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Search for top quark partners with charge 5/3 in the same-sign dilepton and single-lepton final states in proton-proton collisions at s√=13 TeV

Search for top quark partners with charge 5/3 in the same-sign dilepton and single-lepton final states in proton-proton collisions at s√=13 TeV
Search for top quark partners with charge 5/3 in the same-sign dilepton and single-lepton final states in proton-proton collisions at s√=13 TeV
A search for the pair production of heavy fermionic partners of the top quark with charge 5/3 (X5/3) is performed in proton-proton collisions at a center-of-mass energy of 13 TeV with the CMS detector at the CERN LHC. The data sample analyzed corresponds to an integrated luminosity of 35.9 fb−1. The X5/3 quark is assumed always to decay into a top quark and a W boson. Both the right-handed and left-handed X5/3 couplings to the W boson are considered. Final states with either a pair of same-sign leptons or a single lepton are studied. No significant excess of events is observed above the expected standard model background. Lower limits at 95% confidence level on the X5/3 quark mass are set at 1.33 and 1.30 TeV respectively for the case of right-handed and left-handed couplings to W bosons in a combination of the same-sign dilepton and single-lepton final states.
10.1007%2FJHEP03(2019)082
1029-8479
Sirunyan, A.M.
846a7137-803d-49de-aae7-d6b85519e829
Tumasyan, A.
6e9fc82d-9104-48e4-8a4d-60f52fdb9ee5
Adam, W.
cf28e097-e876-491a-b325-652e123da3c0
Belyaev, Alexander
6bdb9638-5ff9-4b65-a8f2-34bae3ac34b3
The CMS Collaboration
Sirunyan, A.M.
846a7137-803d-49de-aae7-d6b85519e829
Tumasyan, A.
6e9fc82d-9104-48e4-8a4d-60f52fdb9ee5
Adam, W.
cf28e097-e876-491a-b325-652e123da3c0
Belyaev, Alexander
6bdb9638-5ff9-4b65-a8f2-34bae3ac34b3

Sirunyan, A.M., Tumasyan, A. and Adam, W. , The CMS Collaboration (2019) Search for top quark partners with charge 5/3 in the same-sign dilepton and single-lepton final states in proton-proton collisions at s√=13 TeV. Journal of High Energy Physics. (doi:10.1007%2FJHEP03(2019)082).

Record type: Article

Abstract

A search for the pair production of heavy fermionic partners of the top quark with charge 5/3 (X5/3) is performed in proton-proton collisions at a center-of-mass energy of 13 TeV with the CMS detector at the CERN LHC. The data sample analyzed corresponds to an integrated luminosity of 35.9 fb−1. The X5/3 quark is assumed always to decay into a top quark and a W boson. Both the right-handed and left-handed X5/3 couplings to the W boson are considered. Final states with either a pair of same-sign leptons or a single lepton are studied. No significant excess of events is observed above the expected standard model background. Lower limits at 95% confidence level on the X5/3 quark mass are set at 1.33 and 1.30 TeV respectively for the case of right-handed and left-handed couplings to W bosons in a combination of the same-sign dilepton and single-lepton final states.

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Accepted/In Press date: 15 February 2019
e-pub ahead of print date: 14 March 2019

Identifiers

Local EPrints ID: 430152
URI: http://eprints.soton.ac.uk/id/eprint/430152
ISSN: 1029-8479
PURE UUID: 9c093dcb-d6c6-4131-9a5f-6fa6d06e5705
ORCID for Alexander Belyaev: ORCID iD orcid.org/0000-0002-1733-4408

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Date deposited: 15 Apr 2019 16:30
Last modified: 07 Oct 2020 01:53

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Contributors

Author: A.M. Sirunyan
Author: A. Tumasyan
Author: W. Adam
Corporate Author: The CMS Collaboration

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