https://doi.org/10.1140/epjc/s10052-019-6711-x
Regular Article - Experimental Physics
Relative particle yield fluctuations in 
collisions at 
1
A.I. Alikhanyan National Science Laboratory (Yerevan Physics Institute) Foundation, Yerevan, Armenia
2
Benemérita Universidad Autónoma de Puebla, Puebla, Mexico
3
Bogolyubov Institute for Theoretical Physics, Kiev, Ukraine
4
Bose Institute, Department of Physics and Centre for Astroparticle Physics and Space Science (CAPSS), Kolkata, India
5
Budker Institute for Nuclear Physics, Novosibirsk, Russia
6
California Polytechnic State University, San Luis Obispo, CA, USA
7
Central China Normal University, Wuhan, China
8
Centre de Calcul de l’IN2P3, Villeurbanne, Lyon, France
9
Centro de Aplicaciones Tecnológicas y Desarrollo Nuclear (CEADEN), Havana, Cuba
10
Centro de Investigaciones Energéticas Medioambientales y Tecnológicas (CIEMAT), Madrid, Spain
11
Centro de Investigación y de Estudios Avanzados (CINVESTAV), Mexico City and Mérida, Mexico
12
Centro Fermi-Museo Storico della Fisica e Centro Studi e Ricerche “Enrico Fermi’, Rome, Italy
13
Chicago State University, Chicago, IL, USA
14
China Institute of Atomic Energy, Beijing, China
15
COMSATS Institute of Information Technology (CIIT), Islamabad, Pakistan
16
Departamento de Física de Partículas and IGFAE, Universidad de Santiago de Compostela, Santiago de Compostela, Spain
17
Department of Physics, Aligarh Muslim University, Aligarh, India
18
Department of Physics, Ohio State University, Columbus, OH, USA
19
Department of Physics, Pusan National University, Pusan, Republic of Korea
20
Department of Physics, Sejong University, Seoul, Republic of Korea
21
Department of Physics, University of Oslo, Oslo, Norway
22
Department of Physics and Technology, University of Bergen, Bergen, Norway
23
Dipartimento di Fisica dell’Università ’La Sapienza’ and Sezione INFN, Rome, Italy
24
Dipartimento di Fisica dell’Università and Sezione INFN, Cagliari, Italy
25
Dipartimento di Fisica dell’Università and Sezione INFN, Trieste, Italy
26
Dipartimento di Fisica dell’Università and Sezione INFN, Turin, Italy
27
Dipartimento di Fisica e Astronomia dell’Università and Sezione INFN, Bologna, Italy
28
Dipartimento di Fisica e Astronomia dell’Università and Sezione INFN, Catania, Italy
29
Dipartimento di Fisica e Astronomia dell’Università and Sezione INFN, Padova, Italy
30
Dipartimento di Fisica ‘E.R. Caianiello’ dell’Università and Gruppo Collegato INFN, Salerno, Italy
31
Dipartimento DISAT del Politecnico and Sezione INFN, Turin, Italy
32
Dipartimento di Scienze e Innovazione Tecnologica dell’Università del Piemonte Orientale and INFN Sezione di Torino, Alessandria, Italy
33
Dipartimento Interateneo di Fisica ‘M. Merlin’ and Sezione INFN, Bari, Italy
34
Division of Experimental High Energy Physics, University of Lund, Lund, Sweden
35
European Organization for Nuclear Research (CERN), Geneva, Switzerland
36
Excellence Cluster Universe, Technische Universität München, Munich, Germany
37
Faculty of Engineering, Bergen University College, Bergen, Norway
38
Faculty of Mathematics, Physics and Informatics, Comenius University, Bratislava, Slovakia
39
Faculty of Nuclear Sciences and Physical Engineering, Czech Technical University in Prague, Prague, Czech Republic
40
Faculty of Science, P.J. Šafárik University, Košice, Slovakia
41
Faculty of Technology, Buskerud and Vestfold University College, Tonsberg, Norway
42
Frankfurt Institute for Advanced Studies, Johann Wolfgang Goethe-Universität Frankfurt, Frankfurt, Germany
43
Gangneung-Wonju National University, Gangneung, Republic of Korea
44
Department of Physics, Gauhati University, Guwahati, India
45
Helmholtz-Institut für Strahlen- und Kernphysik, Rheinische Friedrich-Wilhelms-Universität Bonn, Bonn, Germany
46
Helsinki Institute of Physics (HIP), Helsinki, Finland
47
Hiroshima University, Hiroshima, Japan
48
Indian Institute of Technology Bombay (IIT), Mumbai, India
49
Indian Institute of Technology Indore, Indore, India
50
Indonesian Institute of Sciences, Jakarta, Indonesia
51
INFN, Laboratori Nazionali di Frascati, Frascati, Italy
52
INFN, Sezione di Bari, Bari, Italy
53
INFN, Sezione di Bologna, Bologna, Italy
54
INFN, Sezione di Cagliari, Cagliari, Italy
55
INFN, Sezione di Catania, Catania, Italy
56
INFN, Sezione di Padova, Padova, Italy
57
INFN, Sezione di Roma, Rome, Italy
58
INFN, Sezione di Torino, Turin, Italy
59
INFN, Sezione di Trieste, Trieste, Italy
60
Inha University, Incheon, Republic of Korea
61
Institut de Physique Nucléaire d’Orsay (IPNO), Université Paris-Sud, CNRS-IN2P3, Orsay, France
62
Institute for Nuclear Research, Academy of Sciences, Moscow, Russia
63
Institute for Subatomic Physics of Utrecht University, Utrecht, Netherlands
64
Institute for Theoretical and Experimental Physics, Moscow, Russia
65
Institute of Experimental Physics, Slovak Academy of Sciences, Košice, Slovakia
66
Institute of Physics, Academy of Sciences of the Czech Republic, Prague, Czech Republic
67
Institute of Physics, Bhubaneswar, India
68
Institute of Space Science (ISS), Bucharest, Romania
69
Institut für Kernphysik, Johann Wolfgang Goethe-Universität Frankfurt, Frankfurt, Germany
70
Institut für Kernphysik, Johann Wolfgang Goethe-Universität Frankfurt, Frankfurt, Germany
71
Institut für Kernphysik, Westfälische Wilhelms-Universität Münster, Münster, Germany
72
Instituto de Ciencias Nucleares, Universidad Nacional Autónoma de México, Mexico City, Mexico
73
Instituto de Física, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Brazil
74
Instituto de Física, Universidad Nacional Autónoma de México, Mexico City, Mexico
75
IRFU, CEA, Université Paris-Saclay, Saclay, France
76
iThemba LABS, National Research Foundation, Somerset West, South Africa
77
Joint Institute for Nuclear Research (JINR), Dubna, Russia
78
Konkuk University, Seoul, Republic of Korea
79
Korea Institute of Science and Technology Information, Daejeon, Republic of Korea
80
KTO Karatay University, Konya, Turkey
81
Laboratoire de Physique Subatomique et de Cosmologie, Université Grenoble-Alpes, CNRS-IN2P3, Grenoble, France
82
Lawrence Berkeley National Laboratory, Berkeley, CA, USA
83
Moscow Engineering Physics Institute, Moscow, Russia
84
Nagasaki Institute of Applied Science, Nagasaki, Japan
85
Physics Department, National and Kapodistrian University of Athens, Athens, Greece
86
National Centre for Nuclear Studies, Warsaw, Poland
87
National Institute for Physics and Nuclear Engineering, Bucharest, Romania
88
National Institute of Science Education and Research, HBNI, Jatni, India
89
National Nuclear Research Center, Baku, Azerbaijan
90
National Research Centre Kurchatov Institute, Moscow, Russia
91
Niels Bohr Institute, University of Copenhagen, Copenhagen, Denmark
92
Nikhef, Nationaal instituut voor subatomaire fysica, Amsterdam, Netherlands
93
Nuclear Physics Group, STFC Daresbury Laboratory, Daresbury, United Kingdom
94
Nuclear Physics Institute, Academy of Sciences of the Czech Republic, Řež u Prahy, Czech Republic
95
Oak Ridge National Laboratory, Oak Ridge, TN, USA
96
Petersburg Nuclear Physics Institute, Gatchina, Russia
97
Physics Department, Creighton University, Omaha, NE, USA
98
Physics Department, Faculty of science, University of Zagreb, Zagreb, Croatia
99
Physics Department, Panjab University, Chandigarh, India
100
Physics Department, University of Cape Town, Cape Town, South Africa
101
Physics Department, University of Jammu, Jammu, India
102
Physics Department, University of Rajasthan, Jaipur, India
103
Physikalisches Institut, Eberhard-Karls-Universität Tübingen, Tübingen, Germany
104
Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg, Heidelberg, Germany
105
Physik Department, Technische Universität München, Munich, Germany
106
Research Division and ExtreMe Matter Institute EMMI, GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt, Germany
107
Rudjer Bošković Institute, Zagreb, Croatia
108
Russian Federal Nuclear Center (VNIIEF), Sarov, Russia
109
Saha Institute of Nuclear Physics, Kolkata, India
110
School of Physics and Astronomy, University of Birmingham, Birmingham, United Kingdom
111
Sección Física, Departamento de Ciencias, Pontificia Universidad Católica del Perú, Lima, Peru
112
SSC IHEP of NRC Kurchatov institute, Protvino, Russia
113
Stefan Meyer Institut für Subatomare Physik (SMI), Vienna, Austria
114
SUBATECH, IMT Atlantique, Université de Nantes, CNRS-IN2P3, Nantes, France
115
Suranaree University of Technology, Nakhon Ratchasima, Thailand
116
Technical University of Košice, Košice, Slovakia
117
Technical University of Split FESB, Split, Croatia
118
The Henryk Niewodniczanski Institute of Nuclear Physics, Polish Academy of Sciences, Cracow, Poland
119
Physics Department, The University of Texas at Austin, Austin, TX, USA
120
Universidad Autónoma de Sinaloa, Culiacán, Mexico
121
Universidade de São Paulo (USP), São Paulo, Brazil
122
Universidade Estadual de Campinas (UNICAMP), Campinas, Brazil
123
Universidade Federal do ABC, Santo Andre, Brazil
124
University of Houston, Houston, TX, USA
125
University of Jyväskylä, Jyväskylä, Finland
126
University of Liverpool, Liverpool, United Kingdom
127
University of Tennessee, Knoxville, TN, USA
128
University of the Witwatersrand, Johannesburg, South Africa
129
University of Tokyo, Tokyo, Japan
130
University of Tsukuba, Tsukuba, Japan
131
Université Clermont Auvergne, CNRS/IN2P3, LPC, Clermont-Ferrand, France
132
Université de Lyon, Université Lyon 1, CNRS/IN2P3, IPN-Lyon, Villeurbanne, Lyon, France
133
Université de Strasbourg, CNRS, IPHC UMR 7178, Strasbourg, France
134
Università degli Studi di Pavia, Pavia, Italy
135
Università di Brescia, Brescia, Italy
136
V. Fock Institute for Physics, St. Petersburg State University, St. Petersburg, Russia
137
Variable Energy Cyclotron Centre, Kolkata, India
138
Warsaw University of Technology, Warsaw, Poland
139
Wayne State University, Detroit, MI, USA
140
Wigner Research Centre for Physics, Hungarian Academy of Sciences, Budapest, Hungary
141
Yale University, New Haven, CT, USA
142
Yonsei University, Seoul, Republic of Korea
143
Zentrum für Technologietransfer und Telekommunikation (ZTT), Fachhochschule Worms, Worms, Germany
144
CERN, 1211, Geneva 23, Switzerland
* e-mail: alice-publications@cern.ch
Received:
11
January
2018
Accepted:
24
February
2019
Published online:
14
March
2019
First results on 
, 
and K/p fluctuations are obtained with the ALICE detector at the CERN LHC as a function of centrality in collisions at . The observable 
, which is defined in terms of the moments of particle multiplicity distributions, is used to quantify the magnitude of dynamical fluctuations of relative particle yields and also provides insight into the correlation between particle pairs. This study is based on a novel experimental technique, called the Identity Method, which allows one to measure the moments of multiplicity distributions in case of incomplete particle identification. The results for show a change of sign in from positive to negative towards more peripheral collisions. For central collisions, the results follow the smooth trend of the data at lower energies and exhibits a change in sign for and K/p.
© CERN for the benefit of the ALICE collaboration, 2019
