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
文献类型：期刊论文
| 作者 | Ueno, K; Kanda, S; Olsen, SL; Kirk, P; Wang, TJ; Abashian, A; Gotow, K; Piilonen, L; Choi, SK; Rosenfeld, C |
| 刊名 | PHYSICS LETTERS B
 |
| 出版日期 | 1996 |
| 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 |
| 英文摘要 | 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:A1996UY50000055 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/237182]  |
| 专题 | 高能物理研究所_计算中心 |
| 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 | 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. |
入库方式： OAI收割
来源：高能物理研究所
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