Author
Sirunyan, A. M., Işıldak, Bora
Publication Date
2017-05-05
Publication Place
-
Springer International Publishing
Subject
Beyond Standard Model, Hadron-Hadron scattering (experiments), Vectorlike quarks
Type
Periodical
Language
English
Digital
Yes
Manuscript
No
Library
Özyeğin University
Library Asset ID
1029-8479
Record ID
df04e84d-5e52-4562-96e3-1634dd41a753
Library Location
Natural and Mathematical Sciences
Date
2017-05-05
Notes
Due to copyright restrictions, the access to the full text of this article is only available via subscription.
Sample Text
A search for single production of vector-like quarks, T and B, decaying into a Z boson and a top or a bottom quark, respectively, is presented. The search is performed using data collected by the CMS experiment at the LHC in proton-proton collisions at s√=13s=13 TeV, corresponding to an integrated luminosity of 2.3fb−1. An exotic T quark production mode through the decay of a heavy Z′ resonance is also considered. The search is performed in events with a Z boson decaying leptonically, accompanied by a bottom or a top quark decaying hadronically. No excess of events is observed over the standard model background expectation. Products of production cross section and branching fraction for T and B quarks from 1.26 and 0.13 pb are excluded at 95% confidence level for the range of resonance mass considered, which is between 0.7 and 1.7 TeV. Limits on the product of the Z′ boson production cross section and branching fraction, with the Z′ boson decaying to the Tt final state, are set between 0.31 and 0.13 pb, for Z′ boson masses in the range from 1.5 to 2.5 TeV. This is the first search at 13 TeV for single production of vector-like quarks in events with a Z boson decaying leptonically accompanied by boosted jets.
DOI
10.1007/JHEP05(2017)029
Cilt
2017
