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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
Sirunyan, A. M. ; Sanders, Stephen J. ; The CMS collaboration
Sirunyan, A. M.
Sanders, Stephen J.
The CMS collaboration
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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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This work is licensed under a Creative Commons Attribution 4.0 International License.
Date
2019-03-14
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Springer Verlag
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Keywords
Beyond Standard Model, Hadron-Hadron scattering (experiments), Top physics
Citation
The CMS collaboration., Sirunyan, A.M., Tumasyan, A. et al. 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. J. High Energ. Phys. 2019, 82 (2019). https://doi.org/10.1007/JHEP03(2019)082