IFLP   13074
INSTITUTO DE FISICA LA PLATA
Unidad Ejecutora - UE
artículos
Título:
A search for high-mass resonances decaying to τ+τ− in pp collisions at s√=8 TeV with the ATLAS detector
Autor/es:
F. MONTICELLI; ATLAS CLLABORATION
Revista:
JOURNAL OF HIGH ENERGY PHYSICS
Editorial:
SPRINGER
Referencias:
Lugar: Berlin; Año: 2015 vol. 1 p. 1 - 20
ISSN:
1126-6708
Resumen:
A search for high-mass resonances decaying into τ+ τ− final states using proton-proton collisions at s√=8 TeV produced by the Large Hadron Collider is presented. The data were recorded with the ATLAS detector and correspond to an integrated luminosity of 19.5?20.3 fb−1. No statistically significant excess above the Standard Model expectation is observed, 95% credibility upper limits are set on the cross section times branching fraction of Z′ resonances decaying into τ+ τ− pairs as a function of the resonance mass. As a result, Z′ bosons of the Sequential Standard Model with masses less than 2.02 TeV are excluded at 95% credibility. The impact of the fermionic couplings on the Z′ acceptance is investigated and limits are also placed on a Z′ model that exhibits enhanced couplings to third-generation fermions.