Next-to-leading-order QCD corrections and parton-shower effects for weakino+squark production at the LHC

A bstract We present a calculation of the next-to-leading order QCD corrections to weakino+squark production processes at hadron colliders and their implementation in the framework of the POWHEG-BOX, a tool for the matching of fixed-order perturbative calculations with parton-shower programs. Partic...

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Bibliographic Details
Published in:The journal of high energy physics 2021-12, Vol.2021 (12), p.1-21, Article 20
Main Authors: Baglio, Julien, Coniglio, Gabriele, Jäger, Barbara, Spira, Michael
Format: Article
Language:English
Subjects:
Classical and Quantum Gravitation
Collaboration
Decay
Elementary Particles
High energy physics
Mathematical analysis
NLO Computations
Partons
Physics
Physics and Astronomy
Quantum chromodynamics
Quantum Field Theories
Quantum Field Theory
Quantum Physics
Quarks
Regular Article - Theoretical Physics
Relativity Theory
Stability analysis
String Theory
Subtraction
Supersymmetry Phenomenology
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Summary:A bstract We present a calculation of the next-to-leading order QCD corrections to weakino+squark production processes at hadron colliders and their implementation in the framework of the POWHEG-BOX, a tool for the matching of fixed-order perturbative calculations with parton-shower programs. Particular care is taken in the subtraction of on-shell resonances in the real-emission corrections that have to be assigned to production processes of a different type. In order to illustrate the capabilities of our code, representative results are shown for selected SUSY parameter points in the pMSSM11. The perturbative stability of the calculation is assessed for the pp → χ ˜ 1 0 d ˜ L process. For the squark+chargino production process pp → χ 1 − u ˜ L distributions of the chargino’s decay products are provided with the help of the decay feature of PYTHIA 8.
ISSN:1029-8479
1029-8479
DOI:10.1007/JHEP12(2021)020