Constraining hadronization mechanisms with Λc+/D0 production ratios in Pb–Pb collisions at sNN=5.02 TeV

ALICE Collaboration

doi:10.1016/j.physletb.2023.137796

Constraining hadronization mechanisms with Λ_c⁺/D⁰ production ratios in Pb–Pb collisions at s_NN=5.02 TeV

ALICE Collaboration

Physics Education

Variable Energy Cyclotron Centre India
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
Pavol Jozef Šafárik University
Indonesian Institute of Sciences
Alikhanov Institute for Theoretical and Experimental Physics
GSI Helmholtz Centre for Heavy Ion Research
Russian Research Centre Kurchatov Institute
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
Lawrence Berkeley National Laboratory
Nantes Université
University of Oslo
Yale University
Laboratoire de Physique des 2 Infinis Irène Joliot-Curie
Gangneung-Wonju National University

Research output: Contribution to journal › Journal article › peer-review

48 Scopus citations

Abstract

The production of prompt Λ_c⁺ baryons at midrapidity (|y|<0.5) was measured in central (0–10%) and mid-central (30–50%) Pb–Pb collisions at the center-of-mass energy per nucleon–nucleon pair s_NN=5.02 TeV with the ALICE detector. The results are more precise, more differential in centrality, and reach much lower transverse momentum (p_T=1 GeV/c) with respect to previous measurements performed by the ALICE, STAR, and CMS Collaborations in nucleus–nucleus collisions, allowing for an extrapolation down to p_T=0. The p_T-differential Λ_c⁺/D⁰ ratio is enhanced with respect to the pp measurement for 4<p_T<8 GeV/c by 3.7 standard deviations (σ), while the p_T-integrated ratios are compatible within 1σ. The observed trend is similar to that observed in the strange sector for the Λ/K_S⁰ ratio. Model calculations including coalescence or statistical hadronization for charm-hadron formation are compared with the data.

Original language	English
Article number	137796
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	839
DOIs	https://doi.org/10.1016/j.physletb.2023.137796
State	Published - 2023.04.10

Quacquarelli Symonds(QS) Subject Topics

Physics & Astronomy

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10.1016/j.physletb.2023.137796

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@article{002759af05fa42ce9a5f849590209d7d,

title = "Constraining hadronization mechanisms with Λc+/D0 production ratios in Pb{\textendash}Pb collisions at sNN=5.02 TeV",

abstract = "The production of prompt Λc+ baryons at midrapidity (|y|<0.5) was measured in central (0{\textendash}10\%) and mid-central (30{\textendash}50\%) Pb{\textendash}Pb collisions at the center-of-mass energy per nucleon{\textendash}nucleon pair sNN=5.02 TeV with the ALICE detector. The results are more precise, more differential in centrality, and reach much lower transverse momentum (pT=1 GeV/c) with respect to previous measurements performed by the ALICE, STAR, and CMS Collaborations in nucleus{\textendash}nucleus collisions, allowing for an extrapolation down to pT=0. The pT-differential Λc+/D0 ratio is enhanced with respect to the pp measurement for 4T<8 GeV/c by 3.7 standard deviations (σ), while the pT-integrated ratios are compatible within 1σ. The observed trend is similar to that observed in the strange sector for the Λ/KS0 ratio. Model calculations including coalescence or statistical hadronization for charm-hadron formation are compared with the data.",

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 I. Ahuja and Z. Akbar and A. Akindinov and M. Al-Turany and Alam, \{S. N.\} 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 G. Alocco and T. Alt and I. Altsybeev and Anaam, \{M. N.\} and C. Andrei and D. Andreou and A. Andronic and V. Anguelov and F. Antinori and P. Antonioli and C. Anuj and N. Apadula and L. Aphecetche and H. Appelsh{\"a}user and S. Arcelli and R. Arnaldi and Arsene, \{I. C.\} and M. Arslandok and A. Augustinus and R. Averbeck and S. Aziz and Azmi, \{M. D.\} and A. Badal{\`a} and Baek, \{Y. W.\} and Kim, \{E. J.\}",

note = "Publisher Copyright: {\textcopyright} 2023 European Organization for Nuclear Research",

year = "2023",

month = apr,

day = "10",

doi = "10.1016/j.physletb.2023.137796",

language = "English",

volume = "839",

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

issn = "0370-2693",

}

TY - JOUR

T1 - Constraining hadronization mechanisms with Λc+/D0 production ratios in Pb–Pb collisions at sNN=5.02 TeV

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 - Ahuja, I.

AU - Akbar, Z.

AU - Akindinov, A.

AU - Al-Turany, M.

AU - Alam, S. N.

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 - Alocco, G.

AU - Alt, T.

AU - Altsybeev, I.

AU - Anaam, M. N.

AU - Andrei, C.

AU - Andreou, D.

AU - Andronic, A.

AU - Anguelov, V.

AU - Antinori, F.

AU - Antonioli, P.

AU - Anuj, C.

AU - Apadula, N.

AU - Aphecetche, L.

AU - Appelshäuser, H.

AU - Arcelli, S.

AU - Arnaldi, R.

AU - Arsene, I. C.

AU - Arslandok, M.

AU - Augustinus, A.

AU - Averbeck, R.

AU - Aziz, S.

AU - Azmi, M. D.

AU - Badalà, A.

AU - Baek, Y. W.

AU - Kim, E. J.

PY - 2023/4/10

Y1 - 2023/4/10

N2 - The production of prompt Λc+ baryons at midrapidity (|y|<0.5) was measured in central (0–10%) and mid-central (30–50%) Pb–Pb collisions at the center-of-mass energy per nucleon–nucleon pair sNN=5.02 TeV with the ALICE detector. The results are more precise, more differential in centrality, and reach much lower transverse momentum (pT=1 GeV/c) with respect to previous measurements performed by the ALICE, STAR, and CMS Collaborations in nucleus–nucleus collisions, allowing for an extrapolation down to pT=0. The pT-differential Λc+/D0 ratio is enhanced with respect to the pp measurement for 4T<8 GeV/c by 3.7 standard deviations (σ), while the pT-integrated ratios are compatible within 1σ. The observed trend is similar to that observed in the strange sector for the Λ/KS0 ratio. Model calculations including coalescence or statistical hadronization for charm-hadron formation are compared with the data.

AB - The production of prompt Λc+ baryons at midrapidity (|y|<0.5) was measured in central (0–10%) and mid-central (30–50%) Pb–Pb collisions at the center-of-mass energy per nucleon–nucleon pair sNN=5.02 TeV with the ALICE detector. The results are more precise, more differential in centrality, and reach much lower transverse momentum (pT=1 GeV/c) with respect to previous measurements performed by the ALICE, STAR, and CMS Collaborations in nucleus–nucleus collisions, allowing for an extrapolation down to pT=0. The pT-differential Λc+/D0 ratio is enhanced with respect to the pp measurement for 4T<8 GeV/c by 3.7 standard deviations (σ), while the pT-integrated ratios are compatible within 1σ. The observed trend is similar to that observed in the strange sector for the Λ/KS0 ratio. Model calculations including coalescence or statistical hadronization for charm-hadron formation are compared with the data.

UR - https://www.scopus.com/pages/publications/85150826666

U2 - 10.1016/j.physletb.2023.137796

DO - 10.1016/j.physletb.2023.137796

M3 - Journal article

AN - SCOPUS:85150826666

SN - 0370-2693

VL - 839

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 - 137796

ER -

Constraining hadronization mechanisms with Λ_c⁺/D⁰ production ratios in Pb–Pb collisions at s_NN=5.02 TeV

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