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Asymmetric heavy-quark hadroproduction at LHCb: Predictions and applications

We present a phenomenological analysis of asymmetric bottom- and charm-quark production within the LHCb acceptance relevant for pp collisions at $ \sqrt{s}=13 $ TeV. Predictions are provided for both anti-k$_{t}$ bottom- and charm-jet pairs, which are kept differentially with respect to the invarian...

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Detalles Bibliográficos
Autores principales: Gauld, Rhorry, Haisch, Ulrich, Pecjak, Benjamin D.
Lenguaje:eng
Publicado: 2019
Materias:
Acceso en línea:https://dx.doi.org/10.1007/JHEP03(2019)166
http://cds.cern.ch/record/2759240
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author Gauld, Rhorry
Haisch, Ulrich
Pecjak, Benjamin D.
author_facet Gauld, Rhorry
Haisch, Ulrich
Pecjak, Benjamin D.
author_sort Gauld, Rhorry
collection CERN
description We present a phenomenological analysis of asymmetric bottom- and charm-quark production within the LHCb acceptance relevant for pp collisions at $ \sqrt{s}=13 $ TeV. Predictions are provided for both anti-k$_{t}$ bottom- and charm-jet pairs, which are kept differentially with respect to the invariant mass of the jet pair. It is quantified how data in this region can provide sensitivity to the couplings of the Z boson to heavy quarks, and we investigate what precision is needed to compete with LEP. We also discuss how asymmetry and rate measurements can provide constraints on a particular class of new-physics models, which contains gauge bosons with small/moderate couplings to light/heavy quarks and masses of the order of 100GeV. Predictions are obtained including all relevant QCD and QED/weak contributions up to next-to-leading order, which have been implemented in a Fortran code which allows to directly compute the asymmetric cross sections. We provide all relevant analytic formulas for our computations.
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institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2019
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spelling cern-27592402021-11-13T09:17:54Zdoi:10.1007/JHEP03(2019)166doi:10.1007/JHEP03(2019)166http://cds.cern.ch/record/2759240engGauld, RhorryHaisch, UlrichPecjak, Benjamin D.Asymmetric heavy-quark hadroproduction at LHCb: Predictions and applicationshep-exParticle Physics - Experimenthep-phParticle Physics - PhenomenologyWe present a phenomenological analysis of asymmetric bottom- and charm-quark production within the LHCb acceptance relevant for pp collisions at $ \sqrt{s}=13 $ TeV. Predictions are provided for both anti-k$_{t}$ bottom- and charm-jet pairs, which are kept differentially with respect to the invariant mass of the jet pair. It is quantified how data in this region can provide sensitivity to the couplings of the Z boson to heavy quarks, and we investigate what precision is needed to compete with LEP. We also discuss how asymmetry and rate measurements can provide constraints on a particular class of new-physics models, which contains gauge bosons with small/moderate couplings to light/heavy quarks and masses of the order of 100GeV. Predictions are obtained including all relevant QCD and QED/weak contributions up to next-to-leading order, which have been implemented in a Fortran code which allows to directly compute the asymmetric cross sections. We provide all relevant analytic formulas for our computations.We present a phenomenological analysis of asymmetric bottom- and charm-quark production within the LHCb acceptance relevant for $pp$ collisions at $\sqrt{s} = 13 \, {\rm TeV}$. Predictions are provided for both anti-$k_t$ bottom- and charm-jet pairs, which are kept differentially with respect to the invariant mass of the jet pair. It is quantified how data in this region can provide sensitivity to the couplings of the $Z$ boson to heavy quarks, and we investigate what precision is needed to compete with LEP. We also discuss how asymmetry and rate measurements can provide constraints on a particular class of new-physics models, which contains gauge bosons with small/moderate couplings to light/heavy quarks and masses of the order of $100 \, {\rm GeV}$. Predictions are obtained including all relevant QCD and QED/weak contributions up to next-to-leading order, which have been implemented in a Fortran code which allows to directly compute the asymmetric cross sections. We provide all relevant analytic formulas for our computations.arXiv:1901.07573IPPP/19/6Nikhef-2019-003oai:cds.cern.ch:27592402019-01-22
spellingShingle hep-ex
Particle Physics - Experiment
hep-ph
Particle Physics - Phenomenology
Gauld, Rhorry
Haisch, Ulrich
Pecjak, Benjamin D.
Asymmetric heavy-quark hadroproduction at LHCb: Predictions and applications
title Asymmetric heavy-quark hadroproduction at LHCb: Predictions and applications
title_full Asymmetric heavy-quark hadroproduction at LHCb: Predictions and applications
title_fullStr Asymmetric heavy-quark hadroproduction at LHCb: Predictions and applications
title_full_unstemmed Asymmetric heavy-quark hadroproduction at LHCb: Predictions and applications
title_short Asymmetric heavy-quark hadroproduction at LHCb: Predictions and applications
title_sort asymmetric heavy-quark hadroproduction at lhcb: predictions and applications
topic hep-ex
Particle Physics - Experiment
hep-ph
Particle Physics - Phenomenology
url https://dx.doi.org/10.1007/JHEP03(2019)166
https://dx.doi.org/10.1007/JHEP03(2019)166
http://cds.cern.ch/record/2759240
work_keys_str_mv AT gauldrhorry asymmetricheavyquarkhadroproductionatlhcbpredictionsandapplications
AT haischulrich asymmetricheavyquarkhadroproductionatlhcbpredictionsandapplications
AT pecjakbenjamind asymmetricheavyquarkhadroproductionatlhcbpredictionsandapplications