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Search for $W' to tb$ in proton-proton collisions at $s = $ 8 TeV

Search for $W' to tb$ in proton-proton collisions at $s = $ 8 TeV
Search for $W' to tb$ in proton-proton collisions at $s = $ 8 TeV
A search is performed for the production of a massive W′ boson decaying to a top and a bottom quark. The data analysed correspond to an integrated luminosity of 19.7 fb−1 collected with the CMS detector at the LHC in proton-proton collisions at s √ =8
s=8
TeV. The hadronic decay products of the top quark with high Lorentz boost from the W′ boson decay are detected as a single top flavoured jet. The use of jet substructure algorithms allows the top quark jet to be distinguished from standard model QCD background. Limits on the production cross section of a right-handed W′ boson are obtained, together with constraints on the left-handed and right-handed couplings of the W′ boson to quarks. The production of a right-handed W′ boson with a mass below 2.02 TeV decaying to a hadronic final state is excluded at 95% confidence level. This mass limit increases to 2.15 TeV when both hadronic and leptonic decays are considered, and is the most stringent lower mass limit to date in the tb decay mode.
1029-8479
122
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 $W' to tb$ in proton-proton collisions at $s = $ 8 TeV. Journal of High Energy Physics, 02, 122. (doi:10.1007/JHEP02(2016)122).

Record type: Article

Abstract

A search is performed for the production of a massive W′ boson decaying to a top and a bottom quark. The data analysed correspond to an integrated luminosity of 19.7 fb−1 collected with the CMS detector at the LHC in proton-proton collisions at s √ =8
s=8
TeV. The hadronic decay products of the top quark with high Lorentz boost from the W′ boson decay are detected as a single top flavoured jet. The use of jet substructure algorithms allows the top quark jet to be distinguished from standard model QCD background. Limits on the production cross section of a right-handed W′ boson are obtained, together with constraints on the left-handed and right-handed couplings of the W′ boson to quarks. The production of a right-handed W′ boson with a mass below 2.02 TeV decaying to a hadronic final state is excluded at 95% confidence level. This mass limit increases to 2.15 TeV when both hadronic and leptonic decays are considered, and is the most stringent lower mass limit to date in the tb decay mode.

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Accepted/In Press date: 16 February 2016
e-pub ahead of print date: 18 February 2016
Organisations: Physics & Astronomy

Identifiers

Local EPrints ID: 408088
URI: http://eprints.soton.ac.uk/id/eprint/408088
ISSN: 1029-8479
PURE UUID: 69f70e88-6c2b-499b-a3bd-257348f4073e
ORCID for Alexander Belyaev: ORCID iD orcid.org/0000-0002-1733-4408

Catalogue record

Date deposited: 11 May 2017 01:08
Last modified: 03 Dec 2019 01:45

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Contributors

Author: Vardan Khachatryan
Corporate Author: The CMS Collaboration

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