Single production of vectorlike Y quarks at the HL-LHC


Cetinkaya V., Ozansoy A., Ari V., Ozsimsek O. M., Cakir O.

NUCLEAR PHYSICS B, vol.973, 2021 (SCI-Expanded) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 973
  • Publication Date: 2021
  • Doi Number: 10.1016/j.nuclphysb.2021.115580
  • Journal Name: NUCLEAR PHYSICS B
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Chemical Abstracts Core, INSPEC, zbMATH, Directory of Open Access Journals
  • Hacettepe University Affiliated: Yes

Abstract

We study single production of exotic vectorlike Y quark with electric charge vertical bar Qy vertical bar = 4/3 and its subsequent decay at the High Luminosity LHC (HL-LHC). Most of the vector like quark (VLQ) decays have the electroweak W bosons in the intermediate state. Besides their direct productions singly or pairs, the W-bosons are involved in decay chains as a result of the decay of a top quark which contributes to the background. This is particularly the case since vectorlike Y quark, which is estimated to be produced with a high cross-section, can only decay via a W boson and a down type quark (d, s, b). We calculate the cross sections of signal (for different couplings and mass values) and relevant Standard Model (SM) backgrounds. After a fast simulation of signal and background events, estimations of the sensitivity to the parameters (mass range 1000-2500 GeV for coupling value kappa y = 0.5, and mass range 500-2000 GeV for coupling values kappa y = 0.3 and kappa y = 0.15) have been presented at the HL-LHC with centre of mass energy root s = 14 TeV and integrated luminosity projections of 300 fb(-1), 1000 fb(-1) and 3000 fb(-1). (C) 2021 The Authors. Published by Elsevier B.V.