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Single production of vector-like quarks: the effects of large width, interference and NLO corrections

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Title
Single production of vector-like quarks: the effects of large width, interference and NLO corrections
Author(s)
Aldo Deandrea; Thomas Flacke; Benjamin Fuks; Luca Panizzi; Hua-Sheng Shao
Subject
Beyond Standard Model, ; Exotics, ; Hadron-Hadron scattering (experiments), ; vector-like quarks
Publication Date
2021-08
Journal
JOURNAL OF HIGH ENERGY PHYSICS, v.2021, no.8, pp.1 - 52
Publisher
SPRINGER
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.
URI
https://pr.ibs.re.kr/handle/8788114/10218
DOI
10.1007/JHEP08(2021)107
ISSN
1126-6708
Appears in Collections:
Center for Fundamental Theory(순수물리이론 연구단) > 1. Journal Papers (저널논문)
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