Abstract

We provide a comprehensive discussion, together with a complete setup for simulations, relevant for the production of a single vector-like quark at hadron colliders. Our predictions include finite width effects, signal-background interference effects and next-to-leading order QCD corrections. We explicitly apply the framework to study the single production of a vector-like quark T with charge 2/3, but the same procedure can be used to analyse the single production of vector-like quarks with charge 4/3, 1/3, 2/3 and 5/3, when the vector-like quark interacts with the Standard Model quarks and electroweak bosons. Moreover, this procedure can be straightforwardly extended to include additional interactions with exotic particles. We provide quantitative results for representative benchmark scenarios characterised by the T mass and width, and we determine the role of the interference terms for a range of masses and widths of phenomenological significance. We additionally describe in detail, both analytically and numerically, a striking feature in the invariant mass distribution appearing only in the T → th channel.

Details

Title
Single production of vector-like quarks: the effects of large width, interference and NLO corrections
Author
Deandrea, Aldo 1 ; Flacke, Thomas 2 ; Fuks, Benjamin 3   VIAFID ORCID Logo  ; Panizzi, Luca 4   VIAFID ORCID Logo  ; Shao, Hua-Sheng 5 

 Univ. Lyon, Université Claude Bernard Lyon 1, CNRS/IN2P3, IP2I UMR5822, Villeurbanne, France (GRID:grid.7849.2) (ISNI:0000 0001 2150 7757) 
 Institute for Basic Science (IBS), Center for Theoretical Physics of the Universe, Daejeon, Korea (GRID:grid.410720.0) (ISNI:0000 0004 1784 4496) 
 Laboratoire de Physique Théorique et Hautes Energies (LPTHE), UMR 7589, Sorbonne Université et CNRS, Paris Cedex 05, France (GRID:grid.463942.e) (ISNI:0000 0004 0369 8598); Institut Universitaire de France, Paris, France (GRID:grid.440891.0) (ISNI:0000 0001 1931 4817) 
 Uppsala University, Department of Physics and Astronomy, Uppsala, Sweden (GRID:grid.8993.b) (ISNI:0000 0004 1936 9457); University of Southampton, School of Physics and Astronomy, Southampton, U.K. (GRID:grid.5491.9) (ISNI:0000 0004 1936 9297) 
 Laboratoire de Physique Théorique et Hautes Energies (LPTHE), UMR 7589, Sorbonne Université et CNRS, Paris Cedex 05, France (GRID:grid.463942.e) (ISNI:0000 0004 0369 8598) 
Publication year
2021
Publication date
Aug 2021
Publisher
Springer Nature B.V.
e-ISSN
10298479
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
2601151334
Copyright
© The Author(s) 2021. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.