Search for lepton-flavor-violation in $Z$-boson decays with $\tau$-leptons with the ATLAS detector
文献类型：期刊论文
| ; | |
| 作者 | ATLAS Collaboration |
| 刊名 | PHYSICAL REVIEW LETTERS
 ; PHYSICAL REVIEW LETTERS
|
| 出版日期 | 2022 ; 2022 |
| 卷号 | 127页码:271801 |
| 关键词 | p p: scattering p p: scattering p p: colliding beams Z0: leptonic decay Z0: rare decay lepton: flavor: violation tau: hadronic decay ATLAS Z0: branching ratio: upper limit sensitivity CERN LHC Coll experimental results Z0 --> electron tau Z0 --> muon tau 13000 GeV-cms S044.25 S044.26 p p: colliding beams Z0: leptonic decay Z0: rare decay lepton: flavor: violation tau: hadronic decay ATLAS Z0: branching ratio: upper limit sensitivity CERN LHC Coll experimental results Z0 --> electron tau Z0 --> muon tau 13000 GeV-cms S044.25 S044.26 |
| ISSN号 | 0031-9007 ; 0031-9007 |
| DOI | 10.1103/PhysRevLett.127.271801 ; 10.1103/PhysRevLett.127.271801 |
| 文献子类 | Article ; Article |
| 英文摘要 | A search for lepton-flavor-violating $Z\to e\tau$ and $Z\to\mu\tau$ decays with $pp$ collision data recorded by the ATLAS detector at the LHC is presented. This analysis uses 139 fb$^{-1}$ of Run 2 $pp$ collisions at $\sqrt{s}=13$ TeV and is combined with the results of a similar ATLAS search in the final state in which the $\tau$-lepton decays hadronically, using the same data set as well as Run 1 data. The addition of leptonically decaying $\tau$-leptons significantly improves the sensitivity reach for $Z\to\ell\tau$ decays. The $Z\to\ell\tau$ branching fractions are constrained in this analysis to $\mathcal{B}(Z\to e\tau)<7.0\times10^{-6}$ and $\mathcal{B}(Z\to \mu\tau)<7.2\times10^{-6}$ at 95% confidence level. The combination with the previously published analyses sets the strongest constraints to date: $\mathcal{B}(Z\to e\tau)<5.0\times10^{-6}$ and $\mathcal{B}(Z\to \mu\tau)<6.5\times10^{-6}$ at 95% confidence level.; A search for lepton-flavor-violating $Z\to e\tau$ and $Z\to\mu\tau$ decays with $pp$ collision data recorded by the ATLAS detector at the LHC is presented. This analysis uses 139 fb$^{-1}$ of Run 2 $pp$ collisions at $\sqrt{s}=13$ TeV and is combined with the results of a similar ATLAS search in the final state in which the $\tau$-lepton decays hadronically, using the same data set as well as Run 1 data. The addition of leptonically decaying $\tau$-leptons significantly improves the sensitivity reach for $Z\to\ell\tau$ decays. The $Z\to\ell\tau$ branching fractions are constrained in this analysis to $\mathcal{B}(Z\to e\tau)<7.0\times10^{-6}$ and $\mathcal{B}(Z\to \mu\tau)<7.2\times10^{-6}$ at 95% confidence level. The combination with the previously published analyses sets the strongest constraints to date: $\mathcal{B}(Z\to e\tau)<5.0\times10^{-6}$ and $\mathcal{B}(Z\to \mu\tau)<6.5\times10^{-6}$ at 95% confidence level. |
| 电子版国际标准刊号 | 1079-7114 ; 1079-7114 |
| 语种 | 英语 ; 英语 |
| WOS记录号 | WOS:000754272800005 ; WOS:000754272800005 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/298793]  |
| 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 | ATLAS Collaboration. Search for lepton-flavor-violation in $Z$-boson decays with $\tau$-leptons with the ATLAS detector, Search for lepton-flavor-violation in $Z$-boson decays with $\tau$-leptons with the ATLAS detector[J]. PHYSICAL REVIEW LETTERS, PHYSICAL REVIEW LETTERS,2022, 2022,127, 127:271801, 271801. |
| APA | ATLAS Collaboration.(2022).Search for lepton-flavor-violation in $Z$-boson decays with $\tau$-leptons with the ATLAS detector.PHYSICAL REVIEW LETTERS,127,271801. |
| MLA | ATLAS Collaboration."Search for lepton-flavor-violation in $Z$-boson decays with $\tau$-leptons with the ATLAS detector".PHYSICAL REVIEW LETTERS 127(2022):271801. |
入库方式： OAI收割
来源：高能物理研究所
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