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

Search for W' decaying to tau lepton and neutrino in proton-proton collisions at $s) =$ 8 TeV
Search for W' decaying to tau lepton and neutrino in proton-proton collisions at $s) =$ 8 TeV
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 View the MathML sources=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′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′W′ boson with universal fermion couplings is excluded at 95% confidence level, for W′W′ masses below 2.7 TeV. For further reinterpretation a model-independent limit on potential signals for various transverse mass thresholds is also presented.
0370-2693
196-216
Khachatryan, Vardan
375bcfe5-df1a-41ad-9a90-553e557ef6d6
Belyaev, Alexander
6bdb9638-5ff9-4b65-a8f2-34bae3ac34b3
The CMS Collaboration
Khachatryan, Vardan
375bcfe5-df1a-41ad-9a90-553e557ef6d6
Belyaev, Alexander
6bdb9638-5ff9-4b65-a8f2-34bae3ac34b3

The CMS Collaboration (2016) Search for W' decaying to tau lepton and neutrino in proton-proton collisions at $s) =$ 8 TeV. Physics Letters B, B755, 196-216. (doi:10.1016/j.physletb.2016.02.002). (In Press)

Record type: Article

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 View the MathML sources=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′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′W′ boson with universal fermion couplings is excluded at 95% confidence level, for W′W′ masses below 2.7 TeV. For further reinterpretation a model-independent limit on potential signals for various transverse mass thresholds is also presented.

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Accepted/In Press date: 1 February 2016
Organisations: Physics & Astronomy

Identifiers

Local EPrints ID: 408251
URI: http://eprints.soton.ac.uk/id/eprint/408251
ISSN: 0370-2693
PURE UUID: bb50ca76-1b10-47ac-8a5f-3dd7541ca154
ORCID for Alexander Belyaev: ORCID iD orcid.org/0000-0002-1733-4408

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Date deposited: 18 May 2017 04:02
Last modified: 22 Nov 2021 02:55

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Contributors

Author: Vardan Khachatryan
Corporate Author: The CMS Collaboration

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