Time-dependent CP asymmetries in B0→Ks0π0γ transitions

被引：58
|
作者：
Ushiroda, Y. [1 ]
Sumisawa, K.
Abe, K.
Abe, K.
Adachi, I.
Aihara, H.
Anipko, D.
Arinstein, K.
Bakich, A. M.
Barberio, E.
Barbero, M.
Bay, A.
Bedny, I.
Belous, K.
Bitenc, U.
Bizjak, I.
Blyth, S.
Bondar, A.
Bozek, A.
Bracko, M.
Brodzicka, J.
Browder, T. E.
Chang, P.
Chao, Y.
Chen, A.
Chen, K. -F.
Chen, W. T.
Cheon, B. G.
Chistov, R.
Choi, Y.
Choi, Y. K.
Cole, S.
Dalseno, J.
Dash, M.
Eidelman, S.
Gabyshev, N.
Gershon, T.
Go, A.
Golob, B.
Ha, H.
Haba, J.
Hara, K.
Hazumi, M.
Heffernan, D.
Higuchi, T.
Hoshi, Y.
Hou, S.
Hou, W. -S.
Iijima, T.
Ikado, K.
机构：
[1] High Energy Accelerator Res Org, KEK, Tsukuba, Ibaraki, Japan
[2] Budker Inst Nucl Phys, Novosibirsk 630090, Russia
[3] Chiba Univ, Chiba, Japan
[4] Chonnam Natl Univ, Kwangju, South Korea
[5] Univ Cincinnati, Cincinnati, OH 45221 USA
[6] Grad Univ Adv Studies, Hayama, Japan
[7] Univ Hawaii, Honolulu, HI 96822 USA
[8] Univ Illinois, Urbana, IL 61801 USA
[9] Chinese Acad Sci, Inst High Energy Phys, Beijing, Peoples R China
[10] Inst High Energy Phys, Vienna, Austria
[11] Inst High Energy Phys, Protvino, Russia
[12] Inst Theoret & Expt Phys, Moscow, Russia
[13] Jozef Stefan Inst, Ljubljana, Slovenia
[14] Kanagawa Univ, Yokohama, Kanagawa, Japan
[15] Korea Univ, Seoul 136701, South Korea
[16] Kyungpook Natl Univ, Taegu 702701, South Korea
[17] Swiss Fed Inst Technol, EPFL, CH-1015 Lausanne, Switzerland
[18] Univ Maribor, SLO-2000 Maribor, Slovenia
[19] Univ Melbourne, Parkville, Vic 3052, Australia
[20] Nagoya Univ, Nagoya, Aichi, Japan
[21] Nara Womens Univ, Nara, Japan
[22] Natl Cent Univ, Chungli 32054, Taiwan
[23] Natl Taiwan Univ, Dept Phys, Taipei 10764, Taiwan
[24] H Niewodniczanski Inst Nucl Phys, Krakow, Poland
[25] Nippon Dent Univ, Niigata, Japan
[26] Niigata Univ, Niigata, Japan
[27] Osaka City Univ, Osaka 558, Japan
[28] Osaka Univ, Osaka, Japan
[29] Panjab Univ, Chandigarh, India
[30] Peking Univ, Beijing 100871, Peoples R China
[31] Princeton Univ, Princeton, NJ 08544 USA
[32] RIKEN BNL Res Ctr, Upton, NY 11973 USA
[33] Saga Univ, Saga 840, Japan
[34] Univ Sci & Technol China, Hefei 230026, Peoples R China
[35] Seoul Natl Univ, Seoul, South Korea
[36] Shinshu Univ, Nagano, Japan
[37] Sungkyunkwan Univ, Suwon, South Korea
[38] Univ Sydney, Sydney, NSW 2006, Australia
[39] Toho Univ, Funabashi, Chiba 274, Japan
[40] Tohoku Gakuin Univ, Tagajo, Miyagi, Japan
[41] Tohoku Univ, Sendai, Miyagi 980, Japan
[42] Univ Tokyo, Dept Phys, Tokyo 113, Japan
[43] Tokyo Inst Technol, Tokyo 152, Japan
[44] Tokyo Metropolitan Univ, Tokyo 158, Japan
[45] Tokyo Univ Agr & Technol, Tokyo, Japan
[46] Virginia Polytech Inst & State Univ, Blacksburg, VA 24061 USA
[47] Yonsei Univ, Seoul 120749, South Korea
[48] Univ Ljubljana, Ljubljana, Slovenia
来源：
PHYSICAL REVIEW D | 2006年 / 74卷 / 11期
关键词：
D O I：
10.1103/PhysRevD.74.111104
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We report measurements of CP violation parameters in B-0 -> K-S(0)pi(0)gamma transitions based on a data sample of 535x10(6)B (B) over bar pairs collected with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. One neutral B meson is fully reconstructed in the B-0 -> K-S(0)pi(0)gamma mode. The flavor of the accompanying B meson is identified from its decay products. We obtain time-dependent and direct CP violation parameters S and A for a K-S(0)pi(0) invariant mass up to 1.8 GeV/c(2) as S-KS(0)pi(0)gamma=-0.10 +/- 0.31 +/- 0.07 and A(KS)(0)pi(0)gamma=-0.20 +/- 0.20 +/- 0.06. For a K-S(0)pi(0) invariant mass near the K-*0(892) resonance, we obtain S-K(*0)gamma=-0.32(-0.33)(+0.36)+/- 0.05 and A(K)(*0)gamma=-0.20 +/- 0.24 +/- 0.05.
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页数：6
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