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Search for single production of a vector-like T quark decaying to a Z boson and a top quark in proton-proton collisions at sqrt(s) = 13 TeV

BELFORTE, S.
•
CANDELISE, V.
•
CASARSA, M.
altro
ET AL (the CMS Collaboration)
2018
  • journal article

Periodico
PHYSICS LETTERS. SECTION B
Abstract
A search is presented for single production of a vector-like quark (T) decaying to a Z boson and a top quark, with the Z boson decaying leptonically and the top quark decaying hadronically. The search uses data collected by the CMS experiment in proton–proton collisions at a center-of-mass energy of 13 TeV in 2016, corresponding to an integrated luminosity of 35.9fb−1. The presence of forward jets is a particular characteristic of single production of vector-like quarks that is used in the analysis. For the first time, different T quark width hypotheses are studied, from negligibly small to 30% of the new particle mass. At the 95% confidence level, the product of cross section and branching fraction is excluded above values in the range 0.26–0.04 pb for T quark masses in the range 0.7–1.7 TeV, assuming a negligible width. A similar sensitivity is observed for widths of up to 30% of the T quark mass. The production of a heavy Z′ boson decaying to Tt, with T→tZ, is also searched for, and limits on the product of cross section and branching fractions for this process are set between 0.13 and 0.06 pb for Z′ boson masses in the range from 1.5 to 2.5 TeV.
DOI
10.1016/j.physletb.2018.04.036
WOS
WOS:000435653100073
Archivio
http://hdl.handle.net/11368/2924955
info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85046377478
https://www.sciencedirect.com/science/article/pii/S0370269318303204?via%3Dihub
Diritti
open access
FVG url
https://arts.units.it/bitstream/11368/2924955/2/1-s2.0-S0370269318303204-main.pdf
Soggetti
  • PARTICLE PHYSICS

  • LARGE HADRON COLLIDER...

  • CMS

Scopus© citazioni
52
Data di acquisizione
Jun 7, 2022
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Web of Science© citazioni
56
Data di acquisizione
Mar 27, 2024
Visualizzazioni
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Data di acquisizione
Apr 19, 2024
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