Measurement of charmless B decays to ηK* and ηρ

被引：10

作者：

Wang, C. H. ^{[1
]}

Abe, K.

Adachi, I.

Aihara, H.

Anipko, D.

Aushev, T.

Bakich, A. M.

Barberio, E.

Bay, A.

Belous, K.

Bitenc, U.

Blyth, S.

Bondar, A.

Bozek, A.

Bracko, M.

Chang, P.

Chao, Y.

Chen, A.

Chen, W. T.

Cheon, B. G.

Chistov, R.

Choi, Y.

Choi, Y. K.

Cole, S.

Dalseno, J.

Drutskoy, A.

Eidelman, S.

Fratina, S.

Gabyshev, N.

Garmash, A.

Gershon, T.

Gokhroo, G.

Golob, B.

Ha, H.

Haba, J.

Hara, T.

Hayasaka, K.

Hazumi, M.

Heffernan, D.

Hokuue, T.

Hoshi, Y.

Hou, W.-S.

Iijima, T.

Ikado, K.

Imoto, A.

Inami, K.

Ishikawa, A.

Ishino, H.

Itoh, R.

Iwasaki, M.

机构：

[1] Natl Cent Univ, Miaoli, Taiwan

[2] Budker Inst Nucl Phys, Novosibirsk 630090, Russia

[3] Chiba Univ, Chiba, Japan

[4] Univ Cincinnati, Cincinnati, OH 45221 USA

[5] Fu Jen Catholic Univ, Dept Phys, Taipei, Taiwan

[6] Univ Giessen, D-35390 Giessen, Germany

[7] Grad Univ Adv Studies, Hayama, Japan

[8] Gyeongsang Natl Univ, Chinju, South Korea

[9] Hanyang Univ, Seoul 133791, South Korea

[10] Univ Hawaii, Honolulu, HI 96822 USA

[11] Natl Lab High Energy Phys, High Energy Accelerator Res Org, Tsukuba, Ibaraki 305, Japan

[12] Hiroshima Inst Technol, Hiroshima, Japan

[13] Univ Illinois, Urbana, IL 61801 USA

[14] Chinese Acad Sci, Inst High Energy Phys, Beijing 100864, Peoples R China

[15] Inst High Energy Phys, Vienna, Austria

[16] Inst High Energy Phys, Protvino, Russia

[17] Inst Theoret & Expt Phys, Moscow 117259, Russia

[18] J Stefan Inst, Ljubljana, Slovenia

[19] Kanagawa Univ, Yokohama, Kanagawa, Japan

[20] Korea Univ, Seoul 136701, South Korea

[21] Kyoto Univ, Kyoto, Japan

[22] Kyungpook Natl Univ, Taegu 702701, South Korea

[23] Ecole Polytech Fed Lausanne, Swiss Fed Inst Technol, Lausanne, Switzerland

[24] Univ Ljubljana, Ljubljana 61000, Slovenia

[25] Univ Maribor, SLO-2000 Maribor, Slovenia

[26] Univ Melbourne, Parkville, Vic 3052, Australia

[27] Nagoya Univ, Nagoya, Aichi, Japan

[28] Nara Womens Univ, Nara 630, Japan

[29] Natl Cent Univ, Chungli 32054, Taiwan

[30] Natl Taiwan Univ, Dept Phys, Taipei 10764, Taiwan

[31] H Niewodniczanski Inst Nucl Phys, PL-31342 Krakow, Poland

[32] Nippon Dent Univ, Niigata, Japan

[33] Niigata Univ, Niigata 95021, Japan

[34] Univ Nova Gorica, Nova Gorica, Italy

[35] Osaka City Univ, Osaka 558, Japan

[36] Osaka Univ, Osaka, Japan

[37] Panjab Univ, Chandigarh 160014, India

[38] Peking Univ, Beijing 100871, Peoples R China

[39] Univ Pittsburgh, Pittsburgh, PA 15260 USA

[40] Princeton Univ, Princeton, NJ 08544 USA

[41] RIKEN, BNL Res Ctr, Upton, NY 11973 USA

[42] Saga Univ, Saga 840, Japan

[43] Univ Sci & Technol China, Hefei 230026, Peoples R China

[44] Seoul Natl Univ, Seoul 151, South Korea

[45] Shinshu Univ, Nagano, Japan

[46] Sungkyunkwan Univ, Suwon 440746, South Korea

[47] Univ Sydney, Sydney, NSW 2006, Australia

[48] Tata Inst Fundamental Res, Bombay 400005, Maharashtra, India

[49] Toho Univ, Funabashi, Chiba 274, Japan

[50] Tohoku Gakuin Univ, Tagajo, Miyagi 985, Japan

来源：

PHYSICAL REVIEW D | 2007年 / 75卷 / 09期

关键词：

D O I：

10.1103/PhysRevD.75.092005

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We report measurements of branching fractions and CP asymmetries for B ->eta K-* and B ->eta rho decays. These results are obtained from a 414 fb(-1) data sample collected at the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. We measure the following branching fractions: B(B-0 ->eta K-*0)=(15.2 +/- 1.2 +/- 1.0)x10(-6) and B(B+->eta K*+)=(19.3(-1.9)(+2.0)+/- 1.5)x10(-6), where the first error is statistical and the second systematic. We also find a 2.7 sigma excess in the B+->eta rho(+) mode and measure B(B+->eta rho(+))=(4.1(-1.3)(+1.4)+/- 0.4)x10(-6)< 6.5x10(-6) at 90% confidence level. For B-0 ->eta rho(0) decays, we determine the upper limit B(B-0 ->eta rho(0))< 1.9x10(-6) at 90% confidence level. The partial rate asymmetries are A(CP)(eta K-*0)=0.17 +/- 0.08 +/- 0.01, A(CP)(eta K*+)=0.03 +/- 0.10 +/- 0.01, and A(CP)(eta rho(+))=-0.04(-0.32)(+0.34)+/- 0.01.

引用

页数：10

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