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Non prompt D-meson measurements with ALICE at the LHC

The production of hadrons with open heavy flavour (charm and beauty) in high-energy nucleus-nucleus collisions is a powerful tool to study the properties of the deconfined phase of strongly interacting matter known as the Quark-Gluon Plasma (QGP). The production of charm and beauty quarks occurs in...

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Autor principal: Mazzilli, Marianna
Lenguaje:eng
Publicado: 2016
Materias:
Acceso en línea:https://dx.doi.org/10.1051/epjconf/201612900033
http://cds.cern.ch/record/2277664
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author Mazzilli, Marianna
author_facet Mazzilli, Marianna
author_sort Mazzilli, Marianna
collection CERN
description The production of hadrons with open heavy flavour (charm and beauty) in high-energy nucleus-nucleus collisions is a powerful tool to study the properties of the deconfined phase of strongly interacting matter known as the Quark-Gluon Plasma (QGP). The production of charm and beauty quarks occurs in hard partonic scattering processes in the early stage of the collisions. ALICE is the LHC experiment devoted to the study of heavy-ion physics. It is able to reconstruct charmed mesons in exclusive decays (e.g. D^0->K^-pi^+) and beauty hadrons in semi-inclusive decays (e.g. B->eX, B->J/psi X) . At LHC energies a significant component of the inclusive D-meson yield originates from the decay of beauty-flavoured hadrons, whose knowledge is essential to determine the production of prompt D mesons coming from charm quarks. A precise determination of the non-prompt fraction combined with the determination of the inclusive D-meson yield would allow a measurement of beauty production. A data-driven method that exploits the different shapes of the distributions of the transverse-plane impact parameter to the primary vertex of prompt and feed-down D mesons in p-Pb collisions is used in ALICE. An alternative approach based on the D-meson decay length for Pb-Pb collisions is under study.
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institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2016
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spelling oai-inspirehep.net-15003462019-09-30T06:29:59Zdoi:10.1051/epjconf/201612900033http://cds.cern.ch/record/2277664engMazzilli, MariannaNon prompt D-meson measurements with ALICE at the LHCNuclear Physics - ExperimentParticle Physics - ExperimentThe production of hadrons with open heavy flavour (charm and beauty) in high-energy nucleus-nucleus collisions is a powerful tool to study the properties of the deconfined phase of strongly interacting matter known as the Quark-Gluon Plasma (QGP). The production of charm and beauty quarks occurs in hard partonic scattering processes in the early stage of the collisions. ALICE is the LHC experiment devoted to the study of heavy-ion physics. It is able to reconstruct charmed mesons in exclusive decays (e.g. D^0->K^-pi^+) and beauty hadrons in semi-inclusive decays (e.g. B->eX, B->J/psi X) . At LHC energies a significant component of the inclusive D-meson yield originates from the decay of beauty-flavoured hadrons, whose knowledge is essential to determine the production of prompt D mesons coming from charm quarks. A precise determination of the non-prompt fraction combined with the determination of the inclusive D-meson yield would allow a measurement of beauty production. A data-driven method that exploits the different shapes of the distributions of the transverse-plane impact parameter to the primary vertex of prompt and feed-down D mesons in p-Pb collisions is used in ALICE. An alternative approach based on the D-meson decay length for Pb-Pb collisions is under study.The production of hadrons with open heavy flavour (charm and beauty) in high-energy nucleus-nucleus collisions is a powerful tool to study the properties of the deconfined phase of strongly interacting matter known as the Quark-Gluon Plasma (QGP). The production of charm and beauty quarks occurs in hard partonic scattering processes in the early stage of the collisions. ALICE is the LHC experiment devoted to the study of heavy-ion physics. It is able to reconstruct charmed mesons in exclusive decays (e.g. D0→K−π+) and beauty hadrons in semi-inclusive decays (e.g. B→eX, B→J/ψ X) . At LHC energies a significant component of the inclusive D-meson yield originates from the decay of beauty-flavoured hadrons, whose knowledge is essential to determine the production of prompt D mesons coming from charm quarks. A precise determination of the non-prompt fraction combined with the determination of the inclusive D-meson yield would allow a measurement of beauty production. A data-driven method that exploits the different shapes of the distributions of the transverse-plane impact parameter to the primary vertex of prompt and feed-down D mesons in p-Pb collisions is used in ALICE. An alternative approach based on the D-meson decay length for Pb–Pb collisions is under study.oai:inspirehep.net:15003462016
spellingShingle Nuclear Physics - Experiment
Particle Physics - Experiment
Mazzilli, Marianna
Non prompt D-meson measurements with ALICE at the LHC
title Non prompt D-meson measurements with ALICE at the LHC
title_full Non prompt D-meson measurements with ALICE at the LHC
title_fullStr Non prompt D-meson measurements with ALICE at the LHC
title_full_unstemmed Non prompt D-meson measurements with ALICE at the LHC
title_short Non prompt D-meson measurements with ALICE at the LHC
title_sort non prompt d-meson measurements with alice at the lhc
topic Nuclear Physics - Experiment
Particle Physics - Experiment
url https://dx.doi.org/10.1051/epjconf/201612900033
http://cds.cern.ch/record/2277664
work_keys_str_mv AT mazzillimarianna nonpromptdmesonmeasurementswithaliceatthelhc