Observation of strangeness enhancement with charmed mesons in high-multiplicity pPb collisions at sNN =8.16 TeV

The production of prompt Ds+ and D+ mesons is measured by the LHCb experiment in proton-lead (pPb) collisions in both the forward (1.5<y∗<4.0) and backward (-5.0<y∗<-2.5) rapidity regions at a nucleon-nucleon center-of-mass energy of sNN=8.16 TeV. The nuclear modification factors of both...

Descripción completa

Detalles Bibliográficos
Autores: Calvo Gomez, Miriam, Golobardes Ribé, Elisabet, Vilasis-Cardona, Xavier, LHCb Collaboration - CERN
Tipo de recurso: artículo
Fecha de publicación:2023
País:España
Institución:Universitat Ramon Llull (URL)
Repositorio:DAU Arxiu Digital de la Universitat Ramon Llull
OAI Identifier:oai:dau.url.edu:20.500.14342/6087
Acceso en línea:http://hdl.handle.net/20.500.14342/6087
https://doi.org/10.1103/PhysRevD.110.L031105
Access Level:acceso abierto
Palabra clave:Charged-particle multiplicity
Quark-gluon plasma
Relavistic heavy-ion collisions
Gran col·lisionador d'hadrons (França i Suïssa)
530.1
539
id ES_6cfb70cd0d4bd4c7fc619b2ca6bfa1d2
oai_identifier_str oai:dau.url.edu:20.500.14342/6087
network_acronym_str ES
network_name_str España
repository_id_str
spelling Observation of strangeness enhancement with charmed mesons in high-multiplicity pPb collisions at sNN =8.16 TeVCalvo Gomez, MiriamGolobardes Ribé, ElisabetVilasis-Cardona, XavierLHCb Collaboration - CERNCharged-particle multiplicityQuark-gluon plasmaRelavistic heavy-ion collisionsGran col·lisionador d'hadrons (França i Suïssa)530.1539The production of prompt Ds+ and D+ mesons is measured by the LHCb experiment in proton-lead (pPb) collisions in both the forward (1.5<y∗<4.0) and backward (-5.0<y∗<-2.5) rapidity regions at a nucleon-nucleon center-of-mass energy of sNN=8.16 TeV. The nuclear modification factors of both Ds+ and D+ mesons are determined as a function of transverse momentum, pT, and rapidity. In addition, the Ds+ to D+ cross section ratio is measured as a function of the primary charged particle multiplicity in the event. An enhanced Ds+ to D+ production in high-multiplicity events is observed for the whole measured pT range, in particular at low pT and backward rapidity, where the significance exceeds six standard deviations. This constitutes the first observation of strangeness enhancement in charm quark hadronization in high-multiplicity pPb collisions. The results are also qualitatively consistent with the presence of quark coalescence as an additional charm quark hadronization mechanism in high-multiplicity proton-lead collisions.info:eu-repo/semantics/updatedVersionAmerican Physical SocietyUniversitat Ramon Llull. La SalleCERN2026202620232024info:eu-repo/semantics/article14 p.application/pdfhttp://hdl.handle.net/20.500.14342/6087https://doi.org/10.1103/PhysRevD.110.L031105reponame:DAU Arxiu Digital de la Universitat Ramon Llullinstname:Universitat Ramon Llull (URL)InglésPhysicial Review D, 2024. Vol. 110, L031105© CERNAttribution 4.0 Internationalhttp://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessoai:dau.url.edu:20.500.14342/60872026-06-21T06:40:37Z
dc.title.none.fl_str_mv Observation of strangeness enhancement with charmed mesons in high-multiplicity pPb collisions at sNN =8.16 TeV
title Observation of strangeness enhancement with charmed mesons in high-multiplicity pPb collisions at sNN =8.16 TeV
spellingShingle Observation of strangeness enhancement with charmed mesons in high-multiplicity pPb collisions at sNN =8.16 TeV
Calvo Gomez, Miriam
Charged-particle multiplicity
Quark-gluon plasma
Relavistic heavy-ion collisions
Gran col·lisionador d'hadrons (França i Suïssa)
530.1
539
title_short Observation of strangeness enhancement with charmed mesons in high-multiplicity pPb collisions at sNN =8.16 TeV
title_full Observation of strangeness enhancement with charmed mesons in high-multiplicity pPb collisions at sNN =8.16 TeV
title_fullStr Observation of strangeness enhancement with charmed mesons in high-multiplicity pPb collisions at sNN =8.16 TeV
title_full_unstemmed Observation of strangeness enhancement with charmed mesons in high-multiplicity pPb collisions at sNN =8.16 TeV
title_sort Observation of strangeness enhancement with charmed mesons in high-multiplicity pPb collisions at sNN =8.16 TeV
dc.creator.none.fl_str_mv Calvo Gomez, Miriam
Golobardes Ribé, Elisabet
Vilasis-Cardona, Xavier
LHCb Collaboration - CERN
author Calvo Gomez, Miriam
author_facet Calvo Gomez, Miriam
Golobardes Ribé, Elisabet
Vilasis-Cardona, Xavier
LHCb Collaboration - CERN
author_role author
author2 Golobardes Ribé, Elisabet
Vilasis-Cardona, Xavier
LHCb Collaboration - CERN
author2_role author
author
author
dc.contributor.none.fl_str_mv Universitat Ramon Llull. La Salle
CERN
dc.subject.none.fl_str_mv Charged-particle multiplicity
Quark-gluon plasma
Relavistic heavy-ion collisions
Gran col·lisionador d'hadrons (França i Suïssa)
530.1
539
topic Charged-particle multiplicity
Quark-gluon plasma
Relavistic heavy-ion collisions
Gran col·lisionador d'hadrons (França i Suïssa)
530.1
539
description The production of prompt Ds+ and D+ mesons is measured by the LHCb experiment in proton-lead (pPb) collisions in both the forward (1.5<y∗<4.0) and backward (-5.0<y∗<-2.5) rapidity regions at a nucleon-nucleon center-of-mass energy of sNN=8.16 TeV. The nuclear modification factors of both Ds+ and D+ mesons are determined as a function of transverse momentum, pT, and rapidity. In addition, the Ds+ to D+ cross section ratio is measured as a function of the primary charged particle multiplicity in the event. An enhanced Ds+ to D+ production in high-multiplicity events is observed for the whole measured pT range, in particular at low pT and backward rapidity, where the significance exceeds six standard deviations. This constitutes the first observation of strangeness enhancement in charm quark hadronization in high-multiplicity pPb collisions. The results are also qualitatively consistent with the presence of quark coalescence as an additional charm quark hadronization mechanism in high-multiplicity proton-lead collisions.
publishDate 2023
dc.date.none.fl_str_mv 2023
2024
2026
2026
dc.type.none.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/20.500.14342/6087
https://doi.org/10.1103/PhysRevD.110.L031105
url http://hdl.handle.net/20.500.14342/6087
https://doi.org/10.1103/PhysRevD.110.L031105
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Physicial Review D, 2024. Vol. 110, L031105
dc.rights.none.fl_str_mv © CERN
Attribution 4.0 International
http://creativecommons.org/licenses/by/4.0/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv © CERN
Attribution 4.0 International
http://creativecommons.org/licenses/by/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 14 p.
application/pdf
dc.publisher.none.fl_str_mv American Physical Society
publisher.none.fl_str_mv American Physical Society
dc.source.none.fl_str_mv reponame:DAU Arxiu Digital de la Universitat Ramon Llull
instname:Universitat Ramon Llull (URL)
instname_str Universitat Ramon Llull (URL)
reponame_str DAU Arxiu Digital de la Universitat Ramon Llull
collection DAU Arxiu Digital de la Universitat Ramon Llull
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869410307261071360
score 15,811543

Similares en LA Referencia