Observation of B+-> K-1(1270)(+)gamma

	Observation of B+-> K-1(1270)(+)gamma
	Yang, HY; Nakao, M; Abe, K; Abe, K; Aihara, H; Asano, Y; Aushev, T; Bahinipati, S; Bakich, AM; Ban, Y
刊名	PHYSICAL REVIEW LETTERS
	2005
卷号	94 期号:11 页码:111802
通讯作者	Budker Inst Nucl Phys, Novosibirsk 630090, Russia ; Chiba Univ, Chiba, Japan ; Chonnam Natl Univ, Kwangju, South Korea ; Univ Cincinnati, Cincinnati, OH 45221 USA ; Univ Frankfurt, D-6000 Frankfurt, Germany ; Gyeongsang Natl Univ, Chinju, South Korea ; Univ Hawaii, Honolulu, HI 96822 USA ; KEK, High Energy Accelerator Res Org, Tsukuba, Ibaraki, Japan ; Hiroshima Inst Technol, Hiroshima, Japan ; Chinese Acad Sci, Inst High Energy Phys, Beijing, Peoples R China ; Inst High Energy Phys, Vienna, Austria ; Inst Theoret & Expt Phys, Moscow 117259, Russia ; Jozef Stefan Inst, Ljubljana, Slovenia ; Kanagawa Univ, Yokohama, Kanagawa, Japan ; Korea Univ, Seoul 136701, South Korea ; Kyungpook Natl Univ, Taegu 702701, South Korea ; Ecole Polytech Fed Lausanne, Swiss Fed Inst Technol, CH-1015 Lausanne, Switzerland ; Univ Ljubljana, Ljubljana, Slovenia ; Univ Maribor, SLO-2000 Maribor, Slovenia ; Univ Melbourne, Melbourne, Vic, Australia ; Nagoya Univ, Nagoya, Aichi, Japan ; Nara Womens Univ, Nara 630, Japan ; Natl Cent Univ, Chungli 32054, Taiwan ; Natl United Univ, Miaoli, Taiwan ; Natl Taiwan Univ, Dept Phys, Taipei 10764, Taiwan ; H Niewodniczanski Inst Nucl Phys, PL-31342 Krakow, Poland ; Nihon Dent Coll, Niigata, Japan ; Niigata Univ, Niigata, Japan ; Osaka City Univ, Osaka 558, Japan ; Osaka Univ, Osaka, Japan ; Panjab Univ, Chandigarh 160014, India ; Peking Univ, Beijing 100871, Peoples R China ; Princeton Univ, Princeton, NJ 08545 USA ; Saga Univ, Saga 840, Japan ; Univ Sci & Technol China, Hefei 230026, Peoples R China ; Seoul Natl Univ, Seoul, South Korea ; Sungkyunkwan Univ, Suwon, South Korea ; Univ Sydney, Sydney, NSW 2006, Australia ; Tata Inst Fundamental Res, Bombay 400005, Maharashtra, India ; Toho Univ, Funabashi, Chiba 274, Japan ; Tohoku Gakuin Univ, Tagajo, Miyagi, Japan ; Tohoku Univ, Sendai, Miyagi 980, Japan ; Univ Tokyo, Dept Phys, Tokyo 113, Japan ; Tokyo Inst Technol, Tokyo 152, Japan ; Tokyo Metropolitan Univ, Tokyo 158, Japan ; Tokyo Univ Agr & Technol, Tokyo, Japan ; Univ Tsukuba, Tsukuba, Ibaraki 305, Japan ; Virginia Polytech Inst & State Univ, Blacksburg, VA 24061 USA ; Yonsei Univ, Seoul 120749, South Korea
英文摘要	We report the observation of the radiative decay B+-> K-1(1270)(+)gamma using a data sample of 140 fb(-1) taken at the Upsilon(4S) resonance with the Belle detector at the KEKB e(+)e(-) collider. We find the branching fraction to be B(B+-> K-1(1270)(+)gamma)=(4.3 +/- 0.9(stat.)+/- 0.9(syst.))x10(-5) with a significance of 7.3 sigma. We find no significant signal for B+-> K-1(1400)(+)gamma and set an upper limit B(B+-> K-1(1400)(+)gamma)< 1.5x10(-5) at the 90% confidence level. We also measure inclusive branching fractions for B+-> K(+)pi(+)pi(-)gamma and B-0-> K(0)pi(+)pi(-)gamma in the mass range 1 GeV/c(2)< M(K)(+(0))pi(+)pi(-)< 2 GeV/c(2).
学科主题	Physics
类目[WOS]	Physics, Multidisciplinary
研究领域[WOS]	Physics
原文出处	SCI
语种	英语
WOS记录号	WOS:000227923200017
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/240923]
专题	高能物理研究所_实验物理中心中国科学院高能物理研究所_国有资产处中国科学院高能物理研究所_中国散裂中子源
作者单位	中国科学院高能物理研究所
推荐引用方式 GB/T 7714	Yang, HY,Nakao, M,Abe, K,et al. Observation of B+-> K-1(1270)(+)gamma[J]. PHYSICAL REVIEW LETTERS,2005,94(11):111802.
APA	Yang, HY.,Nakao, M.,Abe, K.,Abe, K.,Aihara, H.,...&Zurcher, D.(2005).Observation of B+-> K-1(1270)(+)gamma.PHYSICAL REVIEW LETTERS,94(11),111802.
MLA	Yang, HY,et al."Observation of B+-> K-1(1270)(+)gamma".PHYSICAL REVIEW LETTERS 94.11(2005):111802.