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Search for top-quark partners with charge 5/3 in the same-sign dilepton final state

Search for top-quark partners with charge 5/3 in the same-sign dilepton final state
Search for top-quark partners with charge 5/3 in the same-sign dilepton final state
A search for the production of heavy partners of the top quark with charge 5/3 is performed in events with a pair of same-sign leptons. The data sample corresponds to an integrated luminosity of 19.5??fb?1 and was collected at ?s=8??TeV by the CMS experiment. No significant excess is observed in the data above the expected background, and the existence of top-quark partners with masses below 800 GeV is excluded at a 95% confidence level, assuming they decay exclusively to tW. This is the first limit on these particles from the LHC, and it is significantly more restrictive than previous limits.
Chatrchya, S.
0d25d7b1-97e8-4db7-97bc-6da89244e73b
Khachatrya, V.
3c6c36ec-dabc-44ac-be0c-7bd880525001
Sirunya, A.M.
40a68c24-94c1-4749-a69d-da4770f3aefe
Belyaev, Alexander
6bdb9638-5ff9-4b65-a8f2-34bae3ac34b3
Chatrchya, S.
0d25d7b1-97e8-4db7-97bc-6da89244e73b
Khachatrya, V.
3c6c36ec-dabc-44ac-be0c-7bd880525001
Sirunya, A.M.
40a68c24-94c1-4749-a69d-da4770f3aefe
Belyaev, Alexander
6bdb9638-5ff9-4b65-a8f2-34bae3ac34b3

Chatrchya, S., Khachatrya, V. and Sirunya, A.M. et al. (2014) Search for top-quark partners with charge 5/3 in the same-sign dilepton final state. Physical Review Letters, 112 (17), [171801]. (doi:10.1103/PhysRevLett.112.171801).

Record type: Article

Abstract

A search for the production of heavy partners of the top quark with charge 5/3 is performed in events with a pair of same-sign leptons. The data sample corresponds to an integrated luminosity of 19.5??fb?1 and was collected at ?s=8??TeV by the CMS experiment. No significant excess is observed in the data above the expected background, and the existence of top-quark partners with masses below 800 GeV is excluded at a 95% confidence level, assuming they decay exclusively to tW. This is the first limit on these particles from the LHC, and it is significantly more restrictive than previous limits.

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PhysRevLett.112.171801 - Version of Record
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Published date: 30 April 2014
Organisations: Physics & Astronomy

Identifiers

Local EPrints ID: 369429
URI: http://eprints.soton.ac.uk/id/eprint/369429
PURE UUID: 76c648d9-de3b-4aa8-bf8f-c5a8b7a3fc58
ORCID for Alexander Belyaev: ORCID iD orcid.org/0000-0002-1733-4408

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Date deposited: 26 Sep 2014 10:42
Last modified: 03 Dec 2019 01:45

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Contributors

Author: S. Chatrchya
Author: V. Khachatrya
Author: A.M. Sirunya

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