Production of Λc                      + baryons in proton-proton and lead-lead collisions at s                         NN                      =5.02TeV

The CMS collaboration

doi:10.1016/j.physletb.2020.135328

Production of Λ_c ⁺ baryons in proton-proton and lead-lead collisions at s_{_NN}=5.02TeV

The CMS collaboration

Física

A. Alikhanian Yerevan Institute of Physics
Institut für Hochenergiephysik der OeAW
TU Wien
Belarusian State University
University of Antwerp
Vrije Universiteit Brussel
Université Libre de Bruxelles
Ghent University
Université Paris-Saclay
Université catholique de Louvain
Centro Brasileiro de Pesquisas Físicas
Universidade do Estado do Rio de Janeiro
Universidade Estadual de Campinas
Universidade Federal do Rio Grande do Sul
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Universidade Estadual Paulista Júlio de Mesquita Filho
Universidade Federal do ABC
Bulgarian Academy of Sciences
University of Sofia
Beihang University
Institute of High Energy Physics Chinese Academy of Science
University of Chinese Academy of Sciences
Peking University
Zhejiang University
Universidad de los Andes Colombia
University of Split
Faculty of Science, University of Split
Institute Rudjer Boskovic
Institute for Theoretical and Experimental Physics
University of Cyprus
Charles University
Joint Institute for Nuclear Research, Dubna
Escuela Politecnica Nacional
Egyptian Network of High Energy Physics
Fayoum University
National Institute of Chemical Physics and Biophysics, Tallinn
University of Helsinki
Helsinki Institute of Physics
Lappeenranta University of Technology
Institut Pluridisciplinaire Hubert Curien
Université de Haute-Alsace
IN2P3-CNRS
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Georgian Technical University
Tbilisi State University
RWTH Aachen University
Lomonosov Moscow State University
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CERN
Deutsches Elektronen-Synchrotron (DESY)
University of Hamburg
Brandenburg University of Technology
Karlsruhe Institute of Technology
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National Technical University of Athens
University of Ioannina
Eötvös Loránd University
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KFKI Research Institute for Particle and Nuclear Physics
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Indian Institute of Science
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Indian Institute of Technology Bhubaneswar
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Panjab University
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Saha Institute of Nuclear Physics
Shoolini University of Biotechnology and Management Sciences
Visva-Bharati University
Indian Institute of Technology Madras
Bhabha Atomic Research Centre
Tata Institute of Fundamental Research, Mumbai
Indian Institute of Science Education and Research Pune
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Isfahan University of Technology
University College Dublin
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Energy and Sustainable Economic Development
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St. Petersburg State Polytechnical University
University of Florida
Moscow Institute of Physics and Technology
National Research Nuclear University ‘Moscow Engineering Physics Institute’ (MEPhI)
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California Institute of Technology
Novosibirsk State University
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National Research Tomsk Polytechnic University
University of Belgrade
University of Belgrade
CIEMAT
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Institute for Scintillation Materials of National Academy of Science of Ukraine
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Research output: Contribution to journal › Article › peer-review

71 Scopus citations

Abstract

The transverse momentum (p_T) spectra of inclusively produced Λ_c ⁺ baryons are measured via the exclusive decay channel Λ_c ⁺→pK⁻π⁺ using the CMS detector at the LHC. Spectra are measured as a function of transverse momentum in proton-proton (pp) and lead-lead (PbPb) collisions at a nucleon-nucleon center-of-mass energy of 5.02 TeV. The measurement is performed within the Λ_c ⁺ rapidity interval |y|<1 in the p_T range of 5–20GeV/c in pp and 10–20GeV/c in PbPb collisions. The observed yields of Λ_c ⁺ for p_T of 10–20GeV/c suggest a suppression in central PbPb collisions compared to pp collisions scaled by the number of nucleon-nucleon (NN) interactions. The Λ_c ⁺/D⁰ production ratio in pp collisions is compared to theoretical models. In PbPb collisions, this ratio is consistent with the result from pp collisions in their common p_T range.

Original language	English
Article number	135328
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	803
DOIs	https://doi.org/10.1016/j.physletb.2020.135328
State	Published - 10 Apr 2020

Keywords

CMS
Heavy flavor
Lambda(c) baryons
Nuclear modification factor
Physics

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10.1016/j.physletb.2020.135328

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@article{845a67f85a2f49e6a6e50b70d53701c3,

title = "Production of Λc + baryons in proton-proton and lead-lead collisions at s NN =5.02TeV",

abstract = "The transverse momentum (pT) spectra of inclusively produced Λc + baryons are measured via the exclusive decay channel Λc +→pK−π+ using the CMS detector at the LHC. Spectra are measured as a function of transverse momentum in proton-proton (pp) and lead-lead (PbPb) collisions at a nucleon-nucleon center-of-mass energy of 5.02 TeV. The measurement is performed within the Λc + rapidity interval |y|<1 in the pT range of 5–20GeV/c in pp and 10–20GeV/c in PbPb collisions. The observed yields of Λc + for pT of 10–20GeV/c suggest a suppression in central PbPb collisions compared to pp collisions scaled by the number of nucleon-nucleon (NN) interactions. The Λc +/D0 production ratio in pp collisions is compared to theoretical models. In PbPb collisions, this ratio is consistent with the result from pp collisions in their common pT range.",

keywords = "CMS, Heavy flavor, Lambda(c) baryons, Nuclear modification factor, Physics",

author = "\{The CMS collaboration\} and Sirunyan, \{A. M.\} and A. Tumasyan and W. Adam and F. Ambrogi and T. Bergauer and J. Brandstetter and M. Dragicevic and J. Er{\"o} and \{Escalante Del Valle\}, A. and M. Flechl and R. Fr{\"u}hwirth and M. Jeitler and N. Krammer and I. Kr{\"a}tschmer and D. Liko and T. Madlener and I. Mikulec and N. Rad and J. Schieck and R. Sch{\"o}fbeck and M. Spanring and D. Spitzbart and W. Waltenberger and J. Wittmann and Wulz, \{C. E.\} and M. Zarucki and V. Drugakov and V. Mossolov and \{Suarez Gonzalez\}, J. and Darwish, \{M. R.\} and \{De Wolf\}, \{E. A.\} and \{Di Croce\}, D. and X. Janssen and A. Lauwers and A. Lelek and M. Pieters and \{Rejeb Sfar\}, H. and \{Van Haevermaet\}, H. and \{Van Mechelen\}, P. and \{Van Putte\}, S. and \{Van Remortel\}, N. and F. Blekman and Bols, \{E. S.\} and Chhibra, \{S. S.\} and J. D'Hondt and \{De Clercq\}, J. and D. Lontkovskyi and S. Lowette and I. Marchesini and \{Carrera Jarrin\}, E.",

note = "Publisher Copyright: {\textcopyright} 2020 The Author(s)",

year = "2020",

month = apr,

day = "10",

doi = "10.1016/j.physletb.2020.135328",

language = "Ingl{\'e}s",

volume = "803",

journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",

issn = "0370-2693",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - Production of Λc + baryons in proton-proton and lead-lead collisions at s NN =5.02TeV

AU - The CMS collaboration

AU - Sirunyan, A. M.

AU - Tumasyan, A.

AU - Adam, W.

AU - Ambrogi, F.

AU - Bergauer, T.

AU - Brandstetter, J.

AU - Dragicevic, M.

AU - Erö, J.

AU - Escalante Del Valle, A.

AU - Flechl, M.

AU - Frühwirth, R.

AU - Jeitler, M.

AU - Krammer, N.

AU - Krätschmer, I.

AU - Liko, D.

AU - Madlener, T.

AU - Mikulec, I.

AU - Rad, N.

AU - Schieck, J.

AU - Schöfbeck, R.

AU - Spanring, M.

AU - Spitzbart, D.

AU - Waltenberger, W.

AU - Wittmann, J.

AU - Wulz, C. E.

AU - Zarucki, M.

AU - Drugakov, V.

AU - Mossolov, V.

AU - Suarez Gonzalez, J.

AU - Darwish, M. R.

AU - De Wolf, E. A.

AU - Di Croce, D.

AU - Janssen, X.

AU - Lauwers, A.

AU - Lelek, A.

AU - Pieters, M.

AU - Rejeb Sfar, H.

AU - Van Haevermaet, H.

AU - Van Mechelen, P.

AU - Van Putte, S.

AU - Van Remortel, N.

AU - Blekman, F.

AU - Bols, E. S.

AU - Chhibra, S. S.

AU - D'Hondt, J.

AU - De Clercq, J.

AU - Lontkovskyi, D.

AU - Lowette, S.

AU - Marchesini, I.

AU - Carrera Jarrin, E.

PY - 2020/4/10

Y1 - 2020/4/10

N2 - The transverse momentum (pT) spectra of inclusively produced Λc + baryons are measured via the exclusive decay channel Λc +→pK−π+ using the CMS detector at the LHC. Spectra are measured as a function of transverse momentum in proton-proton (pp) and lead-lead (PbPb) collisions at a nucleon-nucleon center-of-mass energy of 5.02 TeV. The measurement is performed within the Λc + rapidity interval |y|<1 in the pT range of 5–20GeV/c in pp and 10–20GeV/c in PbPb collisions. The observed yields of Λc + for pT of 10–20GeV/c suggest a suppression in central PbPb collisions compared to pp collisions scaled by the number of nucleon-nucleon (NN) interactions. The Λc +/D0 production ratio in pp collisions is compared to theoretical models. In PbPb collisions, this ratio is consistent with the result from pp collisions in their common pT range.

AB - The transverse momentum (pT) spectra of inclusively produced Λc + baryons are measured via the exclusive decay channel Λc +→pK−π+ using the CMS detector at the LHC. Spectra are measured as a function of transverse momentum in proton-proton (pp) and lead-lead (PbPb) collisions at a nucleon-nucleon center-of-mass energy of 5.02 TeV. The measurement is performed within the Λc + rapidity interval |y|<1 in the pT range of 5–20GeV/c in pp and 10–20GeV/c in PbPb collisions. The observed yields of Λc + for pT of 10–20GeV/c suggest a suppression in central PbPb collisions compared to pp collisions scaled by the number of nucleon-nucleon (NN) interactions. The Λc +/D0 production ratio in pp collisions is compared to theoretical models. In PbPb collisions, this ratio is consistent with the result from pp collisions in their common pT range.

KW - CMS

KW - Heavy flavor

KW - Lambda(c) baryons

KW - Nuclear modification factor

KW - Physics

UR - https://www.scopus.com/pages/publications/85080054268

U2 - 10.1016/j.physletb.2020.135328

DO - 10.1016/j.physletb.2020.135328

M3 - Artículo

AN - SCOPUS:85080054268

SN - 0370-2693

VL - 803

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

M1 - 135328

ER -

Production of Λ_c ⁺ baryons in proton-proton and lead-lead collisions at s_{_NN}=5.02TeV

Abstract

Keywords

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