Measurements of Chemical Potentials in Pb-Pb Collisions at sNN =5.02 TeV

(ALICE Collaboration)

doi:10.1103/PhysRevLett.133.092301

Measurements of Chemical Potentials in Pb-Pb Collisions at sNN =5.02 TeV

(ALICE Collaboration)

Chair of Experimentalphysik - Dense and Strange Hadronic Matter

LAIC, Université d'Auvergne
Nuclear Physics Institute of the Cas
European Organization for Nuclear Research
INFN Sez. di Torino
Istituto Nazionale di Fisica Nucleare, Sezione di Bologna
VECC Kolkata
Aligarh Muslim University
Korea Institute of Science and Technology Information
P. J. Safarik University
GSI Helmholtz Center
Central China Normal University
Universidad Nacional Autónoma de México
University of Houston
University of Bergen
Sezione INFN di Cagliari
Johann Wolfgang Goethe University
Istituto Nazionale di Fisica Nucleare, Sezione di Bari
Technical University of Munich
Benemerita Universidad Autonoma de Puebla
Horia Hulubei National Institute of Physics and Nuclear Engineering
University of Derby
University of Münster
Heidelberg University
Dipartimento di Fisica 'G. Galilei' and INFN
Lawrence Berkeley National Laboratory
l'institut du thorax
University of Grenoble Alpes
University of São Paulo
University of Oslo
Yale University
University of Tokyo
Laboratori Nazionali Del Sud
Sungkyunkwan University
Gangneung-Wonju National University
University of Science and Technology of China
Indian Institute of Technology Indore
University of Jammu
University Paris-Sud
Univ of Mining and Metallurgy
Bose Institute
University of Athens
Gauhati University
Wigner Research Centre for Physics
STFC Daresbury Laboratory
University of Liverpool
Lund University
The Indian Institute of Technology Bombay
Pontifical Catholic University of Peru San Miguel
Niels Bohr Institutet
Institut Pluridisciplinaire Hubert Curien
Universidad Autonoma de Sinaloa
Institute of Space Sciences
INFN, Laboratori Nazionali Di Frascati
Czech Technical University in Prague
University of Texas at Austin
Frankfurt Institute for Advanced Studies
University of Pavia
Istituto Nazionale di Fisica Nucleare, Sezione di Pavia
Oak Ridge National Laboratory
Pusan National University
University of Brescia
Politecnico di Bari
INFN- Sezione di Trieste
Stefan Meyer Institut für Subatomare Physik (SMI)
National Research Foundation
University of the Witwatersrand, Johannesburg
Henryk Niewodniczanski Institute of Nuclear Physics Polish Academy of Sciences
Sezione INFN di Roma La Sapienza
University Politehnica of Bucharest
University of Lyon
Homi Bhabha National Institute
University of Campinas
Max-Planck-Institut für Physik
Inha University
Science Park 105
Tsukuba University
Energy and Sustainable Economic Development (ENEA)
University of Birmingham
University of Eastern Piedmont
UFABC
University of California at Berkeley
Centro de Aplicaciones Tecnológicas y Desarrollo Nuclear
University of Cape Town
Warsaw Institute of Technology
Panjab University
Technical University of Košice
Comenius University
Hiroshima University
Politecnico di Torino
Saga University
Chicago State University
University of Kansas
UFRGS
University of Tennessee
Nagasaki Institute of Applied Science
Wayne State University
University of Split
the University of Utrecht
A.I. Alikhanyan National Science Laboratory (YerPhi)
Yonsei University
University of Jyväskylä
University of Bonn
Western Norway University of Applied Sciences
CINVESTAV
Ohio State University
COMSATS University Islamabad
BRIN
China Institute of Atomic Energy
Instituto de Ciencias Nucleares de la UNAM
Suranaree University of Technology
Institute of Experimental Physics Slovak Academy of Sciences
KTO Karatay University
Yildiz Technical University
University of Zagreb
Zentrum für Technologie und Transfer (ZTT)
Chonbuk National University
Sejong University
California Polytechnic State University
Sofia University
National Center for Nuclear Research (NCBJ)
Università di Catania
University of South-Eastern Norway
Fudan University
Wrocław University
Multimedia and Distributed Systems Laboratory
University of Foggia
University of Helsinki and Helsinki Institute of Physics
Chungbuk National University
China University of Geosciences
Creighton University
National Nuclear Research Center
University of Tübingen
Nara Women's University
Bogolyubov Institute for Theoretical Physics Nasu
Institute of Physics of the Czech Academy of Sciences

Research output: Contribution to journal › Article › peer-review

9 Scopus citations

Abstract

This Letter presents the most precise measurement to date of the matter-antimatter imbalance at midrapidity in Pb-Pb collisions at a center-of-mass energy per nucleon pair sNN=5.02 TeV. Using the Statistical Hadronization framework, it is possible to obtain the value of the electric charge and baryon chemical potentials, μQ=-0.18±0.90 MeV and μB=0.71±0.45 MeV, with unprecedented precision. A centrality-differential study of the antiparticle-to-particle yield ratios of charged pions, protons, ω baryons, and light (hyper)nuclei is performed. These results indicate that the system created in Pb-Pb collisions at the LHC is on average baryon-free and electrically neutral at midrapidity.

Original language	English
Article number	092301
Journal	Physical Review Letters
Volume	133
Issue number	9
DOIs	https://doi.org/10.1103/PhysRevLett.133.092301
State	Published - 30 Aug 2024

Access to Document

10.1103/PhysRevLett.133.092301

Cite this

@article{e4c168fb9368499a89b62e28176d9521,

title = "Measurements of Chemical Potentials in Pb-Pb Collisions at sNN =5.02 TeV",

abstract = "This Letter presents the most precise measurement to date of the matter-antimatter imbalance at midrapidity in Pb-Pb collisions at a center-of-mass energy per nucleon pair sNN=5.02 TeV. Using the Statistical Hadronization framework, it is possible to obtain the value of the electric charge and baryon chemical potentials, μQ=-0.18±0.90 MeV and μB=0.71±0.45 MeV, with unprecedented precision. A centrality-differential study of the antiparticle-to-particle yield ratios of charged pions, protons, ω baryons, and light (hyper)nuclei is performed. These results indicate that the system created in Pb-Pb collisions at the LHC is on average baryon-free and electrically neutral at midrapidity.",

author = "\{(ALICE Collaboration)\} and S. Acharya and D. Adamov{\'a} and \{Aglieri Rinella\}, G. and L. Aglietta and M. Agnello and N. Agrawal and Z. Ahammed and S. Ahmad and Ahn, \{S. U.\} and I. Ahuja and A. Akindinov 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 N. Alizadehvandchali and A. Alkin and J. Alme and G. Alocco and T. Alt and Altamura, \{A. R.\} and I. Altsybeev and Alvarado, \{J. R.\} and Anaam, \{M. N.\} 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 L. Aphecetche and H. Appelsh{\"a}user and C. Arata and S. Arcelli and M. Aresti 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 A. Badal{\`a} and L. Fabbietti",

note = "Publisher Copyright: {\textcopyright} 2024 CERN. ",

year = "2024",

month = aug,

day = "30",

doi = "10.1103/PhysRevLett.133.092301",

language = "English",

volume = "133",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "9",

}

TY - JOUR

T1 - Measurements of Chemical Potentials in Pb-Pb Collisions at sNN =5.02 TeV

AU - (ALICE Collaboration)

AU - Acharya, S.

AU - Adamová, D.

AU - Aglieri Rinella, G.

AU - Aglietta, L.

AU - Agnello, M.

AU - Agrawal, N.

AU - Ahammed, Z.

AU - Ahmad, S.

AU - Ahn, S. U.

AU - Ahuja, I.

AU - Akindinov, A.

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 - Alizadehvandchali, N.

AU - Alkin, A.

AU - Alme, J.

AU - Alocco, G.

AU - Alt, T.

AU - Altamura, A. R.

AU - Altsybeev, I.

AU - Alvarado, J. R.

AU - Anaam, M. N.

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 - Aphecetche, L.

AU - Appelshäuser, H.

AU - Arata, C.

AU - Arcelli, S.

AU - Aresti, M.

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 - Badalà, A.

AU - Fabbietti, L.

PY - 2024/8/30

Y1 - 2024/8/30

N2 - This Letter presents the most precise measurement to date of the matter-antimatter imbalance at midrapidity in Pb-Pb collisions at a center-of-mass energy per nucleon pair sNN=5.02 TeV. Using the Statistical Hadronization framework, it is possible to obtain the value of the electric charge and baryon chemical potentials, μQ=-0.18±0.90 MeV and μB=0.71±0.45 MeV, with unprecedented precision. A centrality-differential study of the antiparticle-to-particle yield ratios of charged pions, protons, ω baryons, and light (hyper)nuclei is performed. These results indicate that the system created in Pb-Pb collisions at the LHC is on average baryon-free and electrically neutral at midrapidity.

AB - This Letter presents the most precise measurement to date of the matter-antimatter imbalance at midrapidity in Pb-Pb collisions at a center-of-mass energy per nucleon pair sNN=5.02 TeV. Using the Statistical Hadronization framework, it is possible to obtain the value of the electric charge and baryon chemical potentials, μQ=-0.18±0.90 MeV and μB=0.71±0.45 MeV, with unprecedented precision. A centrality-differential study of the antiparticle-to-particle yield ratios of charged pions, protons, ω baryons, and light (hyper)nuclei is performed. These results indicate that the system created in Pb-Pb collisions at the LHC is on average baryon-free and electrically neutral at midrapidity.

UR - https://www.scopus.com/pages/publications/85203129208

U2 - 10.1103/PhysRevLett.133.092301

DO - 10.1103/PhysRevLett.133.092301

M3 - Article

AN - SCOPUS:85203129208

SN - 0031-9007

VL - 133

JO - Physical Review Letters

JF - Physical Review Letters

IS - 9

M1 - 092301

ER -

Measurements of Chemical Potentials in Pb-Pb Collisions at sNN =5.02 TeV

Abstract

Access to Document

Other files and links

Fingerprint

Cite this