Measurement of the tau Michel parameters (eta)over-bar and xi kappa in the radiative leptonic decay tau(-) -> l(-)nu(tau)(nu)over-bar(l)gamma
文献类型：期刊论文
| 作者 | Schw; Yuan ZZ(苑长征) ; 王平(实); Li LK(李龙科); Zupanc, A; Zhulanov, V; Zhukova, V; Zhilich, V; Zhang, ZP; Yuan, CZ
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| 刊名 | PROGRESS OF THEORETICAL AND EXPERIMENTAL PHYSICS
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| 出版日期 | 2018 |
| 期号 | 2页码:023C01 |
| ISSN号 | 2050-3911 |
| DOI | 10.1093/ptep/pty003 |
| 文献子类 | Article |
| 英文摘要 | We present a measurement of the Michel parameters of the tau lepton, (eta) over bar and xi kappa, in the radiative leptonic decay tau(-) -> l(-)nu(tau)(nu) over bar (l)gamma using 711 fb(-1) of collision data collected with the Belle detector at the KEKB e(+)e(-) collider. The Michel parameters are measured in an unbinned maximum likelihood fit to the kinematic distribution of e(+)e(-) -> tau(+)tau(-) -> (pi(+)pi(0)(nu) over bar (tau))(l(-)nu(tau)(nu) over bar (l)gamma) (l = e or mu). The measured values of the Michel parameters are (eta) over bar = - 1.3 +/- 1.5 +/- 0.8 and xi kappa = 0.5 +/- 0.4 +/- 0.2, where the first error is statistical and the second is systematic. This is the first measurement of these parameters. These results are consistent with the Standard Model predictions within their uncertainties, and constrain the coupling constants of the generalized weak interaction. |
| WOS关键词 | MU-MESON DECAY ; BELLE DETECTOR ; IDENTIFICATION ; ANNIHILATION ; LIBRARY ; TRIGGER ; KEKB |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000427011100011 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/285716]  |
| 专题 | 高能物理研究所_实验物理中心 |
| 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 | Schw,Yuan ZZ,Wang P,et al. Measurement of the tau Michel parameters (eta)over-bar and xi kappa in the radiative leptonic decay tau(-) -> l(-)nu(tau)(nu)over-bar(l)gamma[J]. PROGRESS OF THEORETICAL AND EXPERIMENTAL PHYSICS,2018(2):023C01. |
| APA | Schw.,苑长征.,王平.,李龙科.,Zupanc, A.,...&Shimizu, N.(2018).Measurement of the tau Michel parameters (eta)over-bar and xi kappa in the radiative leptonic decay tau(-) -> l(-)nu(tau)(nu)over-bar(l)gamma.PROGRESS OF THEORETICAL AND EXPERIMENTAL PHYSICS(2),023C01. |
| MLA | Schw,et al."Measurement of the tau Michel parameters (eta)over-bar and xi kappa in the radiative leptonic decay tau(-) -> l(-)nu(tau)(nu)over-bar(l)gamma".PROGRESS OF THEORETICAL AND EXPERIMENTAL PHYSICS .2(2018):023C01. |
入库方式： OAI收割
来源：高能物理研究所
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