Net-charge fluctuations in Pb-Pb collisions at sqrt[sNN]=2.76 TeV

. 2013 Apr 12 ; 110 (15) : 152301. [epub] 20130410

Status PubMed-not-MEDLINE Jazyk angličtina Země Spojené státy americké Médium print-electronic

Typ dokumentu časopisecké články

Perzistentní odkaz   https://www.medvik.cz/link/pmid25167254

We report the first measurement of the net-charge fluctuations in Pb-Pb collisions at sqrt[sNN]=2.76 TeV, measured with the ALICE detector at the CERN Large Hadron Collider. The dynamical fluctuations per unit entropy are observed to decrease when going from peripheral to central collisions. An additional reduction in the amount of fluctuations is seen in comparison to the results from lower energies. We examine the dependence of fluctuations on the pseudorapidity interval, which may account for the dilution of fluctuations during the evolution of the system. We find that the fluctuations at the LHC are smaller compared to the measurements at the BNL Relativistic Heavy Ion Collider, and as such, closer to what has been theoretically predicted for the formation of a quark-gluon plasma.

5 Fock Institute for Physics St Petersburg State University St Petersburg Russia

Benemérita Universidad Autónoma de Puebla Puebla Mexico

Bogolyubov Institute for Theoretical Physics Kiev Ukraine

Budker Institute for Nuclear Physics Novosibirsk Russia

California Polytechnic State University San Luis Obispo California USA

Centre de Calcul de l'IN2P3 Villeurbanne France

Centro de Aplicaciones Tecnológicas y Desarrollo Nuclear Havana Cuba

Centro de Investigación y de Estudios Avanzados Mexico City and Mérida Mexico

Centro de Investigación y de Estudios Avanzados Mexico City and Mérida Mexico and Benemérita Universidad Autónoma de Puebla Puebla Mexico

Centro de Investigaciones Energéticas Medioambientales y Tecnológicas Madrid Spain

Centro Fermi Centro Studi e Ricerche e Museo Storico della Fisica Enrico Fermi Rome Italy

Centro Fermi Centro Studi e Ricerche e Museo Storico della Fisica Enrico Fermi Rome Italy and Dipartimento di Fisica E R Caianiello dell'Università and Gruppo Collegato INFN Salerno Italy

Chicago State University Chicago USA

Commissariat à l'Energie Atomique IRFU Saclay France

Departamento de Física de Partículas and IGFAE Universidad de Santiago de Compostela Santiago de Compostela Spain

Department of Physics Aligarh Muslim University Aligarh India

Department of Physics and Technology University of Bergen Bergen Norway

Department of Physics Sejong University Seoul South Korea

Department of Physics The Ohio State University Columbus Ohio USA

Department of Physics University of Oslo Oslo Norway

Dipartimento di Fisica dell'Università and Sezione INFN Bologna Italy

Dipartimento di Fisica dell'Università and Sezione INFN Bologna Italy and Centro Fermi Centro Studi e Ricerche e Museo Storico della Fisica Enrico Fermi Rome Italy

Dipartimento di Fisica dell'Università and Sezione INFN Cagliari Italy

Dipartimento di Fisica dell'Università and Sezione INFN Padova Italy

Dipartimento di Fisica dell'Università and Sezione INFN Trieste Italy

Dipartimento di Fisica dell'Università and Sezione INFN Trieste Italy and Sezione INFN Trieste Italy

Dipartimento di Fisica dell'Università La Sapienza and Sezione INFN Rome Italy

Dipartimento di Fisica e Astronomia dell'Università and Sezione INFN Catania Italy

Dipartimento di Fisica E R Caianiello dell'Università and Gruppo Collegato INFN Salerno Italy

Dipartimento di Fisica Sperimentale dell'Università and Sezione INFN Turin Italy

Dipartimento di Scienze e Innovazione Tecnologica dell'Università del Piemonte Orientale and Gruppo Collegato INFN Alessandria Italy

Dipartimento Interateneo di Fisica M Merlin and Sezione INFN Bari Italy

Division of Experimental High Energy Physics University of Lund Lund Sweden

Division of Experimental High Energy Physics University of Lund Lund Sweden and Instituto de Ciencias Nucleares Universidad Nacional Autónoma de México Mexico City Mexico

Eberhard Karls Universität Tübingen Tübingen Germany

European Organization for Nuclear Research Bucharest Romania

European Organization for Nuclear Research Geneva Switzerland

European Organization for Nuclear Research Geneva Switzerland and Centro Fermi Centro Studi e Ricerche e Museo Storico della Fisica Enrico Fermi Rome Italy and Sezione INFN Bari Italy

European Organization for Nuclear Research Geneva Switzerland and Dipartimento di Fisica dell'Università and Sezione INFN Bologna Italy and Centro Fermi Centro Studi e Ricerche e Museo Storico della Fisica Enrico Fermi Rome Italy

European Organization for Nuclear Research Geneva Switzerland and Dipartimento di Fisica dell'Università and Sezione INFN Padova Italy

European Organization for Nuclear Research Geneva Switzerland and Dipartimento di Fisica e Astronomia dell'Università and Sezione INFN Catania Italy

European Organization for Nuclear Research Geneva Switzerland and Dipartimento di Fisica Sperimentale dell'Università and Sezione INFN Turin Italy

European Organization for Nuclear Research Geneva Switzerland and Dipartimento Interateneo di Fisica M Merlin and Sezione INFN Bari Italy

European Organization for Nuclear Research Geneva Switzerland and Frankfurt Institute for Advanced Studies Johann Wolfgang Goethe Universität Frankfurt Frankfurt Germany

European Organization for Nuclear Research Geneva Switzerland and Institut für Kernphysik Technische Universität Darmstadt Darmstadt Germany

European Organization for Nuclear Research Geneva Switzerland and Institut für Kernphysik Westfälische Wilhelms Universität Münster Münster Germany

European Organization for Nuclear Research Geneva Switzerland and Instituto de Ciencias Nucleares Universidad Nacional Autónoma de México Mexico City Mexico

European Organization for Nuclear Research Geneva Switzerland and Research Division and ExtreMe Matter Institute EMMI GSI Helmholtzzentrum für Schwerionenforschung Darmstadt Germany

European Organization for Nuclear Research Geneva Switzerland and SUBATECH Ecole des Mines de Nantes Université de Nantes CNRS IN2P3 Nantes France

European Organization for Nuclear Research Geneva Switzerland and Université de Lyon Université Lyon 1 CNRS IN2P3 IPN Lyon Villeurbanne France

European Organization for Nuclear Research Geneva Switzerland and Warsaw University of Technology Warsaw Poland

European Organization for Nuclear Research Geneva Switzerland and Yerevan Physics Institute Yerevan Armenia

European Organization for Nuclear Research Geneva Switzerland and Yildiz Technical University Istanbul Turkey

Faculty of Engineering Bergen University College Bergen Norway

Faculty of Mathematics Physics and Informatics Comenius University Bratislava Slovakia

Faculty of Nuclear Sciences and Physical Engineering Czech Technical University Prague Prague Czech Republic

Faculty of Nuclear Sciences and Physical Engineering Czech Technical University Prague Prague Czech Republic and Nuclear Physics Institute Academy of Sciences of the Czech Republic Řež u Prahy Czech Republic

Faculty of Science P J Šafárik University Košice Slovakia

Frankfurt Institute for Advanced Studies Johann Wolfgang Goethe Universität Frankfurt Frankfurt Germany

Gangneung Wonju National University Gangneung South Korea

Helsinki Institute of Physics and University of Jyväskylä Jyväskylä Finland

Helsinki Institute of Physics and University of Jyväskylä Jyväskylä Finland and Yonsei University Seoul South Korea

Hiroshima University Hiroshima Japan

Hua Zhong Normal University Wuhan China

Indian Institute of Technology Bombay Mumbai India

Indian Institute of Technology Indore Indore India

Institut de Physique Nucléaire d'Orsay Université Paris Sud CNRS IN2P3 Orsay France

Institut für Informatik Johann Wolfgang Goethe Universität Frankfurt Frankfurt Germany

Institut für Informatik Johann Wolfgang Goethe Universität Frankfurt Frankfurt Germany and Kirchhoff Institut für Physik Ruprecht Karls Universität Heidelberg Heidelberg Germany

Institut für Kernphysik Johann Wolfgang Goethe Universität Frankfurt Frankfurt Germany

Institut für Kernphysik Technische Universität Darmstadt Darmstadt Germany

Institut für Kernphysik Westfälische Wilhelms Universität Münster Münster Germany

Institut Pluridisciplinaire Hubert Curien Université de Strasbourg CNRS IN2P3 Strasbourg France

Institut Pluridisciplinaire Hubert Curien Université de Strasbourg CNRS IN2P3 Strasbourg France and Dipartimento di Scienze e Innovazione Tecnologica dell'Università del Piemonte Orientale and Gruppo Collegato INFN Alessandria Italy

Institut Pluridisciplinaire Hubert Curien Université de Strasbourg CNRS IN2P3 Strasbourg France and Hua Zhong Normal University Wuhan China

Institute for High Energy Physics Protvino Russia

Institute for Nuclear Research Academy of Sciences Moscow Russia

Institute for Theoretical and Experimental Physics Moscow Russia

Institute of Experimental Physics Slovak Academy of Sciences Košice Slovakia

Institute of Experimental Physics Slovak Academy of Sciences Košice Slovakia and Joint Institute for Nuclear Research Dubna Russia

Institute of Experimental Physics Slovak Academy of Sciences Košice Slovakia and School of Physics and Astronomy University of Birmingham Birmingham United Kingdom

Institute of Physics Academy of Sciences of the Czech Republic Prague Czech Republic

Institute of Physics Bhubaneswar India

Institute of Space Sciences Bucharest Romania

Instituto de Ciencias Nucleares Universidad Nacional Autónoma de México Mexico City Mexico

Instituto de Física Universidad Nacional Autónoma de México Mexico City Mexico

Instituto de Física Universidad Nacional Autónoma de México Mexico City Mexico and Centro de Investigaciones Energéticas Medioambientales y Tecnológicas Madrid Spain

Joint Institute for Nuclear Research Dubna Russia

KFKI Research Institute for Particle and Nuclear Physics Hungarian Academy of Sciences Budapest Hungary

Korea Institute of Science and Technology Information Daejeon South Korea

Laboratoire de Physique Corpusculaire Clermont Université Université Blaise Pascal CNRS IN2P3 Clermont Ferrand France

Laboratoire de Physique Corpusculaire Clermont Université Université Blaise Pascal CNRS IN2P3 Clermont Ferrand France and Dipartimento di Fisica Sperimentale dell'Università and Sezione INFN Turin Italy

Laboratoire de Physique Corpusculaire Clermont Université Université Blaise Pascal CNRS IN2P3 Clermont Ferrand France and Gangneung Wonju National University Gangneung South Korea

Laboratoire de Physique Corpusculaire Clermont Université Université Blaise Pascal CNRS IN2P3 Clermont Ferrand France and Hua Zhong Normal University Wuhan China

Laboratoire de Physique Subatomique et de Cosmologie Université Joseph Fourier CNRS IN2P3 Institut Polytechnique de Grenoble Grenoble France

Laboratori Nazionali di Frascati INFN Frascati Italy

Laboratori Nazionali di Legnaro INFN Legnaro Italy

Lawrence Berkeley National Laboratory Berkeley California USA

Lawrence Livermore National Laboratory Livermore California USA

Moscow Engineering Physics Institute Moscow Russia

National Institute for Physics and Nuclear Engineering Bucharest Romania

Niels Bohr Institute University of Copenhagen Copenhagen Denmark

Niels Bohr Institute University of Copenhagen Copenhagen Denmark and Nikhef National Institute for Subatomic Physics Amsterdam Netherlands

Nikhef National Institute for Subatomic Physics Amsterdam Netherlands

Nikhef National Institute for Subatomic Physics Amsterdam Netherlands and Nikhef National Institute for Subatomic Physics and Institute for Subatomic Physics of Utrecht University Utrecht Netherlands

Nikhef National Institute for Subatomic Physics and Institute for Subatomic Physics of Utrecht University Utrecht Netherlands

Nuclear Physics Institute Academy of Sciences of the Czech Republic Řež u Prahy Czech Republic

Oak Ridge National Laboratory Oak Ridge Tennessee USA

Petersburg Nuclear Physics Institute Gatchina Russia

Physics Department Creighton University Omaha Nebraska USA

Physics Department Panjab University Chandigarh India

Physics Department University of Athens Athens Greece

Physics Department University of Cape Town iThemba LABS Cape Town South Africa

Physics Department University of Jammu Jammu India

Physics Department University of Rajasthan Jaipur India

Physikalisches Institut Ruprecht Karls Universität Heidelberg Heidelberg Germany

Physikalisches Institut Ruprecht Karls Universität Heidelberg Heidelberg Germany and Fachhochschule Köln Köln Germany

Purdue University West Lafayette Indiana USA

Pusan National University Pusan South Korea

Research Division and ExtreMe Matter Institute EMMI GSI Helmholtzzentrum für Schwerionenforschung Darmstadt Germany

Research Division and ExtreMe Matter Institute EMMI GSI Helmholtzzentrum für Schwerionenforschung Darmstadt Germany and Physikalisches Institut Ruprecht Karls Universität Heidelberg Heidelberg Germany

Rudjer Bošković Institute Zagreb Croatia

Rudjer Bošković Institute Zagreb Croatia and Instituto de Ciencias Nucleares Universidad Nacional Autónoma de México Mexico City Mexico

Russian Federal Nuclear Center Sarov Russia

Russian Research Centre Kurchatov Institute Moscow Russia

Saha Institute of Nuclear Physics Kolkata India

School of Physics and Astronomy University of Birmingham Birmingham United Kingdom

Sección Física Departamento de Ciencias Pontificia Universidad Católica del Perú Lima Peru

Sezione INFN Bari Italy

Sezione INFN Bologna Italy

Sezione INFN Bologna Italy and Centro Fermi Centro Studi e Ricerche e Museo Storico della Fisica Enrico Fermi Rome Italy

Sezione INFN Cagliari Italy

Sezione INFN Catania Italy

Sezione INFN Catania Italy and Dipartimento di Fisica e Astronomia dell'Università and Sezione INFN Catania Italy

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Sezione INFN Padova Italy and Dipartimento di Fisica dell'Università and Sezione INFN Padova Italy

Sezione INFN Rome Italy

Sezione INFN Trieste Italy

Sezione INFN Turin Italy

Sezione INFN Turin Italy and Dipartimento di Fisica Sperimentale dell'Università and Sezione INFN Turin Italy

Soltan Institute for Nuclear Studies Warsaw Poland

Soltan Institute for Nuclear Studies Warsaw Poland and Institute of Theoretical Physics University of Wroclaw Wroclaw Poland

SUBATECH Ecole des Mines de Nantes Université de Nantes CNRS IN2P3 Nantes France

SUBATECH Ecole des Mines de Nantes Université de Nantes CNRS IN2P3 Nantes France and The Henryk Niewodniczanski Institute of Nuclear Physics Polish Academy of Sciences Cracow Poland

SUBATECH Ecole des Mines de Nantes Université de Nantes CNRS IN2P3 Nantes France and Université de Lyon Université Lyon 1 CNRS IN2P3 IPN Lyon Villeurbanne France

Technical University of Split FESB Split Croatia

The Henryk Niewodniczanski Institute of Nuclear Physics Polish Academy of Sciences Cracow Poland

The University of Texas at Austin Physics Department Austin Texas USA

Universidad Autónoma de Sinaloa Culiacán Mexico

Universidade de São Paulo São Paulo Brazil

Universidade Estadual de Campinas Campinas Brazil

Université de Lyon Université Lyon 1 CNRS IN2P3 IPN Lyon Villeurbanne France

University of Houston Houston Texas USA

University of Tennessee Knoxville Tennessee USA

University of Tokyo Tokyo Japan

University of Tsukuba Tsukuba Japan

Variable Energy Cyclotron Centre Kolkata India

Warsaw University of Technology Warsaw Poland

Wayne State University Detroit Michigan USA

Wayne State University Detroit Michigan USA and Division of Experimental High Energy Physics University of Lund Lund Sweden

Yale University New Haven Connecticut USA

Yale University New Haven Connecticut USA and Wayne State University Detroit Michigan USA

Yerevan Physics Institute Yerevan Armenia

Yonsei University Seoul South Korea

Zentrum für Technologietransfer und Telekommunikation Fachhochschule Worms Worms Germany

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