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QCD next-to-leading-order predictions matched to parton showers for vector-like quark models

Vector-like quarks are featured by a wealth of beyond the Standard Model theories and are consequently an important goal of many LHC searches for new physics. Those searches, as well as most related phenomenological studies, however, rely on predictions evaluated at the leading-order accuracy in QCD...

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Detalles Bibliográficos
Autores principales: Fuks, Benjamin, Shao, Hua-Sheng
Lenguaje:eng
Publicado: 2016
Materias:
Acceso en línea:https://dx.doi.org/10.1140/epjc/s10052-017-4686-z
http://cds.cern.ch/record/2225709
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author Fuks, Benjamin
Shao, Hua-Sheng
author_facet Fuks, Benjamin
Shao, Hua-Sheng
author_sort Fuks, Benjamin
collection CERN
description Vector-like quarks are featured by a wealth of beyond the Standard Model theories and are consequently an important goal of many LHC searches for new physics. Those searches, as well as most related phenomenological studies, however, rely on predictions evaluated at the leading-order accuracy in QCD and consider well-defined simplified benchmark scenarios. Adopting an effective bottom-up approach, we compute next-to-leading-order predictions for vector-like-quark pair production and single production in association with jets, with a weak or with a Higgs boson in a general new physics setup. We additionally compute vector-like-quark contributions to the production of a pair of Standard Model bosons at the same level of accuracy. For all processes under consideration, we focus both on total cross sections and on differential distributions, most these calculations being performed for the first time in our field. As a result, our work paves the way to precise extraction of experimental limits on vector-like quarks thanks to an accurate control of the shapes of the relevant observables and emphasise the extra handles that could be provided by novel vector-like-quark probes never envisaged so far.
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institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2016
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spelling cern-22257092022-08-10T12:35:00Zdoi:10.1140/epjc/s10052-017-4686-zhttp://cds.cern.ch/record/2225709engFuks, BenjaminShao, Hua-ShengQCD next-to-leading-order predictions matched to parton showers for vector-like quark modelshep-exParticle Physics - Experimenthep-phParticle Physics - PhenomenologyVector-like quarks are featured by a wealth of beyond the Standard Model theories and are consequently an important goal of many LHC searches for new physics. Those searches, as well as most related phenomenological studies, however, rely on predictions evaluated at the leading-order accuracy in QCD and consider well-defined simplified benchmark scenarios. Adopting an effective bottom-up approach, we compute next-to-leading-order predictions for vector-like-quark pair production and single production in association with jets, with a weak or with a Higgs boson in a general new physics setup. We additionally compute vector-like-quark contributions to the production of a pair of Standard Model bosons at the same level of accuracy. For all processes under consideration, we focus both on total cross sections and on differential distributions, most these calculations being performed for the first time in our field. As a result, our work paves the way to precise extraction of experimental limits on vector-like quarks thanks to an accurate control of the shapes of the relevant observables and emphasise the extra handles that could be provided by novel vector-like-quark probes never envisaged so far.Vector-like quarks are featured by a wealth of beyond the Standard Model theories and are consequently an important goal of many LHC searches for new physics. Those searches, as well as most related phenomenological studies, however rely on predictions evaluated at the leading-order accuracy in QCD and consider well-defined simplified benchmark scenarios. Adopting an effective bottom-up approach, we compute next-to-leading-order predictions for vector-like-quark pair-production and single production in association with jets, with a weak or with a Higgs boson in a general new physics setup. We additionally compute vector-like-quark contributions to the production of a pair of Standard Model bosons at the same level of accuracy. For all processes under consideration, we focus both on total cross sections and on differential distributions, most these calculations being performed for the first time in our field. As a result, our work paves the way to precise extraction of experimental limits on vector-like quarks thanks to an accurate control of the shapes of the relevant observables and emphasize the extra handles that could be provided by novel vector-like-quark probes never envisaged so fararXiv:1610.04622CERN-TH-2016-210MCNET-16-38oai:cds.cern.ch:22257092016-10-14
spellingShingle hep-ex
Particle Physics - Experiment
hep-ph
Particle Physics - Phenomenology
Fuks, Benjamin
Shao, Hua-Sheng
QCD next-to-leading-order predictions matched to parton showers for vector-like quark models
title QCD next-to-leading-order predictions matched to parton showers for vector-like quark models
title_full QCD next-to-leading-order predictions matched to parton showers for vector-like quark models
title_fullStr QCD next-to-leading-order predictions matched to parton showers for vector-like quark models
title_full_unstemmed QCD next-to-leading-order predictions matched to parton showers for vector-like quark models
title_short QCD next-to-leading-order predictions matched to parton showers for vector-like quark models
title_sort qcd next-to-leading-order predictions matched to parton showers for vector-like quark models
topic hep-ex
Particle Physics - Experiment
hep-ph
Particle Physics - Phenomenology
url https://dx.doi.org/10.1140/epjc/s10052-017-4686-z
http://cds.cern.ch/record/2225709
work_keys_str_mv AT fuksbenjamin qcdnexttoleadingorderpredictionsmatchedtopartonshowersforvectorlikequarkmodels
AT shaohuasheng qcdnexttoleadingorderpredictionsmatchedtopartonshowersforvectorlikequarkmodels