Search for the 𝑍 boson decay to 𝜏𝜏𝜇𝜇 in proton-proton collisions at √𝑠=13 TeV
File(s)
Published version
Author(s)
Type
Journal Article
Abstract
The first search for the 𝑍 boson decay to 𝜏𝜏𝜇𝜇 at the CERN LHC is presented, based on data collected by the CMS experiment at the LHC in proton-proton collisions at a center-of-mass energy of 13 TeV and corresponding to an integrated luminosity of 138 fb−1. The data are compatible with the predicted background. For the first time, an upper limit at the 95% confidence level of 6.9 times the standard model expectation is placed on the ratio of the 𝑍 →𝜏𝜏𝜇𝜇 to 𝑍 →4𝜇 branching fractions. Limits are also placed on the six flavor-conserving four-lepton effective-field-theory operators involving two muons and two tau leptons, for the first time testing all such operators.
Date Issued
2024-10-18
Date Acceptance
2024-08-14
Citation
Physical Review Letters, 2024, 133 (16)
ISSN
0031-9007
Publisher
American Physical Society (APS)
Journal / Book Title
Physical Review Letters
Volume
133
Issue
16
Copyright Statement
© 2024 CERN, for the CMS Collaboration Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3.
License URL
Identifier
https://doi.org/10.1103/physrevlett.133.161805
Publication Status
Published
Article Number
161805
Date Publish Online
2024-10-18