Multiplicity dependence of and production in pp collisions at TeV

The ALICE collaboration

doi:10.1007/JHEP12(2025)038

Multiplicity dependence of and production in pp collisions at TeV

The ALICE collaboration

Sección de Física

CERN
University of Houston
National Institute for Nuclear Physics
Variable Energy Cyclotron Centre
Aligarh Muslim University
Pavol Jozef Šafárik University
National Research and Innovation Agency Republic of Indonesia
Goethe University Frankfurt
GSI Helmholtz Centre for Heavy Ion Research
Central China Normal University
Universidad Nacional Autónoma de México
Sungkyunkwan University
University of Bergen
Technical University of Munich
Horia Hulubei National Institute of Physics and Nuclear Engineering
University of Derby
University of Münster
Heidelberg University
Lawrence Berkeley National Laboratory
Universidade de São Paulo
University of Oslo
Yale University
The University of Tokyo
Wayne State University
Kangwon National University
University of Science and Technology of China
Indian Institute of Technology Indore
University of Jammu
Université Paris-Saclay
AGH University of Krakow
University of Kansas
National and Kapodistrian University of Athens
Gauhati University
Wigner Research Centre for Physics
Nantes Université
Université Clermont Auvergne
Indian Institute of Technology Bombay
University of Copenhagen
Université de Strasbourg
Universidad Autonoma de Sinaloa
Benemerita Universidad Autonoma de Puebla
Panjab University
Faculty of Nuclear Sciences and Physical Engineering
Czech Academy of Sciences
Bose Institute
Oak Ridge National Laboratory
Pusan National University
University of Brescia
Institute for Space Sciences
Polytechnic University of Bari
Sofia University
STFC Daresbury Laboratory
Austrian Academy of Sciences
National Research Foundation
University of the Witwatersrand
University of Birmingham
Pontificia Universidad Católica del Perú
National University of Science and Technology POLITEHNICA Bucharest
Warsaw University of Technology
University of Liverpool
Fudan University
Université de Lyon
Max Planck Institute for Physics (Werner Heisenberg Institute)
Inha University
Czech Technical University in Prague
National Institute for Subatomic Physics
Lund University
University of Tsukuba
Agenzia nazionale per le nuove tecnologie, l'energia e lo sviluppo economico sostenibile
Université Grenoble Alpes
University of Eastern Piedmont
Universidade Federal do ABC
University of Pavia
University of California at Berkeley
University of Foggia
University of Bonn
Comenius University
Hiroshima University
Polytechnic University of Turin
University of Texas at Austin
Saga University
Homi Bhabha National Institute
Chicago State University
Universidade Federal do Rio Grande do Sul
University of Tennessee, Knoxville
University of Split
Utrecht University
A. Alikhanian Yerevan Institute of Physics
China National Nuclear Corporation
Nagasaki Institute of Applied Science
Yonsei University
University of South-Eastern Norway
University of Jyväskylä
Faculty of Technology
Centro de Investigacion y de Estudios Avanzados del Instituto Politécnico Nacional
China University of Geosciences, Wuhan
Ohio State University
Technical University of Kosice
Universidade Estadual de Campinas
Suranaree University of Technology
Slovak Academy of Sciences
Yildiz Technical University
Jeonbuk National University
Sejong University
California Polytechnic State University, San Luis Obispo
University of Zagreb
Henryk Niewodniczanski Institute of Nuclear Physics of the Polish Academy of Sciences
National Centre for Nuclear Research
Dipartimento di Fisica e Astronomia dell’Università and Sezione INFN
Centro de Aplicaciones Tecnológicas y Desarrollo Nuclear
University of Messina
University of Helsinki
Chungbuk National University
Creighton University
University of Wrocław
National Nuclear Research Center
Korea Institute of Science and Technology Information
University of Tübingen
Nara Women's University
NASU - Bogolyubov Institute for Theoretical Physics

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2 Citas (Scopus)

Resumen

The first measurement at midrapidity (|y| < 0.5) of the production yield of the strange-charm baryons and as a function of transverse momentum (p_T) in different charged-particle multiplicity classes in proton-proton collisions at TeV with the ALICE experiment at the LHC is reported. The baryon is reconstructed via the decay channel in the range 4 < p_T< 12 GeV/c, while the baryon is reconstructed via both the and decay channels in the range 2 < p_T< 12 GeV/c. The baryon-to-meson and the baryon-to-baryon production yield ratios show no significant dependence on multiplicity. In addition, the observed yield ratios are not described by theoretical predictions that model charm-quark fragmentation based on measurements at e⁺e⁻ and e⁻p colliders, indicating differences in the charm-baryon production mechanism in pp collisions. A comparison with different event generators and tunings, including different modelling of the hadronisation process, is also discussed. Moreover, the branching-fraction ratio of is measured as 0.825 ± 0.094 (stat.) ± 0.081 (syst.). This value supersedes the previous ALICE measurement, improving the statistical precision by a factor of 1.6.

Idioma original	Inglés
Número de artículo	38
Publicación	Journal of High Energy Physics
Volumen	2025
N.º	12
DOI	https://doi.org/10.1007/JHEP12(2025)038
Estado	Publicada - dic. 2025

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@article{923ade0eb78c4796a4c983a1f5163811,

title = "Multiplicity dependence of and production in pp collisions at TeV",

abstract = "The first measurement at midrapidity (|y| < 0.5) of the production yield of the strange-charm baryons and as a function of transverse momentum (pT) in different charged-particle multiplicity classes in proton-proton collisions at TeV with the ALICE experiment at the LHC is reported. The baryon is reconstructed via the decay channel in the range 4 < pT< 12 GeV/c, while the baryon is reconstructed via both the and decay channels in the range 2 < pT< 12 GeV/c. The baryon-to-meson and the baryon-to-baryon production yield ratios show no significant dependence on multiplicity. In addition, the observed yield ratios are not described by theoretical predictions that model charm-quark fragmentation based on measurements at e+e− and e−p colliders, indicating differences in the charm-baryon production mechanism in pp collisions. A comparison with different event generators and tunings, including different modelling of the hadronisation process, is also discussed. Moreover, the branching-fraction ratio of is measured as 0.825 ± 0.094 (stat.) ± 0.081 (syst.). This value supersedes the previous ALICE measurement, improving the statistical precision by a factor of 1.6.",

keywords = "Charm Physics, Hadron-Hadron Scattering, Proton-Proton Scattering",

author = "\{The ALICE collaboration\} and Abualrob, \{I. J.\} and S. Acharya and \{Aglieri Rinella\}, G. and L. Aglietta and M. Agnello and N. Agrawal and Z. Ahammed and S. Ahmad and I. Ahuja and Akbar, \{Z. U.L.\} and A. Akindinov and V. Akishina and M. Al-Turany and D. Aleksandrov and B. Alessandro and Alfanda, \{H. M.\} and \{Alfaro Molina\}, R. and B. Ali and A. Alici and A. Alkin and J. Alme and G. Alocco and T. Alt and Altamura, \{A. R.\} and I. Altsybeev and C. Andrei and N. Andreou and A. Andronic and E. Andronov and V. Anguelov and F. Antinori and P. Antonioli and N. Apadula and H. Appelsh{\"a}user and S. Arcelli and R. Arnaldi and Arneiro, \{J. G.M.C.A.\} and Arsene, \{I. C.\} and M. Arslandok and A. Augustinus and R. Averbeck and Azmi, \{M. D.\} and H. Baba and Babu, \{A. R.J.\} and A. Badal{\`a} and J. Bae and Y. Bae and Baek, \{Y. W.\} and \{Bazo Alba\}, \{J. L.\} and Gago, \{A. M.\}",

note = "Publisher Copyright: {\textcopyright} The Author(s) 2025.",

year = "2025",

month = dec,

doi = "10.1007/JHEP12(2025)038",

language = "English",

volume = "2025",

journal = "Journal of High Energy Physics",

issn = "1126-6708",

number = "12",

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TY - JOUR

T1 - Multiplicity dependence of and production in pp collisions at TeV

AU - The ALICE collaboration

AU - Abualrob, I. J.

AU - Acharya, S.

AU - Aglieri Rinella, G.

AU - Aglietta, L.

AU - Agnello, M.

AU - Agrawal, N.

AU - Ahammed, Z.

AU - Ahmad, S.

AU - Ahuja, I.

AU - Akbar, Z. U.L.

AU - Akindinov, A.

AU - Akishina, V.

AU - Al-Turany, M.

AU - Aleksandrov, D.

AU - Alessandro, B.

AU - Alfanda, H. M.

AU - Alfaro Molina, R.

AU - Ali, B.

AU - Alici, A.

AU - Alkin, A.

AU - Alme, J.

AU - Alocco, G.

AU - Alt, T.

AU - Altamura, A. R.

AU - Altsybeev, I.

AU - Andrei, C.

AU - Andreou, N.

AU - Andronic, A.

AU - Andronov, E.

AU - Anguelov, V.

AU - Antinori, F.

AU - Antonioli, P.

AU - Apadula, N.

AU - Appelshäuser, H.

AU - Arcelli, S.

AU - Arnaldi, R.

AU - Arneiro, J. G.M.C.A.

AU - Arsene, I. C.

AU - Arslandok, M.

AU - Augustinus, A.

AU - Averbeck, R.

AU - Azmi, M. D.

AU - Baba, H.

AU - Babu, A. R.J.

AU - Badalà, A.

AU - Bae, J.

AU - Bae, Y.

AU - Baek, Y. W.

AU - Bazo Alba, J. L.

AU - Gago, A. M.

PY - 2025/12

Y1 - 2025/12

N2 - The first measurement at midrapidity (|y| < 0.5) of the production yield of the strange-charm baryons and as a function of transverse momentum (pT) in different charged-particle multiplicity classes in proton-proton collisions at TeV with the ALICE experiment at the LHC is reported. The baryon is reconstructed via the decay channel in the range 4 < pT< 12 GeV/c, while the baryon is reconstructed via both the and decay channels in the range 2 < pT< 12 GeV/c. The baryon-to-meson and the baryon-to-baryon production yield ratios show no significant dependence on multiplicity. In addition, the observed yield ratios are not described by theoretical predictions that model charm-quark fragmentation based on measurements at e+e− and e−p colliders, indicating differences in the charm-baryon production mechanism in pp collisions. A comparison with different event generators and tunings, including different modelling of the hadronisation process, is also discussed. Moreover, the branching-fraction ratio of is measured as 0.825 ± 0.094 (stat.) ± 0.081 (syst.). This value supersedes the previous ALICE measurement, improving the statistical precision by a factor of 1.6.

AB - The first measurement at midrapidity (|y| < 0.5) of the production yield of the strange-charm baryons and as a function of transverse momentum (pT) in different charged-particle multiplicity classes in proton-proton collisions at TeV with the ALICE experiment at the LHC is reported. The baryon is reconstructed via the decay channel in the range 4 < pT< 12 GeV/c, while the baryon is reconstructed via both the and decay channels in the range 2 < pT< 12 GeV/c. The baryon-to-meson and the baryon-to-baryon production yield ratios show no significant dependence on multiplicity. In addition, the observed yield ratios are not described by theoretical predictions that model charm-quark fragmentation based on measurements at e+e− and e−p colliders, indicating differences in the charm-baryon production mechanism in pp collisions. A comparison with different event generators and tunings, including different modelling of the hadronisation process, is also discussed. Moreover, the branching-fraction ratio of is measured as 0.825 ± 0.094 (stat.) ± 0.081 (syst.). This value supersedes the previous ALICE measurement, improving the statistical precision by a factor of 1.6.

KW - Charm Physics

KW - Hadron-Hadron Scattering

KW - Proton-Proton Scattering

UR - https://www.scopus.com/pages/publications/105026572878

U2 - 10.1007/JHEP12(2025)038

DO - 10.1007/JHEP12(2025)038

M3 - Article

AN - SCOPUS:105026572878

SN - 1126-6708

VL - 2025

JO - Journal of High Energy Physics

JF - Journal of High Energy Physics

IS - 12

M1 - 38

ER -

Multiplicity dependence of and production in pp collisions at TeV

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