Sirunyan, A. M. and Tumasyan, A. R. and Adam, Wolfgang and Ambrogi, Federico and Asilar, Ece and Md. Ali, Mohd. Adli (2019) Search for vector-like quarks in events with two oppositely charged leptons and jets in proton–proton collisions at √s = 13 TeV. European Physical Journal C, 79 (4). pp. 1-31. ISSN 1434-6044
PDF (The CMS Project)
- Published Version
Restricted to Repository staff only Download (966kB) | Request a copy |
||
|
PDF (SCOPUS)
- Supplemental Material
Download (122kB) | Preview |
|
|
PDF (wos)
- Supplemental Material
Download (947kB) | Preview |
Abstract
A search for the pair production of heavy vectorlike 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 √s = 13 TeV. The data sample was collected in 2016 and corresponds to an integrated luminosity of 35.9 fb−1. Final states studied for TT production include those where one of the T quarks decays via T → tZ and the other via T → bW, 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 B → bZ and the other B → tW, 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 T → tZ, and B → bZ, T and B quark mass values below 1280 and 1130 GeV, respectively, are excluded.
Item Type: | Article (Journal) |
---|---|
Additional Information: | 7861/79787 |
Uncontrolled Keywords: | Vector-like quarks, two oppositely charged leptons, jets, |
Subjects: | Q Science > Q Science (General) Q Science > QC Physics |
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button): | Kulliyyah of Science Kulliyyah of Science > Department of Physics |
Depositing User: | Dr Mohd Adli MD Ali |
Date Deposited: | 12 Jul 2020 15:45 |
Last Modified: | 12 Jul 2020 15:45 |
URI: | http://irep.iium.edu.my/id/eprint/79787 |
Actions (login required)
View Item |