Λc+ Production and Baryon-to-Meson Ratios in pp and p -Pb Collisions at sNN =5.02 TeV at the LHC

(ALICE Collaboration)

doi:10.1103/PhysRevLett.127.202301

Λc+ Production and Baryon-to-Meson Ratios in pp and p -Pb Collisions at sNN =5.02 TeV at the LHC

(ALICE Collaboration)

Sección de Física

Variable Energy Cyclotron Centre
Czech Academy of Sciences
Goethe University Frankfurt
Lund University
CERN
National Institute for Nuclear Physics
Aligarh Muslim University
Korea Institute of Science and Technology Information
Indonesian Institute of Sciences
Russian Research Centre Kurchatov Institute
GSI Helmholtz Centre for Heavy Ion Research
Universidade Estadual de Campinas
Central China Normal University
Universidad Nacional Autónoma de México
COMSATS University Islamabad
University of Houston
University of Bergen
St. Petersburg State University
Horia Hulubei National Institute of Physics and Nuclear Engineering
National Institute for Subatomic Physics
University of Münster
Heidelberg University
Ruder Boskovic Institute
Lawrence Berkeley National Laboratory
Nantes Université
University of Oslo
Yale University
Laboratoire de Physique des 2 Infinis Irène Joliot-Curie
Kangwon National University
University of Jammu
Commissariat à l’énergie atomique et aux énergies alternatives
University of Bonn
Bose Institute
University of Catania
National and Kapodistrian University of Athens
Wigner Research Centre for Physics
STFC Daresbury Laboratory
Université Clermont Auvergne
University of Liverpool
Wayne State University
Joint Institute for Nuclear Research
Indian Institute of Technology Bombay
University of Copenhagen
Université de Strasbourg
Moscow Engineering Physics Institute
RAS - Saint Petersburg Nuclear Physics Institute
Institute for Space Sciences
Gauhati University
Faculty of Nuclear Sciences and Physical Engineering
Technical University of Munich
University of Texas at Austin
University of Pavia
Oak Ridge National Laboratory
Inha University
Pavol Jozef Šafárik University
University of Brescia
Moscow Institute of Physics and Technology
Universidade de São Paulo
Polytechnic University of Bari
All-Russian Scientific Research Institute of Experimental Physics
Austrian Academy of Sciences
National Research Foundation
University of the Witwatersrand
Henryk Niewodniczanski Institute of Nuclear Physics of the Polish Academy of Sciences
Pontificia Universidad Católica del Perú
Universidad Autonoma de Sinaloa
Benemerita Universidad Autonoma de Puebla
Homi Bhabha National Institute
Université de Lyon
University of Tsukuba
Agenzia nazionale per le nuove tecnologie, l'energia e lo sviluppo economico sostenibile
University of Cape Town
University of Birmingham
Polytechnic University of Turin
Université Grenoble Alpes
University of Eastern Piedmont
Universidade Federal do ABC
Indian Institute of Technology Indore
Warsaw University of Technology
University of California at Berkeley
Centro de Aplicaciones Tecnológicas y Desarrollo Nuclear
RAS - Institute for Nuclear Research
Panjab University
University of Zagreb
Institute for High Energy Physics
Chicago State University
National Nuclear Research Center
Universidade Federal do Rio Grande do Sul
University of Split
Utrecht University
A. Alikhanian Yerevan Institute of Physics
The University of Tokyo
Nagasaki Institute of Applied Science
Western Norway University of Applied Sciences
Centro de Investigacion y de Estudios Avanzados del Instituto Politécnico Nacional
Yonsei University
Creighton University
University of Tennessee, Knoxville
Ohio State University
Technical University of Kosice
Slovak Academy of Sciences
KTO Karatay University
Zentrum für Technologietransfer und Telekommunikation (ZTT)
University of Jyväskylä
Jeonbuk National University
Pusan National University
Sejong University
California Polytechnic State University, San Luis Obispo
Suranaree University of Technology
AGH University of Krakow
National Centre for Nuclear Research
University of South-Eastern Norway
China National Nuclear Corporation
Fudan University
Lomonosov Moscow State University
University of Messina
University of Foggia
University of Rome La Sapienza
Comenius University
Chungbuk National University
Hiroshima University
RAS - Budker Institute of Nuclear Physics
University of Rajasthan
University of Helsinki
University of Wrocław
University of Tübingen
Nara Women's University
University of Science and Technology of China
NASU - Bogolyubov Institute for Theoretical Physics

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76 Citas (Scopus)

Resumen

The prompt production of the charm baryon Λc+ and the Λc+/D0 production ratios were measured at midrapidity with the ALICE detector in pp and p-Pb collisions at sNN=5.02 TeV. These new measurements show a clear decrease of the Λc+/D0 ratio with increasing transverse momentum (pT) in both collision systems in the range 2<pT<12 GeV/c, exhibiting similarities with the light-flavor baryon-to-meson ratios p/π and Λ/KS0. At low pT, predictions that include additional color-reconnection mechanisms beyond the leading-color approximation, assume the existence of additional higher-mass charm-baryon states, or include hadronization via coalescence can describe the data, while predictions driven by charm-quark fragmentation processes measured in e+e- and e-p collisions significantly underestimate the data. The results presented in this Letter provide significant evidence that the established assumption of universality (colliding-system independence) of parton-to-hadron fragmentation is not sufficient to describe charm-baryon production in hadronic collisions at LHC energies.

Idioma original	Inglés
Número de artículo	202301
Publicación	Physical Review Letters
Volumen	127
N.º	20
DOI	https://doi.org/10.1103/PhysRevLett.127.202301
Estado	Publicada - 12 nov. 2021

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10.1103/PhysRevLett.127.202301

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title = "Λc+ Production and Baryon-to-Meson Ratios in pp and p -Pb Collisions at sNN =5.02 TeV at the LHC",

abstract = "The prompt production of the charm baryon Λc+ and the Λc+/D0 production ratios were measured at midrapidity with the ALICE detector in pp and p-Pb collisions at sNN=5.02 TeV. These new measurements show a clear decrease of the Λc+/D0 ratio with increasing transverse momentum (pT) in both collision systems in the range 2",

author = "\{(ALICE Collaboration)\} and S. Acharya and D. Adamov{\'a} and A. Adler and J. Adolfsson and \{Aglieri Rinella\}, G. and M. Agnello and N. Agrawal and Z. Ahammed and S. Ahmad and Ahn, \{S. U.\} and Z. Akbar and A. Akindinov and M. Al-Turany and Albuquerque, \{D. S.D.\} and D. Aleksandrov and B. Alessandro and Alfanda, \{H. M.\} and \{Alfaro Molina\}, R. and B. Ali and Y. Ali and A. Alici and N. Alizadehvandchali and A. Alkin and J. Alme and T. Alt and L. Altenkamper and I. Altsybeev and Anaam, \{M. N.\} and C. Andrei and D. Andreou and A. Andronic and M. Angeletti and V. Anguelov and T. Anti{\v c}i{\'c} and F. Antinori and P. Antonioli and N. Apadula and L. Aphecetche and H. Appelsh{\"a}user and S. Arcelli and R. Arnaldi and M. Arratia and Arsene, \{I. C.\} and M. Arslandok and A. Augustinus and R. Averbeck and S. Aziz and Azmi, \{M. D.\} and \{Bazo Alba\}, \{J. L.\} and Gago, \{A. M.\}",

note = "Publisher Copyright: {\textcopyright} 2021 CERN.",

year = "2021",

month = nov,

day = "12",

doi = "10.1103/PhysRevLett.127.202301",

language = "English",

volume = "127",

journal = "Physical Review Letters",

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T1 - Λc+ Production and Baryon-to-Meson Ratios in pp and p -Pb Collisions at sNN =5.02 TeV at the LHC

AU - (ALICE Collaboration)

AU - Acharya, S.

AU - Adamová, D.

AU - Adler, A.

AU - Adolfsson, J.

AU - Aglieri Rinella, G.

AU - Agnello, M.

AU - Agrawal, N.

AU - Ahammed, Z.

AU - Ahmad, S.

AU - Ahn, S. U.

AU - Akbar, Z.

AU - Akindinov, A.

AU - Al-Turany, M.

AU - Albuquerque, D. S.D.

AU - Aleksandrov, D.

AU - Alessandro, B.

AU - Alfanda, H. M.

AU - Alfaro Molina, R.

AU - Ali, B.

AU - Ali, Y.

AU - Alici, A.

AU - Alizadehvandchali, N.

AU - Alkin, A.

AU - Alme, J.

AU - Alt, T.

AU - Altenkamper, L.

AU - Altsybeev, I.

AU - Anaam, M. N.

AU - Andrei, C.

AU - Andreou, D.

AU - Andronic, A.

AU - Angeletti, M.

AU - Anguelov, V.

AU - Antičić, T.

AU - Antinori, F.

AU - Antonioli, P.

AU - Apadula, N.

AU - Aphecetche, L.

AU - Appelshäuser, H.

AU - Arcelli, S.

AU - Arnaldi, R.

AU - Arratia, M.

AU - Arsene, I. C.

AU - Arslandok, M.

AU - Augustinus, A.

AU - Averbeck, R.

AU - Aziz, S.

AU - Azmi, M. D.

AU - Bazo Alba, J. L.

AU - Gago, A. M.

PY - 2021/11/12

Y1 - 2021/11/12

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AB - The prompt production of the charm baryon Λc+ and the Λc+/D0 production ratios were measured at midrapidity with the ALICE detector in pp and p-Pb collisions at sNN=5.02 TeV. These new measurements show a clear decrease of the Λc+/D0 ratio with increasing transverse momentum (pT) in both collision systems in the range 2

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M3 - Article

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SN - 0031-9007

VL - 127

JO - Physical Review Letters

JF - Physical Review Letters

IS - 20

M1 - 202301

ER -

Λc+ Production and Baryon-to-Meson Ratios in pp and p -Pb Collisions at sNN =5.02 TeV at the LHC

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