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Measurement of the forward-backward asymmetry in e(+)e(-)->b(b)over-bar and the b-quark branching ratio to muons at TRISTAN using neural networks
Ueno, K; Kanda, S; Olsen, SL; Kirk, P; Wang, TJ; Abashian, A; Gotow, K; Piilonen, L; Choi, SK; Rosenfeld, C; Zheng, LY; Ko, W; Breedon, RE; Lander, RL; Rowe, J; Abe, K; Fujii, Y; Igarashi, S; Kurihara, Y; Lee, MH; Liu, F; Maki, A; Nozaki, T; Omori, T; Sagawa, H; Sakai, Y; Sasaki, T; Sugimoto, Y; Takaiwa, Y; Terada, S; Kajino, F; Aso, T; Miyano, K; Miyata, H; Nakajima, N; Ohkubo, K; Sato, M; Shirai, M; Takashimizu, N; Yamashita, Y; Schnetzer, S; Behari, S; Fujimoto, H; Kobayashi, S; Murakami, A; Yang, M; Sahu, SK; Kang, JS; Kim, DY; Myung, SS; Ahn, HS; Kim, SK; Matsumoto, S
1996
发表期刊PHYSICS LETTERS B
卷号381期号:1-3页码:365-371
通讯作者LOUISIANA STATE UNIV,BATON ROUGE,LA 70803 ; INST HIGH ENERGY PHYS,BEIJING 100039,PEOPLES R CHINA ; VIRGINIA POLYTECH INST & STATE UNIV,BLACKSBURG,VA 24061 ; GYEONGSANG NATL UNIV,CHINJU 660701,SOUTH KOREA ; UNIV S CAROLINA,COLUMBIA,SC 29208 ; UNIV CALIF DAVIS,DAVIS,CA 95616 ; KEK NAT LAB HIGH ENERGY PHYS,IBARAKI 305,OSAKA,JAPAN ; KONAN UNIV,KOBE 658,JAPAN ; NIIGATA UNIV,NIIGATA 95021,JAPAN ; NIHON DENT COLL,NIIGATA 951,JAPAN ; RUTGERS STATE UNIV,PISCATAWAY,NJ 08854 ; SAGA UNIV,SAGA 840,JAPAN ; NATL TAIWAN UNIV,TAIPEI 10764,TAIWAN ; KOREA UNIV,SEOUL 136701,SOUTH KOREA ; SEOUL NATL UNIV,SEOUL 151742,SOUTH KOREA ; CHUO UNIV,TOKYO 112,JAPAN
文章类型Article
摘要The forward-backward asymmetry in e(+)e(-) --> b (b) over bar at root s = 57.9 GeV and the b-quark branching ratio to muons have been measured using neural networks. Unlike previous methods for measuring the b (b) over bar forward-backward asymmetry where the estimated background from c-quark decays and other sources are subtracted, here events are categorized as either b (b) over bar or non-b (b) over bar events by neural networks based on event-by-event characteristics. The determined asymmetry is -0.429 +/- 0.044(stat) +/- 0.047(sys) and is consistent with the prediction of the standard model. The measured B (B) over bar mixing parameter is 0.136 +/- 0.037(stat) +/- 0.040(sys) +/- 0.002(model) and the measured b-quark branching ratio to muons is 0.122 +/- 0.006(stat) +/- 0.007(sys).
学科领域Physics
研究领域[WOS]Physics ; Physics
DOI10.1016/0370-2693(96)00543-6
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语种英语
研究领域[WOS]Physics ; Physics
WOS类目Physics, Multidisciplinary
WOS记录号WOS:A1996UY50000055
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被引频次:3[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/237182
专题计算中心
作者单位中国科学院高能物理研究所
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Ueno, K,Kanda, S,Olsen, SL,et al. Measurement of the forward-backward asymmetry in e(+)e(-)->b(b)over-bar and the b-quark branching ratio to muons at TRISTAN using neural networks[J]. PHYSICS LETTERS B,1996,381(1-3):365-371.
APA Ueno, K.,Kanda, S.,Olsen, SL.,Kirk, P.,Wang, TJ.,...&Matsumoto, S.(1996).Measurement of the forward-backward asymmetry in e(+)e(-)->b(b)over-bar and the b-quark branching ratio to muons at TRISTAN using neural networks.PHYSICS LETTERS B,381(1-3),365-371.
MLA Ueno, K,et al."Measurement of the forward-backward asymmetry in e(+)e(-)->b(b)over-bar and the b-quark branching ratio to muons at TRISTAN using neural networks".PHYSICS LETTERS B 381.1-3(1996):365-371.
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