Impact of Λb → Λcιν measurement on new physics in b → clν transitions
文献类型：期刊论文
| 作者 | Fedele, Marco; Blanke, Monika1; Crivellin, Andreas2,3; Iguro, Syuhei1,2; Kitahara, Teppei4,5,6,7; Nierste, Ulrich; Watanabe, Ryoutaro8 |
| 刊名 | PHYSICAL REVIEW D
 |
| 出版日期 | 2023 |
| 卷号 | 107期号:5页码:55005 |
| 关键词 | LEPTON UNIVERSALITY VIOLATION MODEL LEPTOQUARKS (B)OVER-BAR |
| ISSN号 | 2470-0010 |
| DOI | 10.1103/PhysRevD.107.055005 |
| 英文摘要 | Measurements of the branching ratios of B -> D-(*)iota(nu) over bar vertical bar B -> D((*))l (nu) over bar B-c -> J vertical bar psi iota(nu) over bar vertical bar B-c -> J vertical bar psi l (nu) over bar the BABAR, Belle and LHCb collaborations consistently point towards an abundance of taus compared to channels with light leptons. However, the ratio Lambda(b) -> Lambda(c)iota(nu)over bar / Lambda(b) -> Lambda(c)l(nu)over bar shows a relative deficit in taus. In this paper, we critically address whether data still points towards a coherent pattern of deviations, in particular in light of the sum rule relating these decays in a model-independent way. We find that no common new physics explanation of all ratios is possible (within 2 sigma or 1.5 sigma, depending on the R(Lambda(c)) normalization to light lepton channels). While this inconsistency could be a statistical fluctuation, further measurements are required in order to converge to a coherent pattern of experimental results. |
| 学科主题 | Astronomy & Astrophysics ; Physics |
| 语种 | 英语 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/28002]  |
| 专题 | 理论物理研究所_理论物理所1978-2010年知识产出 |
| 作者单位 | 1.Karlsruhe Inst Technol, Inst Theoret Teilchenphys TTP, D-76131 Karlsruhe, Germany 2.Karlsruhe Inst Technol, Inst Astroteilchenphys IAP, D-76344 Eggenstein Leopoldshafen, Germany 3.Paul Scherrer Inst, CH-5232 Villigen, Switzerland 4.Univ Zurich, Phys Inst, Winterthurerstr 190, CH-8057 Zurich, Switzerland 5.Nagoya Univ, Inst Adv Res, Nagoya 4648602, Japan 6.Nagoya Univ, Kobayashi Maskawa Inst Origin Particles & Universe, Nagoya 4648602, Japan 7.KEK Theory Ctr, IPNS, KEK, Tsukuba 3050801, Japan 8.Chinese Acad Sci, Inst Theoret Phys, CAS Key Lab Theoret Phys, Beijing 100190, Peoples R China 9.INFN, Sez Pisa, Largo B Pontecorvo 3, I-56127 Pisa, Italy |
| 推荐引用方式 GB/T 7714 | Fedele, Marco,Blanke, Monika,Crivellin, Andreas,et al. Impact of Λb → Λcιν measurement on new physics in b → clν transitions[J]. PHYSICAL REVIEW D,2023,107(5):55005. |
| APA | Fedele, Marco.,Blanke, Monika.,Crivellin, Andreas.,Iguro, Syuhei.,Kitahara, Teppei.,...&Watanabe, Ryoutaro.(2023).Impact of Λb → Λcιν measurement on new physics in b → clν transitions.PHYSICAL REVIEW D,107(5),55005. |
| MLA | Fedele, Marco,et al."Impact of Λb → Λcιν measurement on new physics in b → clν transitions".PHYSICAL REVIEW D 107.5(2023):55005. |
入库方式： OAI收割
来源：理论物理研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。