Search for heavy resonances decaying to tau lepton pairs in proton-proton collisions at root s=13 TeV
Data
2017-02-09
Autores
Ruiz Vargas, J. C.
Battilana, C.
Malberti, M.
Pigazzini, S.
Nardo, G. De
Thyssen, F.
Zanetti, M.
Fedi, G.
Giassi, A.
Grippo, M. T.
Título da Revista
ISSN da Revista
Título de Volume
Editor
Springer
Resumo
A search for heavy resonances that decay to tau lepton pairs is performed using proton-proton collisions at root s = 13 TeV. The data were collected with the CMS detector at the CERN LHC and correspond to an integrated luminosity of 2.2 fb(-1). The observations are in agreement with standard model predictions. An upper limit at 95% confidence level on the product of the production cross section and branching fraction into tau lepton pairs is calculated as a function of the resonance mass. For the sequential standard model, the presence of Z' bosons decaying into tau lepton pairs is excluded for Z/ masses below 2.1 TeV, extending previous limits for this final state. For the topcolor-assisted technicolor model, which predicts Z' bosons that preferentially couple to third-generation fermions, Z' masses below 1.7 TeV are excluded, representing the most stringent limit to date.
Descrição
Palavras-chave
Beyond Standard Model, Hadron-Hadron scattering (experiments), Particle and resonance production
Como citar
Journal Of High Energy Physics. New York: Springer, n. 2, 35 p., 2017.