yamada, A Yamaguchi, Y Yamashita, M Yamauchi, HY Yang, J Ying, Y Yusa, SL Zang, CC Zhang, ZP Zhang, Zhilich, V, T Ziegler, D Zontar

PHYSICAL REVIEW LETTERS 94 ( 3 ) 1 - 5 2005年1月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：AMER PHYSICAL SOC

We report a measurement of the branching fraction for the decay B+-->rho(+)pi(0) based on a 140 fb(-1) data sample collected with the Belle detector at the KEKB asymmetric e(+)e(-) collider. We measure the branching fraction B(B+-->rho(+)pi(0))=(13.2+/-2.3(stat)(-1.9)(+1.4)(syst))x10(-6), and the CP-violating asymmetry A(CP)(B-/+-->rho(-/+)pi(0))=0.06+/-0.17(stat)(-0.05)(+0.04)(syst).

DOI： 10.1103/PhysRevLett.94.031801

Search for nucleon decay via modes favored by supersymmetric grand unification models in Super-Kamiokande-I 査読

Kobayashi, K., Earl, M., Ashie, Y., Hosaka, J., Ishihara, K., Itow, Y., Kameda, J., Koshio, Y., Minamino, A., Mitsuda, C., Miura, M., Moriyama, S., Nakahata, M., Namba, T., Nambu, R., Obayashi, Y., Shiozawa, M., Suzuki, Y., Takeuchi, Y., Taki, K., Yamada, S., Ishitsuka, M., Kajita, T., Kaneyuki, K., Nakayama, S., Okada, A., Okumura, K., Ooyabu, T., Saji, C., Takenaga, Y., Desai, S., Kearns, E., Likhoded, S., Stone, J.L., Sulak, L.R., Wang, W., Goldhaber, M., Casper, D., Cravens, J.P., Gajewski, W., Kropp, W.R., Liu, D.W., Mine, S., Smy, M.B., Sobel, H.W., Sterner, C.W., Vagins, M.R., Ganezer, K.S., Hill, J.E., Keig, W.E., Jang, J.S., Kim, J.Y., Lim, I.T., Scholberg, K., Walter, C.W., Ellsworth, R.W., Tasaka, S., Guillian, G., Kibayashi, A., Learned, J.G., Matsuno, S., Takemori, D., Messier, M.D., Hayato, Y., Ichikawa, A.K., Ishida, T., Ishii, T., Iwashita, T., Kobayashi, T., Maruyama, T., Nakamura, K., Nitta, K., Oyama, Y., Sakuda, M., Totsuka, Y., Suzuki, A.T., Hasegawa, M., Hayashi, K., Kato, I., Maesaka, H., Morita, T., Nakadaira, T., Nakaya, T., Nishikawa, K., Sasaki, T., Ueda, S., Yamamoto, S., Yokoyama, M., Haines, T.J., Dazeley, S., Hatakeyama, S., Svoboda, R., Blaufuss, E., Goodman, J.A., Sullivan, G.W., Turcan, D., Habig, Alec, Fukuda, Y., Jung, C.K., Kato, T., Malek, M., Mauger, C., McGrew, C., Sarrat, A., Sharkey, E., Yanagisawa, C., Toshito, T., Miyano, K., Tamura, N., Ishii, J., Kuno, Y., Yoshida, M., Kim, S.B., Yoo, J., Okazawa, H., Ishizuka, T., Choi, Y., Seo, H.K., Gando, Y., Hasegawa, T., Inoue, K., Shirai, J., Suzuki, A., Koshiba, M., Nakajima, Y., Nishijima, K., Harada, T., Ishino, H., Watanabe, Y., Kielczewska, D., Zalipska, J., Berns, H.G., Gran, R., Shiraishi, K.K., Stachyra, A., Washburn, K., Wilkes, R.J.

Phys.Rev.D 72 ( 052007 ) 052007 - 052007 2005年

A Measurement of atmospheric neutrino oscillation parameters by SUPER-KAMIOKANDE I 査読

Ashie, Y., Hosaka, J., Ishihara, K., Itow, Y., Kameda, J., Koshio, Y., Minamino, A., Mitsuda, C., Miura, M., Moriyama, S., Nakahata, M., Namba, T., Nambu, R., Obayashi, Y., Shiozawa, M., Suzuki, Y., Takeuchi, Y., Taki, K., Yamada, S., Ishitsuka, M., Kajita, T., Kaneyuki, K., Nakayama, S., Okada, A., Okumura, K., Saji, C., Takenaga, Y., Clark, S.T., Desai, S., Kearns, E., Likhoded, S., Stone, J.L., Sulak, L.R., Wang, W., Goldhaber, M., Casper, D., Cravens, J.P., Gajewski, W., Kropp, W.R., Liu, D.W., Mine, S., Smy, M.B., Sobel, H.W., Sterner, C.W., Vagins, M.R., Ganezer, K.S., Hill, J., Keig, W.E., Jang, J.S., Kim, J.Y., Lim, I.T., Scholberg, K., Walter, C.W., Ellsworth, R.W., Tasaka, S., Guillian, G., Kibayashi, A., Learned, J.G., Matsuno, S., Takemori, D., Messier, M.D., Hayato, Y., Ichikawa, A.K., Ishida, T., Ishii, T., Iwashita, T., Kobayashi, T., Maruyama, T., Nakamura, K., Nitta, K., Oyama, Y., Sakuda, M., Totsuka, Y., Suzuki, A.T., Hasegawa, M., Hayashi, K., Kato, I., Maesaka, H., Morita, T., Nakaya, T., Nishikawa, K., Sasaki, T., Ueda, S., Yamamoto, S., Haines, T.J., Dazeley, S., Hatakeyama, S., Svoboda, R., Blaufuss, E., Goodman, J.A., Sullivan, G.W., Turcan, D., Habig, Alec, Fukuda, Y., Jung, C.K., Kato, T., Kobayashi, K., Malek, M., Mauger, C., McGrew, C., Sarrat, A., Sharkey, E., Yanagisawa, C., Toshito, T., Miyano, K., Tamura, N., Ishii, J., Kuno, Y., Yoshida, M., Kim, S.B., Yoo, J., Okazawa, H., Ishizuka, T., Choi, Y., Seo, H.K., Gando, Y., Hasegawa, T., Inoue, K., Shirai, J., Suzuki, A., Koshiba, M., Nakajima, Y., Nishijima, K., Harada, T., Ishino, H., Watanabe, Y., Kielczewska, D., Zalipska, J., Berns, H.G., Gran, R., Shiraishi, K.K., Stachyra, A., Washburn, K., Wilkes, R.J.

Phys.Rev.D 71 ( 11 ) 112005 - 112005 2005年

Measurement of atmospheric neutrino oscillation parameters by Super-Kamiokande I 査読

Y. Ashie, J. Hosaka, K. Ishihara, Y. Itow, J. Kameda, Y. Koshio, A. Minamino, C. Mitsuda, M. Miura, S. Moriyama, M. Nakahata, T. Namba, R. Nambu, Y. Obayashi, M. Shiozawa, Y. Suzuki, Y. Takeuchi, K. Taki, S. Yamada, M. Ishitsuka, T. Kajita, K. Kaneyuki, S. Nakayama, A. Okada, K. Okumura, C. Saji, Y. Takenaga, S. T. Clark, S. Desai, E. Kearns, S. Likhoded, J. L. Stone, L. R. Sulak, W. Wang, M. Goldhaber, D. Casper, J. P. Cravens, W. Gajewski, W. R. Kropp, D. W. Liu, S. Mine, M. B. Smy, H. W. Sobel, C. W. Sterner, M. R. Vagins, K. S. Ganezer, J. Hill, W. E. Keig, J. S. Jang, J. Y. Kim, I. T. Lim, K. Scholberg, C. W. Walter, R. W. Ellsworth, S. Tasaka, G. Guillian, A. Kibayashi, J. G. Learned, S. Matsuno, D. Takemori, M. D. Messier, Y. Hayato, A. K. Ichikawa, T. Ishida, T. Ishii, T. Iwashita, T. Kobayashi, T. Maruyama, K. Nakamura, K. Nitta, Y. Oyama, M. Sakuda, Y. Totsuka, M. Hasegawa, K. Hayashi, I. Kato, H. Maesaka, T. Morita, K. Nishikawa, T. Sasaki, S. Ueda, S. Yamamoto, T. J. Haines, S. Dazeley, S. Hatakeyama, R. Svoboda, E. Blaufuss, J. A. Goodman, G. W. Sullivan, D. Turcan, A. Habig, Y. Fukuda, C. K. Jung, M. Malek, C. Mauger, C. McGrew, A. Sarrat, E. Sharkey, C. Yanagisawa, T. Toshito, K. Miyano, N. Tamura, Y. Kuno, M. Yoshida, S. B. Kim, J. Yoo, H. Okazawa, T. Ishizuka, Y. Choi, H. K. Seo, Y. Gando, K. Inoue, J. Shirai, M. Koshiba, Y. Nakajima, K. Nishijima, T. Harada, H. Ishino, Y. Watanabe, D. Kielczewska, J. Zalipska, H. G. Berns, R. Gran, K. K. Shiraishi, A. Stachyra, K. Washburn, R. J. Wilkes

Physical Review D 71 ( 11 ) 2005年

掲載種別：研究論文（学術雑誌）

We present a combined analysis of fully-contained, partially-contained and upward-going muon atmospheric neutrino data from a 1489d exposure of the Super-Kamiokande detector. The data samples span roughly five decades in neutrino energy, from 100MeV to 10eV. A detailed Monte Carlo comparison is described and presented. The data is fit to the Monte Carlo expectation, and is found to be consistent with neutrino oscillations of νμντ with sin22θ>0.92 and 1.5×10-3<Δm2<3.4×10-3eV2 at 90% confidence level. © 2005 The American Physical Society.

DOI： 10.1103/PHYSREVD.71.112005

Readout, first- and second-level triggers of the new Belle silicon vertex detector 査読

M Friedl, R Abe, T Abe, H Aihara, Y Asano, T Aso, A Bakich, T Browder, MC Chang, Y Chao, KF Chen, S Chidzik, J Dalseno, R Dowd, J Dragic, CW Everton, R Fernholz, H Fujii, ZW Gao, A Gordon, YN Guo, J Haba, K Hara, T Hara, Y Harada, T Haruyama, K Hasuko, K Hayashi, M Hazumi, EM Heenan, T Higuchi, H Hirai, N Hitomi, A Igarashi, Y Igarashi, H Ikeda, H Ishino, K Itoh, S Iwaida, J Kaneko, P Kapusta, R Karawatzki, K Kasami, H Kawai, T Kawasaki, A Kibayashi, S Koike, S Korpar, P Krizan, H Kurashiro, A Kusaka, T Lesiak, A Limosani, WC Lin, D Marlow, H Matsumoto, Y Mikami, H Miyake, GR Moloney, T Mori, T Nakadaira, Y Nakano, Z Natkaniec, S Nozaki, R Ohkubo, F Ohno, S Okuno, Y Onuki, W Ostrowicz, H Ozaki, L Peak, M Pernicka, M Rosen, M Rozanska, N Sato, S Schmid, T Shibata, R Stamen, S Stanic, H Steininger, K Sumisawa, J Suzuki, H Tajima, O Tajima, K Takahashi, F Takasaki, N Tamura, M Tanaka, GN Taylor, H Terazaki, T Tomura, K Trabelsi, W Trischuk, T Tsuboyama, K Uchida, K Ueno, K Ueno, N Uozaki, Y Ushiroda, S Vahsen, G Varner, K Varvell, YS Velikzhanin, CC Wang, MZ Wang, M Watanabe, Y Watanabe, Y Yamada, H Yamamoto, Y Yamashita, Y Yamashita, M Yamauchi, H Yanai, R Yang, Y Yasu, M Yokoyama, T Ziegler, D Zontar

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT 535 ( 1-2 ) 491 - 496 2004年12月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：ELSEVIER SCIENCE BV

A major upgrade of the Silicon Vertex Detector (SVD 2.0) of the Belle experiment at the KEKB factory was installed along with new front-end and back-end electronics systems during the summer shutdown period in 2003 to cope with higher particle rates, improve the track resolution and meet the increasing requirements of radiation tolerance.
The SVD 2.0 detector modules are read out by VA1TA chips which provide "fast or" (hit) signals that are combined by the back-end FADCTF modules to coarse, but immediate level 0 track trigger signals at rates of several tens of a kHz. Moreover, the digitized detector signals are compared to threshold lookup tables in the FADCTFs to pass on hit information on a single strip basis to the subsequent level 1.5 trigger system, which reduces the rate below the kHz range. Both FADCTF and level 1.5 electronics make use of parallel real-time processing in Field Programmable Gate Arrays (FPGAs), while further data acquisition and event building is done by PC farms running Linux.
The new readout system hardware is described and the first results obtained with cosmics are shown. (C) 2004 Elsevier B.V. All rights reserved.

DOI： 10.1016/j.nima.2004.07.178

BELLE/SVD2 status and performance 査読

R Abe, T Abe, H Aihara, Y Asano, T Aso, A Bakich, T Browder, MC Chang, Y Chao, KF Chen, S Chidzik, J Dalseno, R Dowd, J Dragic, CW Everton, R Fernholz, M Friedl, H Fujii, ZW Gao, A Gordon, YN Guo, J Haba, K Hara, T Hara, Y Harada, T Haruyama, K Hasuko, K Hayashi, M Hazumi, EM Heenan, T Higuchi, H Hirai, N Hitomi, A Igarashi, Y Igarashi, H Ikeda, H Ishino, K Itoh, S Iwaida, J Kaneko, P Kapusta, R Karawatzki, K Kasami, H Kawai, T Kawasaki, A Kibayashi, S Koike, S Korpar, P Krizan, H Kurashiro, A Kusaka, T Lesiak, A Limosani, WC Lin, D Marlow, H Matsumoto, Y Mikami, H Miyake, GR Moloney, T Mori, T Nakadaira, Y Nakano, Z Natkaniec, S Nozaki, R Ohkubo, F Ohno, S Okuno, Y Onuki, W Ostrowicz, H Ozaki, L Peak, M Pernicka, M Rosen, M Rozanska, N Sato, S Schmid, T Shibata, R Stamen, S Stanic, H Steininger, K Sumisawa, J Suzuki, H Tajima, O Tajima, K Takahashi, F Takasaki, N Tamura, M Tanaka, GN Taylor, H Terazaki, T Tomura, K Trabelsi, W Trischuk, T Tsuboyama, K Uchida, K Ueno, K Ueno, N Uozaki, Y Ushiroda, S Vahsen, G Varner, K Varvell, YS Velikzhanin, CC Wang, MZ Wang, M Watanabe, Y Watanabe, Y Yamada, H Yamamoto, Y Yamashita, Y Yamashita, M Yamauchi, H Yanai, R Yang, Y Yasu, M Yokoyama, T Ziegler, D Zontar

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT 535 ( 1-2 ) 379 - 383 2004年12月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：ELSEVIER SCIENCE BV

A new silicon vertex detector for the BELLE experiment was installed and its operation has started successfully at the high-luminosity asymmetric energy e(+)e(-) collider KEKB in October 2003. This vertex detector provides a larger polar angle acceptance, a more precise vertex resolution and a better radiation tolerance than the previous one. The obtained performances indicate that the SVD2 works reliably as expected. Moreover, a prospective simulation study shows that the SVD2 should work under the coming higher background conditions. (C) 2004 Published by Elsevier B.V.

DOI： 10.1016/j.nima.2004.07.156

Study of time-dependent CP violation in B-0 -> J/psi pi(0) decays 査読

SU Kataoka, K Abe, K Abe, Adachi, I, H Aihara, M Akatsu, Y Asano, T Aushev, S Bahinipati, AM Bakich, A Bay, Bedny, I, U Bitenc, Bizjak, I, A Bondar, M Bracko, Y Chao, A Chen, WT Chen, BG Cheon, R Chistov, Y Choi, M Danilov, M Dash, LY Dong, J Dragic, S Eidelman, Eiges, V, Y Enari, F Fang, S Fratina, N Gabyshev, A Garmash, T Gershon, A Go, G Gokhroo, B Golob, J Haba, K Hara, NC Hastings, K Hayasaka, H Hayashii, M Hazumi, T Higuchi, L Hinz, T Hokuue, Y Hoshi, S Hou, WS Hou, YB Hsiung, T Iijima, A Imoto, K Inami, A Ishikawa, H Ishino, R Itoh, M Iwasaki, Y Iwasaki, JH Kang, JS Kang, P Kapusta, N Katayama, H Kawai, T Kawasaki, HR Khan, HJ Kim, K Kinoshita, P Koppenburg, S Korpar, P Krizan, P Krokovny, CC Kuo, A Kuzmin, YJ Kwon, JS Lange, G Leder, SE Lee, SH Lee, T Lesiak, J Li, SW Lin, J MacNaughton, F Mandl, T Matsumoto, W Mitaroff, K Miyabayashi, H Miyake, H Miyata, D Mohapatra, T Mori, T Nagamine, Y Nagasaka, E Nakano, H Nakazawa, Z Natkaniec, S Nishida, O Nitoh, S Noguchi, S Ogawa, T Ohshima, T Okabe, S Okuno, SL Olsen, Y Onuki, W Ostrowicz, H Ozaki, P Pakhlov, H Palka, H Park, LS Peak, LE Piilonen, FJ Ronga, M Rozanska, H Sagawa, Y Sakai, N Sato, T Schietinger, O Schneider, J Schumann, AJ Schwartz, S Semenov, K Senyo, ME Sevior, T Shibata, H Shibuya, JB Singh, A Somov, N Soni, R Stamen, M Staric, K Sumisawa, T Sumiyoshi, O Tajima, F Takasaki, N Tamura, M Tanaka, GN Taylor, Y Teramoto, K Trabelsi, T Tsukamoto, K Ueno, S Uno, G Varner, S Villa, CC Wang, CH Wang, M Watanabe, BD Yabsley, A Yamaguchi, Y Yamashita, H Yang, J Ying, Y Yuan, SL Zang, CC Zhang, J Zhang, LM Zhang, ZP Zhang, Zhilich, V, T Ziegler, D Zontar

PHYSICAL REVIEW LETTERS 93 ( 26 ) 1 - 6 2004年12月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：AMER PHYSICAL SOC

We report a measurement of CP asymmetry parameters in the decay B-0((B) over bar (0))-->J/psipi(0), which is governed by the b-->c(c) over bar d transition. The analysis is based on a 140 fb(-1) data sample accumulated at the Y(4S) resonance by the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. One neutral B meson in the J/psipi(0) final state is fully reconstructed for events used in this analysis. The accompanying B meson flavor is identified by its decay products. From the distribution of proper-time intervals between the two B decays, we obtain the following CP-violating parameters: S-J/psipi(0)=-0.72+/-0.42(stat)+/-0.09(syst) and A(J/psipi)(0)=-0.01+/-0.29(stat)+/-0.03(syst).

DOI： 10.1103/PhysRevLett.93.261801

The new beampipe for the Belle experiment 査読

R Abe, T Abe, H Aihara, Y Asano, T Aso, A Bakich, T Browder, MC Chang, Y Chao, KF Chen, S Chidzik, J Dalseno, R Dowd, J Dragic, CW Everton, R Fernholz, M Friedl, H Fujii, ZW Gao, A Gordon, YN Guo, J Haba, K Hara, T Hara, Y Harada, T Haruyama, K Hasuko, K Hayashi, M Hazumi, EM Heenan, T Higuchi, H Hirai, N Hitomi, A Igarashi, Y Igarashi, H Ikeda, H Ishino, K Itoh, S Iwaida, J Kaneko, P Kapusta, R Karawatzki, K Kasami, H Kawai, T Kawasaki, A Kibayashi, S Koike, S Korpar, P Krizan, H Kurashiro, A Kusaka, T Lesiak, A Limosani, WC Lin, D Marlow, H Matsumoto, Y Mikami, H Miyake, GR Moloney, T Mori, T Nakadaira, Y Nakano, Z Natkaniec, S Nozaki, R Ohkubo, F Ohno, S Okuno, Y Onuki, W Ostrowicz, H Ozaki, L Peak, M Pernicka, M Rosen, M Rozanska, N Sato, S Schmid, T Shibata, R Stamen, S Stanic, H Steininger, K Sumisawa, J Suzuki, H Tajima, O Tajima, K Takahashi, F Takasaki, N Tamura, M Tanaka, GN Taylor, H Terazaki, T Tomura, K Trabelsi, W Trischuk, T Tsuboyama, K Uchida, K Ueno, K Ueno, N Uozaki, Y Ushiroda, S Vahsen, G Varner, K Varvell, YS Velikzhanin, CC Wang, MZ Wang, M Watanabe, Y Watanabe, Y Yamada, H Yamamoto, Y Yamashita, Y Yamashita, M Yamauchi, H Yanai, R Yang, Y Yasu, M Yokoyama, T Ziegler, D Zontar

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT 535 ( 1-2 ) 558 - 561 2004年12月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：ELSEVIER SCIENCE BV

We have upgraded the beampipe and the silicon vertex tracker of the Belle detector for increased luminosity and to achieve better vertex resolution. The radius of the beampipe was reduced from 2 to 1.5 cm to achieve better vertex resolution. In order to reduce the beam background that could accompany the reduction of the beampipe radius, a massive mask made of tantalum and tungsten was placed on each side of the central section. The total weight of them is 40 kg. The maximum radiation dose of the silicon tracker is measured about 80 krad/yr. This is lower than the dose of 100 krad per year with the previous beampipe even though the beampipe radius is smaller. The beampipe is designed to minimize heating, and enough cooling power is provided by the liquid cooling. (C) 2004 Elsevier B.V. All rights reserved.

DOI： 10.1016/j.nima.2004.07.260

Search for CP violation in the decay B-0 ->(DD -/+)-D-*+/- 査読

T Aushev, Y Iwasaki, K Abe, K Abe, Adachi, I, H Aihara, M Akatsu, Y Asano, T Aziz, S Bahinipati, AM Bakich, A Bay, Bedny, I, U Bitenc, Bizjak, I, S Blyth, A Bondar, A Bozek, M Bracko, J Brodzicka, P Chang, Y Chao, A Chen, WT Chen, BG Cheon, R Chistov, Y Choi, A Chuvikov, M Danilov, M Dash, LY Dong, J Dragic, A Drutskoy, S Eidelman, Eiges, V, Y Enari, F Fang, S Fratina, N Gabyshev, A Garmash, T Gershon, G Gokhroo, B Golob, NC Hastings, K Hayasaka, M Hazumi, T Higuchi, L Hinz, T Hokuue, Y Hoshi, S Hou, WS Hou, T Iijima, A Imoto, K Inami, A Ishikawa, H Ishino, R Itoh, M Iwasaki, JH Kang, JS Kang, SU Kataoka, N Katayama, H Kawai, T Kawasaki, HR Khan, HJ Kim, SK Kim, K Kinoshita, P Koppenburg, S Korpar, P Krizan, P Krokovny, CC Kuo, A Kuzmin, YJ Kwon, JS Lange, G Leder, SH Lee, T Lesiak, J Li, SW Lin, D Liventsev, J MacNaughton, F Mandl, T Matsumoto, W Mitaroff, K Miyabayashi, H Miyake, H Miyata, R Mizuk, D Mohapatra, T Mori, T Nagamine, Y Nagasaka, E Nakano, M Nakao, H Nakazawa, Z Natkaniec, S Nishida, O Nitoh, S Ogawa, T Ohshima, T Okabe, S Okuno, SL Olsen, W Ostrowicz, H Ozaki, P Pakhlov, H Palka, H Park, LS Peak, LE Piilonen, H Sagawa, Y Sakai, N Sato, T Schietinger, O Schneider, J Schumann, AJ Schwartz, S Semenov, K Senyo, ME Sevior, H Shibuya, A Somov, N Soni, R Stamen, M Staric, K Sumisawa, T Sumiyoshi, O Tajima, F Takasaki, N Tamura, M Tanaka, GN Taylor, Y Teramoto, K Trabelsi, T Tsukamoto, S Uehara, T Uglov, K Ueno, S Uno, G Varner, KE Varvell, S Villa, CC Wang, CH Wang, BD Yabsley, A Yamaguchi, Y Yamashita, J Ying, Y Yuan, SL Zang, J Zhang, LM Zhang, ZP Zhang, Zhilich, V, D Zontar

PHYSICAL REVIEW LETTERS 93 ( 20 ) 1 - 6 2004年11月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：AMER PHYSICAL SOC

We report a search for CP-violating asymmetry in B-0-->D*+/-D-/+ decays. The analysis employs two methods of B-0 reconstruction: full and partial. In the full reconstruction method all daughter particles of the B-0 are required to be detected; the partial reconstruction technique requires a fully reconstructed D- and only a slow pion from the D*+-->D(0)pi(slow)(+) decay. From a fit to the distribution of the time interval corresponding to the distance between two B meson decay points we calculate the CP-violating parameters and find the significance of nonzero CP asymmetry to be 2.7 standard deviations.

DOI： 10.1103/PhysRevLett.93.201802

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