In this section
@article{Cms:2024:1361-6633/ad6fcb,
author = {Cms, Collaboration T},
doi = {1361-6633/ad6fcb},
journal = {Rep Prog Phys},
title = {Observation ofγγ→ττin proton-proton collisions and limits on the anomalous electromagnetic moments of the τ lepton.},
url = {http://dx.doi.org/10.1088/1361-6633/ad6fcb},
volume = {87},
year = {2024}
}
TY - JOUR
AB - The production of a pair of τ leptons via photon-photon fusion,γγ→ττ, is observed for the first time in proton-proton collisions, with a significance of 5.3 standard deviations. This observation is based on a data set recorded with the CMS detector at the LHC at a center-of-mass energy of 13 TeV and corresponding to an integrated luminosity of 138 fb-1. Events with a pair of τ leptons produced via photon-photon fusion are selected by requiring them to be back-to-back in the azimuthal direction and to have a minimum number of charged hadrons associated with their production vertex. The τ leptons are reconstructed in their leptonic and hadronic decay modes. The measured fiducial cross section ofγγ→ττisσobsfid=12.4-3.1+3.8fb. Constraints are set on the contributions to the anomalous magnetic moment (aτ) and electric dipole moments (dτ) of the τ lepton originating from potential effects of new physics on theγττvertex:aτ=0.0009-0.0031+0.0032and|dτ|<2.9×10-17ecm(95% confidence level), consistent with the standard model.
AU - Cms,Collaboration T
DO - 1361-6633/ad6fcb
PY - 2024///
TI - Observation ofγγ→ττin proton-proton collisions and limits on the anomalous electromagnetic moments of the τ lepton.
T2 - Rep Prog Phys
UR - http://dx.doi.org/10.1088/1361-6633/ad6fcb
UR - https://www.ncbi.nlm.nih.gov/pubmed/39146977
VL - 87
ER -