The first search for the Formula Presented boson decay to Formula Presented 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 Formula Presented. 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 Formula Presented to Formula Presented 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.

Hayrapetyan, A., Tumasyan, A., Adam, W., Andrejkovic, J., Bergauer, T., Chatterjee, S., et al. (2024). Search for the Z Boson Decay to ττμμ in Proton-Proton Collisions at √s p = 13 TeV. PHYSICAL REVIEW LETTERS, 133(16) [10.1103/PhysRevLett.133.161805].

Search for the Z Boson Decay to ττμμ in Proton-Proton Collisions at √s p = 13 TeV

Xiao J.;Boldrini G.;Brivio F.;Cetorelli F.;De Guio F.;Dinardo M. E.;Gerosa R.;Ghezzi A.;Govoni P.;Guzzi L.;Lucchini M. T.;Paganoni M.;Palluotto S.;Perego A.;Pinolini B. S.;Pizzati G.;Ragazzi S.;Tabarelli de Fatis T.;Zuolo D.;
2024

Abstract

The first search for the Formula Presented boson decay to Formula Presented 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 Formula Presented. 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 Formula Presented to Formula Presented 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.
Articolo in rivista - Articolo scientifico
Colliding beam accelerators; Negative ions; Photons; Positive ions; Protons
English
18-ott-2024
2024
133
16
161805
none
Hayrapetyan, A., Tumasyan, A., Adam, W., Andrejkovic, J., Bergauer, T., Chatterjee, S., et al. (2024). Search for the Z Boson Decay to ττμμ in Proton-Proton Collisions at √s p = 13 TeV. PHYSICAL REVIEW LETTERS, 133(16) [10.1103/PhysRevLett.133.161805].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/577102
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