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Title: | Search for vector-like quarks in events with two oppositely charged leptons and jets in proton–proton collisions at √s=13TeV |
Authors: | CMS Collaboration Sirunyan, A. M. CHAUHAN, S. DUBE, SOURABH HEGDE, V. KAPOOR, A. KOTHEKAR, K. PANDEY, S. RANE, A. RASTOGI, A. SHARMA, SEEMA et al. Dept. of Physics |
Keywords: | Physics Boson Mass TOC-MAY-2019 2019 |
Issue Date: | Apr-2019 |
Publisher: | Springer Nature |
Citation: | European Physical Journal C, 79(4). |
Abstract: | A search for the pair production of heavy vector-like partners T and B of the top and bottom quarks has been performed by the CMS experiment at the CERN LHC using proton-proton collisions at . The data sample was collected in 2016 and corresponds to an integrated luminosity of 35.9 production include those where one of the T quarks decays via TtZ and the other via TbW, tZ, or tH, where H is a Higgs boson. For the BB case, final states include those where one of the B quarks decays via BbZ and the other BtW, bZ, or bH. Events with two oppositely charged electrons or muons, consistent with coming from the decay of a Z boson, and jets are investigated. The number of observed events is consistent with standard model background estimations. Lower limits at 95% confidence level are placed on the masses of the T and B quarks for a range of branching fractions. Assuming 100% branching fractions for TtZ, and BbZ, T and B quark mass values below 1280 and 1130 respectively, are excluded. |
URI: | http://dr.iiserpune.ac.in:8080/xmlui/handle/123456789/3078 https://doi.org/10.1140/epjc/s10052-019-6855-8 |
ISSN: | 1434-6044 1434-6052 |
Appears in Collections: | JOURNAL ARTICLES |
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