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Λ+c production in pp collisions at $$ \sqrt{s}=7 $$ TeV and in p-Pb collisions at $$ \sqrt{s_{\mathrm{NN}}}=5.02 $$ TeV

87Citations signalées, ce qui n’est pas une note de qualité
146Institutions déclarées
36Pays d’affiliation déclarés

Rattachement africain : in, us, cz, se, ch, it, kr, ru, de, br, mx, pk, ua, no, ro, gb, hr, fr, hu, cn, pe, dk, nl, pl, sk, fi, at, jp, Afrique du Sud, cu, gr, tr, th, am, az, id. Niveau de preuve : code pays fourni par la source.

Le résumé fourni par la source

Abstract The p T-differential production cross section of prompt Λ c + charmed baryons was measured with the ALICE detector at the Large Hadron Collider (LHC) in pp collisions at $$ \sqrt{s}=7 $$ s = 7 TeV and in p-Pb collisions at $$ \sqrt{s_{\mathrm{NN}}}=5.02 $$ s N N = 5.02 TeV at midrapidity. The Λ c + and $$ {\overline{\varLambda}}_{\overline{\mathrm{c}}} $$ Λ ¯ c ¯ were reconstructed in the hadronic decay modes Λ c + → pK− π +, Λ c + → pK S 0 and in the semileptonic channel Λ c + → e+ ν e Λ (and charge conjugates). The measured values of the Λ c + /D0 ratio, which is sensitive to the c-quark hadronisation mechanism, and in particular to the production of baryons, are presented and are larger than those measured previously in different colliding systems, centre-of-mass energies, rapidity and p T intervals, where the Λ c + production process may differ. The results are compared with the expectations obtained from perturbative Quantum Chromodynamics calculations and Monte Carlo event generators. Neither perturbative QCD calculations nor Monte Carlo models reproduce the data, indicating that the fragmentation of heavy-flavour baryons is not well understood. The first measurement at the LHC of the Λ c + nuclear modification factor, R pPb, is also presented. The R pPb is found to be consistent with unity and with that of D mesons within the uncertainties, and consistent with a theoretical calculation that includes cold nuclear matter effects and a calculation that includes charm quark interactions with a deconfined medium.

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Le contrôle bibliographique ouvert

DOI retrouvé dans Crossref DOI retrouvé ; titre concordant.

Titre Crossref
Λ+c production in pp collisions at $$ \sqrt{s}=7 $$ TeV and in p-Pb collisions at $$ \sqrt{s_{\mathrm{NN}}}=5.02 $$ TeV
Date Crossref
01/04/2018
Éditeur
Springer Science and Business Media LLC
Type
journal-article

Ce recoupement confirme des métadonnées liées au DOI. Il ne confirme ni la méthode ni les conclusions de l’étude, et il ne compte pas comme une seconde source scientifique indépendante.

Les institutions déclarées

Variable Energy Cyclotron CentreUniversity of California, BerkeleyCzech Academy of Sciences, Nuclear Physics InstituteLund UniversityPanjab UniversityEuropean Organization for Nuclear ResearchPolitecnico di TorinoIndian Institute of Technology BombayKorea Institute of Science & Technology InformationYale UniversityInstitute for Theoretical and Experimental PhysicsGSI Helmholtz Centre for Heavy Ion ResearchUniversidade Estadual de Campinas (UNICAMP)Kurchatov InstituteIstituto Nazionale di Fisica Nucleare, Sezione di TorinoUniversidad Nacional Autónoma de MéxicoCOMSATS University IslamabadCentro Ricerche Enrico FermiNational Academy of Sciences of UkraineBogolyubov Institute for Theoretical PhysicsUniversity of BergenHoria Hulubei National Institute for R and D in Physics and Nuclear EngineeringUniversity of BirminghamHeidelberg UniversityCreighton UniversityRuđer Bošković InstituteIstituto Nazionale di Fisica Nucleare, Sezione di PadovaIstituto Nazionale di Fisica Nucleare, Sezione di BolognaLawrence Berkeley National LaboratoryCentre National de la Recherche ScientifiqueLaboratoire de Physique Subatomique et des Technologies AssociéesIMT AtlantiqueInstitut National de Physique Nucléaire et de Physique des ParticulesNantes UniversitéGoethe University FrankfurtTechnical University of MunichUniversity of OsloAligarh Muslim UniversityIstituto Nazionale di Fisica Nucleare, Sezione di CataniaInha UniversityUniversity of JammuCommissariat à l'Énergie Atomique et aux Énergies AlternativesUniversité Paris-SaclayCEA Paris-SaclayInstitut de Recherche sur les Lois Fondamentales de l'UniversUniversity of BonnInstitute of Physics, BhubaneshwarIstituto Nazionale di Fisica Nucleare, Sezione di BariHUN-REN Wigner Research Centre for PhysicsHungarian Academy of SciencesDaresbury LaboratoryUniversité Clermont AuvergneCentral China Normal UniversityWayne State UniversityJoint Institute for Nuclear ResearchPontificia Universidad Católica del PerúUniversity of CopenhagenUtrecht UniversityInstitut Pluridisciplinaire Hubert CurienUniversité de StrasbourgBenemérita Universidad Autónoma de PueblaUniversity of HoustonUniversidad Autónoma de SinaloaInstitute of Engineering PhysicsNational Research Nuclear University MEPhIPetersburg Nuclear Physics InstituteUniversity of Tennessee SystemUniversity of Tennessee at KnoxvilleGauhati UniversityInstitute of Nuclear Physics, Polish Academy of SciencesCzech Technical University in PragueBose InstituteThe University of Texas at AustinUniversity of PaviaUniversity of Pavol Jozef ŠafárikUniversity of BresciaPusan National UniversityUniversity of LiverpoolHospital Universitário da Universidade de São PauloHelsinki Institute of PhysicsAll-Russian Scientific Research Institute of Technical PhysicsStefan Meyer Institute for Subatomic PhysicsUniversity of TsukubaNational Research FoundationThe Ohio State UniversityTechnical University of KošiceIstituto Nazionale di Fisica Nucleare, Sezione di TriesteIstituto Nazionale di Fisica Nucleare, Sezione di CagliariCentro de Aplicaciones Tecnológicas y Desarrollo NuclearUniversity of JyväskyläSaha Institute of Nuclear PhysicsLyon 1 UniversitéNational Institute for Subatomic PhysicsUniversity of Cape TownLaboratoire de Physique Subatomique et de CosmologieUniversité Grenoble AlpesInstitut de PhysiqueOak Ridge National LaboratoryUniversità degli Studi del Piemonte Orientale “Amedeo Avogadro”Universidade Federal do ABCInstitute of Space Science - INFLPR SubsidiaryUniversity of SalernoFrankfurt Institute for Advanced StudiesNational Centre for Nuclear ResearchIstituto Nazionale di Fisica Nucleare, Laboratori Nazionali di FrascatiNational Institute of Science Education and ResearchUniversity of ZagrebUniversity of MünsterInstitute for Nuclear ResearchUniversity of TriesteNational and Kapodistrian University of AthensChicago State UniversityUniversidade Federal do Rio Grande do SulUniversity of SplitWarsaw University of TechnologyThe University of TokyoNagasaki Institute of Applied ScienceWestern Norway University of Applied SciencesCentro de Investigación y de Estudios Avanzados del Instituto Politécnico NacionalUniversity of TübingenSejong UniversityExcellence Cluster UniverseSlovak Academy of SciencesInstitute of Experimental Physics of the Slovak Academy of SciencesYonsei UniversityKTO Karatay UniversityUniversity of Applied Sciences WormsIndian Institute of Technology IndoreJeonbuk National UniversityGangneung–Wonju National UniversityCalifornia Polytechnic State UniversitySuranaree University of TechnologyUniversity of South-Eastern NorwayChina Institute of Atomic EnergyFZU ‒ Institute of Physics of the Academy of Sciences of the Czech RepublicIstituto Nazionale di Fisica Nucleare, Sezione di Roma IComenius University BratislavaHiroshima UniversityA. Alikhanyan National LaboratoryBudker Institute of Nuclear PhysicsUniversity of RajasthanNational Nuclear Research CenterNara Women's UniversityIndonesian Institute of SciencesCentre de Calcul de l’Institut National de Physique Nucléaire et de Physique des ParticulesUniversity of the Witwatersrand

Une affiliation ne permet pas de déduire la nationalité d’un auteur.

Les sujets associés

Particle physics theoretical and experimental studiesHigh-Energy Particle Collisions ResearchQuantum Chromodynamics and Particle Interactions

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