The first search for a heavy charged vector boson in the final state with a tau lepton and a neutrino is reported, using 19.7 fb-1 of LHC data at s=8 TeV. A signal would appear as an excess of events with high transverse mass, where the standard model background is low. No excess is observed. Limits are set on a model in which the W' decays preferentially to fermions of the third generation. These results substantially extend previous constraints on this model. Masses below 2.0 to 2.7 TeV are excluded, depending on the model parameters. In addition, the existence of a W' boson with universal fermion couplings is excluded at 95% confidence level, for W' masses below 2.7 TeV. For further reinterpretation a model-independent limit on potential signals for various transverse mass thresholds is also presented.

Khachatryan, V., Sirunyan, A., Tumasyan, A., Adam, W., Asilar, E., Bergauer, T., et al. (2016). Search for W' decaying to tau lepton and neutrino in proton-proton collisions at s=8 TeV. PHYSICS LETTERS. SECTION B, 755, 196-216 [10.1016/j.physletb.2016.02.002].

Search for W' decaying to tau lepton and neutrino in proton-proton collisions at s=8 TeV

Brianza, L;Dinardo, ME;Fiorendi, S;Gerosa, R;Ghezzi, A;Govoni, P;Manzoni, RA;Paganoni, M;Ragazzi, S;Tabarelli de Fatis, T;Branca, A;De Guio, F;Lucchini, MT;
2016

Abstract

The first search for a heavy charged vector boson in the final state with a tau lepton and a neutrino is reported, using 19.7 fb-1 of LHC data at s=8 TeV. A signal would appear as an excess of events with high transverse mass, where the standard model background is low. No excess is observed. Limits are set on a model in which the W' decays preferentially to fermions of the third generation. These results substantially extend previous constraints on this model. Masses below 2.0 to 2.7 TeV are excluded, depending on the model parameters. In addition, the existence of a W' boson with universal fermion couplings is excluded at 95% confidence level, for W' masses below 2.7 TeV. For further reinterpretation a model-independent limit on potential signals for various transverse mass thresholds is also presented.
Articolo in rivista - Articolo scientifico
CMS; Physics; W'decays;
CMS; Physics; W'decays; Nuclear and High Energy Physics
English
2016
755
196
216
none
Khachatryan, V., Sirunyan, A., Tumasyan, A., Adam, W., Asilar, E., Bergauer, T., et al. (2016). Search for W' decaying to tau lepton and neutrino in proton-proton collisions at s=8 TeV. PHYSICS LETTERS. SECTION B, 755, 196-216 [10.1016/j.physletb.2016.02.002].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/187798
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