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

被引：1

作者：

Acharya, S. ^{[142
]}

Adamova, D. ^{[98
]}

Rinella, G. Aglieri ^{[44
]}

Aglietta, L. ^{[29
,30
]}

Agnello, M. ^{[39
,40
]}

Agrawal, N. ^{[31
,32
]}

Ahammed, Z. ^{[150
]}

Ahmad, S. ^{[18
]}

Ahn, S. U. ^{[83
]}

Ahuja, I. ^{[49
]}

Akindinov, A. ^{[151
,156
]}

Al-Turany, M. ^{[111
,112
]}

Aleksandrov, D. ^{[156
]}

Alessandro, B. ^{[68
]}

Alfanda, H. M. ^{[7
]}

Alfaro Molina, R. ^{[79
]}

Ali, B. ^{[18
]}

Alici, A. ^{[31
,32
]}

Alizadehvandchali, N. ^{[131
]}

Alkin, A. ^{[44
]}

Alme, J. ^{[23
]}

Alocco, G. ^{[64
]}

Alt, T. ^{[76
]}

Altamura, A. R. ^{[62
]}

Altsybeev, I. ^{[108
]}

Alvarado, J. R. ^{[56
]}

Anaam, M. N. ^{[7
]}

Andrei, C. ^{[57
]}

Andreou, N. ^{[130
]}

Andronic, A. ^{[141
]}

Andronov, E. ^{[156
]}

Anguelov, V. ^{[107
]}

Antinori, F. ^{[66
]}

Antonioli, P. ^{[63
]}

Apadula, N. ^{[86
]}

Aphecetche, L. ^{[118
]}

Appelshaeuser, H. ^{[76
]}

Arata, C. ^{[85
]}

Arcelli, S. ^{[31
,32
]}

Aresti, M. ^{[25
,26
]}

Arnaldi, R. ^{[68
]}

Arneiro, J. G. M. C. A. ^{[125
]}

Arsene, I. C. ^{[22
]}

Arslandok, M. ^{[153
]}

Augustinus, A. ^{[44
]}

Averbeck, R. ^{[111
,112
]}

Azmi, M. D. ^{[18
]}

Baba, H. ^{[139
]}

Badala, A. ^{[65
]}

Bae, J. ^{[119
]}

机构：

[1] Yerevan Phys Inst Fdn, AI Alikhanyan Natl Sci Lab, Yerevan, Armenia

[2] AGH Univ Krakow, Krakow, Poland

[3] Natl Acad Sci Ukraine, Bogolyubov Inst Theoret Phys, Kiev, Ukraine

[4] Ctr Astroparticle Phys & Space Sci CAPSS, Bose Inst, Dept Phys, Kolkata, India

[5] Ctr Astroparticle Phys & Space Sci CAPSS, Kolkata, India

[6] Calif Polytech State Univ, Pasadena, CA USA

[7] Cent China Normal Univ, Wuhan, Peoples R China

[8] Ctr Aplicaciones Tecnol & Desarrollo Nucl CEADEN, Havana, Cuba

[9] Ctr Invest & Estudios Avanzados CINVESTAV, Mexico City, DF, Mexico

[10] Ctr Invest & Estudios Avanzados CINVESTAV, Merida, Mexico

[11] Chicago State Univ, Chicago, IL USA

[12] China Inst Atom Energy, Beijing, Peoples R China

[13] China Univ Geosci, Wuhan, Peoples R China

[14] Chungbuk Natl Univ, Cheongju, South Korea

[15] Comenius Univ, Fac Math Phys & Informat, Bratislava, Slovakia

[16] COMSATS Univ Islamabad, Bratislava, Slovakia

[17] Creighton Univ, Omaha, NE USA

[18] Aligarh Muslim Univ, Dept Phys, Aligarh, Uttar Pradesh, India

[19] Pusan Natl Univ, Dept Phys, Pusan, South Korea

[20] Sejong Univ, Dept Phys, Seoul, South Korea

[21] Univ Calif Berkeley, Dept Phys, Berkeley, CA USA

[22] Univ Oslo, Dept Phys, Oslo, Norway

[23] Univ Bergen, Dept Phys & Technol, Bergen, Norway

[24] Univ Pavia, Dipartimento Fis, Pavia, Italy

[25] Univ Cagliari, Dipartimento Fis, Cagliari, Italy

[26] Sezione Ist Nazl Fis Nucl, Cagliari, Italy

[27] Univ Trieste, Dipartimento Fis, Trieste, Italy

[28] Sezione Ist Nazl Fis Nucl, Trieste, Italy

[29] Univ Turin, Dipartimento Fis, Turin, Italy

[30] Sezione Ist Nazl Fis Nucl, Turin, Italy

[31] Univ Bologna, Dipartimento Fis & Astron, Bologna, Italy

[32] Sezione Ist Nazl Fis Nucl, Bologna, Italy

[33] Univ Catania, Dipartimento Fis & Astron, Catania, Italy

[34] Sezione Ist Nazl Fis Nucl, Catania, Italy

[35] Univ Padua, Dipartimento Fis & Astron, Padua, Italy

[36] Sezione Ist Nazl Fis Nucl, Padua, Italy

[37] Univ Salerno, Dipartimento Fis ER Caianiello, Salerno, Italy

[38] Grp Collegato INFN, Salerno, Italy

[39] Politecn Torino, Dipartimento DISAT, Turin, Italy

[40] Sezione Ist Nazl Fis Nucl, Turin, Italy

[41] Univ Messina, Dipartimento Sci MIFT, Messina, Italy

[42] Dipartimento Interateneo Fis M Merlin, Bari, Italy

[43] Sezione Ist Nazl Fis Nucl, Bari, Italy

[44] CERN, European Org Nucl Res, Geneva, Switzerland

[45] Univ Split, Fac Elect Engn Mech Engn & Naval Architecture, Split, Croatia

[46] Western Norway Univ Appl Sci, Fac Engn & Sci, Bergen, Norway

[47] Czech Tech Univ, Fac Nucl Sci & Phys Engn, Prague, Czech Republic

[48] Univ Sofia, Fac Phys, Sofia, Bulgaria

[49] Safarik Univ, Fac Sci, Kosice, Slovakia

[50] Goethe Univ Frankfurt, Frankfurt Inst Adv Studies, Frankfurt, Germany

来源：

PHYSICAL REVIEW LETTERS | 2024年 / 133卷 / 09期

基金：

美国能源部; 欧洲研究理事会; 日本学术振兴会; 芬兰科学院; 奥地利科学基金会; 新加坡国家研究基金会; 中国国家自然科学基金; 巴西圣保罗研究基金会; 瑞典研究理事会;

关键词：

NUCLEUS-NUCLEUS COLLISIONS; STRANGE BARYON PRODUCTION; HEAVY-ION COLLISIONS; PLUS AU COLLISIONS; EXCITATION-FUNCTION; HADRON-PRODUCTION; AU+AU COLLISIONS; PARTICLE RATIOS; KAON PRODUCTION; CROSS-SECTIONS;

D O I：

10.1103/PhysRevLett.133.092301

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

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 root s(NN) = 5.02 TeV. Using the Statistical Hadronization framework, it is possible to obtain the value of the electric charge and baryon chemical potentials, mu(Q) = -0.18 +/- 0.90 MeV and mu(B) = 0.71 +/- 0.45 MeV, with unprecedented precision. A centrality-differential study of the antiparticle-to-particle yield ratios of charged pions, protons, Omega 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.

引用

页数：15

共 50 条

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