Time-dependent CP asymmetries in B0→Ks0π0γ transitions

被引：60

作者：

Ushiroda, Y. ^{[1
]}

Sumisawa, 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.

引用

页数：6

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