Prompt Λ c + production in pPb collisions at √sNN=5.02 TeV

The Lhcb Collaboration

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Abstract

The prompt production of Λ c + baryons is studied in proton-lead collisions collected with the LHCb detector at the LHC. The data sample corresponds to an integrated luminosity of 1.58 nb −1 recorded at a nucleon-nucleon centre-of-mass energy of sNN=5.02 TeV. Measurements of the differential cross-section and the forwardbackward production ratio are reported for Λ c + baryons with transverse momenta in the range 2 < p T < 10 GeV/c and rapidities in the ranges 1.5 < y < 4.0 and −4.5 < y < −2.5 in the nucleon-nucleon centre-of-mass system. The ratio of cross-sections of Λ c + baryons and D 0 mesons is also reported. The results are compared with next-to-leading order calculations that use nuclear parton distribution functions.[Figure not available: see fulltext.]

Original languageEnglish
Article number102
Pages (from-to)1-26
Number of pages26
JournalJournal of High Energy Physics
Volume2019
Issue number2
Early online date15 Feb 2019
DOIs
Publication statusPublished - Feb 2019

Funding

We are grateful to H. Shao for providing theoretical calculations of prompt Λc+ production in pPb collisions in the LHCb acceptance. We express our gratitude to our colleagues in the CERN accelerator departments for the excellent performance of the LHC. We thank the technical and administrative staff at the LHCb institutes. We acknowledge support from CERN and from the national agencies: CAPES, CNPq, FAPERJ and FINEP (Brazil); MOST and NSFC (China); CNRS/IN2P3 (France); BMBF, DFG and MPG (Germany); INFN (Italy); NWO (Netherlands); MNiSW and NCN (Poland); MEN/IFA (Romania); MSHE (Russia); MinECo (Spain); SNSF and SER (Switzerland); NASU (Ukraine); STFC (United Kingdom); NSF (U.S.A.). We acknowledge the computing resources that are provided by CERN, IN2P3 (France), KIT and DESY (Germany), INFN (Italy), SURF (Netherlands), PIC (Spain), GridPP (United Kingdom), RRCKI and Yandex LLC (Russia), CSCS (Switzerland), IFIN-HH (Romania), CBPF (Brazil), PL-GRID (Poland) and OSC (U.S.A.). We are indebted to the communities behind the multiple open-source software packages on which we depend. Individual groups or members have received support from AvH Foundation (Germany); EPLANET, Marie Sklo dowska-Curie Actions and ERC (European Union); ANR, Labex P2IO and OCEVU, and Région Auvergne-Rhône-Alpes (France); Key Research Program of Frontier Sciences of CAS, CAS PIFI, and the Thousand Talents Program (China); RFBR, RSF and Yandex LLC (Russia); GVA, XuntaGal and GENCAT (Spain); the Royal Society and the Leverhulme Trust (United Kingdom); Laboratory Directed Research and Development program of LANL (U.S.A.). 55 Imperial College London, London, United Kingdom 56 School of Physics and Astronomy, University of Manchester, Manchester, United Kingdom 57 Department of Physics, University of Oxford, Oxford, United Kingdom 58 Massachusetts Institute of Technology, Cambridge, MA, United States 59 University of Cincinnati, Cincinnati, OH, United States 60 University of Maryland, College Park, MD, United States 61 Syracuse University, Syracuse, NY, United States 62 Pontifícia Universidade Católica do Rio de Janeiro (PUC-Rio), Rio de Janeiro, Brazil, associated to 2 63 University of Chinese Academy of Sciences, Beijing, China, associated to 64 School of Physics and Technology, Wuhan University, Wuhan, China, associated to 65 Institute of Particle Physics, Central China Normal University, Wuhan, Hubei, China, associated to 3 66 Departamento de Fisica, Universidad Nacional de Colombia, Bogota, Colombia, associated to 67 Institut für Physik, Universität Rostock, Rostock, Germany, associated to 12 68 Van Swinderen Institute, University of Groningen, Groningen, Netherlands, associated to 69 National Research Centre Kurchatov Institute, Moscow, Russia, associated to 34 70 National University of Science and Technology “MISIS”, Moscow, Russia, associated to 71 National Research University Higher School of Economics, Moscow, Russia, Moscow, Russia 72 National Research Tomsk Polytechnic University, Tomsk, Russia, associated to 34 73 Instituto de Fisica Corpuscular, Centro Mixto Universidad de Valencia - CSIC, Valencia, Spain, associated to 40 74 University of Michigan, Ann Arbor, United States, associated to 61 75 Los Alamos National Laboratory (LANL), Los Alamos, United States, associated to a Universidade Federal do Triângulo Mineiro (UFTM), Uberaba-MG, Brazil b Laboratoire Leprince-Ringuet, Palaiseau, France c P.N. Lebedev Physical Institute, Russian Academy of Science (LPI RAS), Moscow, Russia d Università di Bari, Bari, Italy e Università di Bologna, Bologna, Italy f Università di Cagliari, Cagliari, Italy g Università di Ferrara, Ferrara, Italy h Università di Genova, Genova, Italy i Università di Milano Bicocca, Milano, Italy j Università di Roma Tor Vergata, Roma, Italy k Università di Roma La Sapienza, Roma, Italy l AGH - University of Science and Technology, Faculty of Computer Science, Electronics and Telecommunications, Kraków, Poland m LIFAELS, La Salle, Universitat Ramon Llull, Barcelona, Spain n Hanoi University of Science, Hanoi, Vietnam o Università di Padova, Padova, Italy p Università di Pisa, Pisa, Italy q Università degli Studi di Milano, Milano, Italy r Università di Urbino, Urbino, Italy s Università della Basilicata, Potenza, Italy t Scuola Normale Superiore, Pisa, Italy u Università di Modena e Reggio Emilia, Modena, Italy v MSU - Iligan Institute of Technology (MSU-IIT), Iligan, Philippines w Novosibirsk State University, Novosibirsk, Russia x Sezione INFN di Trieste, Trieste, Italy y Escuela Agrícola Panamericana, San Antonio de Oriente, Honduras z School of Physics and Information Technology, Shaanxi Normal University (SNNU), Xi’an, China Physics and Micro Electronic College, Hunan University, Changsha City, China National Research University Higher School of Economics, Moscow, Russia † Deceased

FundersFunder number
Not addedST/J004332/1, ST/N000447/1, ST/K003410/1, 1796908, ST/N000331/1, ST/N000463/1, ST/N000455/1, ST/L003163/1, ST/N000242/1
AvH Foundation
CNRS/IN2P3
Key Research Program of Frontier Sciences of CAS
MSHE
Marie Sklo dowska-Curie Actions
OCEVU
XuntaGal
Yandex LLC
National Science Foundation
Laboratory Directed Research and Development
Los Alamos National Laboratory
School of Energy Resources, University of Wyoming
Horizon 2020 Framework Programme647390
CERN
Science and Technology Facilities Council1681016, LHCb, LHCb Upgrades
Leverhulme Trust
Royal Society
European Research Council
Deutsche Forschungsgemeinschaft
Agence Nationale de la Recherche
Schweizerischer Nationalfonds zur F&#x00F6;rderung der Wissenschaftlichen Forschung166208
National Natural Science Foundation of China
Russian Foundation for Basic Research
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
Bundesministerium für Bildung und Forschung
Chinese Academy of Sciences
Nederlandse Organisatie voor Wetenschappelijk Onderzoek
Generalitat Valenciana
Conselho Nacional de Desenvolvimento Científico e Tecnológico
Ministry of Science and Technology
Instituto Nazionale di Fisica Nucleare
Narodowe Centrum Nauki
Ministerstwo Nauki i Szkolnictwa Wyższego
Fundação Carlos Chagas Filho de Amparo à Pesquisa do Estado do Rio de Janeiro
National Academy of Sciences of Ukraine
Financiadora de Estudos e Projetos
Russian Science Foundation
Région Auvergne-Rhône-Alpes
Recruitment Program of Global Experts

    Keywords

    • Charm physics
    • Forward physics
    • Heavy Ion Experiments
    • Heavy quark production

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