Compact Muon Solenoid
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| CMS-PAS-SMP-23-005 | ||
| Observation of $ \gamma\gamma\rightarrow\tau\tau $ in proton-proton collisions and limits on the anomalous electromagnetic moments of the $ \tau $ lepton | ||
| CMS Collaboration | ||
| 12 March 2024 | ||
| Abstract: The photon-induced production of a pair of $ \tau $ leptons, $ \gamma\gamma\rightarrow\tau\tau $, is observed for the first time in proton-proton collisions. The observation is based on a data set recorded with the CMS detector at the LHC at a center-of-mass energy of 13 TeV and corresponding to an integrated luminosity of 138 fb$ ^{-1} $. Events with a small number of tracks close to the di-$ \tau $ vertex are selected to isolate photon-induced processes. Limits on the anomalous electromagnetic moments of the $ \tau $ lepton originating from potential new physics effects on the $ \gamma\tau\tau $ vertex are also set. | ||
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Links:
CDS record (PDF) ;
Physics Briefing ;
CADI line (restricted) ;
These preliminary results are superseded in this paper, Accepted by ROPP. The superseded preliminary plots can be found here. |
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Compact Muon Solenoid LHC, CERN |
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