Search for new physics in the τ lepton plus missing transverse momentum final state in proton-proton collisions at √s=13 TeV
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Autor
Tumasyan, A.
Adam, W.
Andrejkovic, J. W.
Bergauer, T.
Chatterjee, S.
Damanakis, K.
Dragicevic, M.
Del Valle, A. Escalante
Hussain, P. S.
Jeitler, M.
Krammer, N.
Datum vydání
2023Publikováno v
Journal of High Energy PhysicsRočník / Číslo vydání
2023 (9)ISBN / ISSN
ISSN: 1029-8479Metadata
Zobrazit celý záznamKolekce
Tato publikace má vydavatelskou verzi s DOI 10.1007/JHEP09(2023)051
Abstrakt
A search for physics beyond the standard model (SM) in the final state with a hadronically decaying tau lepton and a neutrino is presented. This analysis is based on data recorded by the CMS experiment from proton-proton collisions at a center-of-mass energy of 13TeV at the LHC, corresponding to a total integrated luminosity of 138 fb(-1). The transverse mass spectrum is analyzed for the presence of new physics. No significant deviation from the SM prediction is observed. Limits are set on the production cross section of a W' boson decaying into a tau lepton and a neutrino. Lower limits are set on the mass of the sequential SM-like heavy charged vector boson and the mass of a quantum black hole. Upper limits are placed on the couplings of a new boson to the SM fermions. Constraints are put on a nonuniversal gauge interaction model and an effective field theory model. For the first time, upper limits on the cross section of t-channel leptoquark (LQ) exchange are presented. These limits are translated into exclusion limits on the LQ mass and on its coupling in the t-channel. The sensitivity of this analysis extends into the parameter space of LQ models that attempt to explain the anomalies observed in B meson decays. The limits presented for the various interpretations are the most stringent to date. Additionally, a model-independent limit is provided.
Klíčová slova
Beyond Standard Model, Hadron-Hadron Scattering, Tau Physics,
Trvalý odkaz
https://hdl.handle.net/20.500.14178/2350Licence
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