Higher Harmonic Anisotropic Flow Measurements of Charged Particles in Pb-Pb Collisions at<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msqrt><mml:msub><mml:mi>s</mml:mi><mml:mrow><mml:mi>N</mml:mi><mml:mi>N</mml:mi></mml:mrow></mml:msub></mml:msqrt><mml:mo>=</mml:mo><mml:mn>2.76</mml:mn><mml:mtext> </mml:mtext><mml:mtext> </mml:mtext><mml:mi>TeV</mml:mi></mml:math>
K. AamodtDepartment of Physics and Technology, University of Bergen, Bergen, NorwayB. AbelevLawrence Livermore National Laboratory, Livermore, California, USAA. Abrahantes QuintanaCentro de Aplicaciones Tecnológicas y Desarrollo Nuclear (CEADEN), Havana, CubaD. AdamováNuclear Physics Institute, Academy of Sciences of the Czech Republic, Řež u Prahy, Czech RepublicA. AdareYale University, New Haven, Connecticut, USAM. M. AggarwalPhysics Department, Panjab University, Chandigarh, IndiaG. Aglieri RinellaEuropean Organization for Nuclear Research (CERN), Geneva, SwitzerlandA. G. AgocsKFKI Research Institute for Particle and Nuclear Physics, Hungarian Academy of Sciences, Budapest, HungaryA. AgostinelliDipartimento di Fisica dell’Università and Sezione INFN, Bologna, ItalyS. Aguilar SalazarInstituto de Física, Universidad Nacional Autónoma de México, Mexico City, MexicoZ. AhammedVariable Energy Cyclotron Centre, Kolkata, IndiaN. AhmadDepartment of Physics, Aligarh Muslim University, Aligarh, IndiaA. Ahmad MasoodiDepartment of Physics, Aligarh Muslim University, Aligarh, IndiaS. U. AhnGangneung-Wonju National University, Gangneung, South KoreaA. AkindinovInstitute for Theoretical and Experimental Physics, Moscow, RussiaD. AleksandrovRussian Research Centre Kurchatov Institute, Moscow, RussiaB. AlessandroSezione INFN, Turin, ItalyR. Alfaro MolinaInstituto de Física, Universidad Nacional Autónoma de México, Mexico City, MexicoA. AliciCentro Fermi-Centro Studi e Ricerche e Museo Storico della Fisica “Enrico Fermi,” Rome, ItalyA. AlkinBogolyubov Institute for Theoretical Physics, Kiev, UkraineE. Almaráz AviñaInstituto de Física, Universidad Nacional Autónoma de México, Mexico City, MexicoT. AltFrankfurt Institute for Advanced Studies, Johann Wolfgang Goethe-Universität Frankfurt, Frankfurt, GermanyV. AltiniDipartimento Interateneo di Fisica “M. Merlin” and Sezione INFN, Bari, ItalyI. AltsybeevC. AndreiA. AndronicResearch Division and ExtreMe Matter Institute EMMI, GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, GermanyV. AnguelovFrankfurt Institute for Advanced Studies, Johann Wolfgang Goethe-Universität Frankfurt, Frankfurt, GermanyC. AnsonDepartment of Physics, Ohio State University, Columbus, Ohio, USAT. AntičićRudjer Bošković Institute, Zagreb, CroatiaF. AntinoriSezione INFN, Padova, ItalyP. AntonioliSezione INFN, Bologna, ItalyL. AphecetcheSUBATECH, Ecole des Mines de Nantes, Université de Nantes, CNRS-IN2P3, Nantes, FranceH. AppelshäuserInstitut für Kernphysik, Johann Wolfgang Goethe-Universität Frankfurt, Frankfurt, GermanyN. ArborLaboratoire de Physique Subatomique et de Cosmologie (LPSC), Université Joseph Fourier, CNRS-IN2P3, Institut Polytechnique de Grenoble, Grenoble, FranceS. ArcelliDipartimento di Fisica dell’Università and Sezione INFN, Bologna, ItalyA. ArendInstitut für Kernphysik, Johann Wolfgang Goethe-Universität Frankfurt, Frankfurt, GermanyN. ArmestoDepartamento de Física de Partículas and IGFAE, Universidad de Santiago de Compostela, Santiago de Compostela, SpainR. ArnaldiSezione INFN, Turin, ItalyT. AronssonYale University, New Haven, Connecticut, USAI. C. ArseneResearch Division and ExtreMe Matter Institute EMMI, GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, GermanyM. ArslandokInstitut für Kernphysik, Johann Wolfgang Goethe-Universität Frankfurt, Frankfurt, GermanyA. AsryanA. AugustinusEuropean Organization for Nuclear Research (CERN), Geneva, SwitzerlandR. AverbeckResearch Division and ExtreMe Matter Institute EMMI, GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, GermanyT. C. AwesOak Ridge National Laboratory, Oak Ridge, Tennessee, USAJ. ÄystöHelsinki Institute of Physics (HIP) and University of Jyväskylä, Jyväskylä, FinlandM. D. AzmiDepartment of Physics, Aligarh Muslim University, Aligarh, IndiaM. BachFrankfurt Institute for Advanced Studies, Johann Wolfgang Goethe-Universität Frankfurt, Frankfurt, GermanyA. BadalàSezione INFN, Catania, ItalyY. W. BaekGangneung-Wonju National University, Gangneung, South KoreaR. BailhacheInstitut für Kernphysik, Johann Wolfgang Goethe-Universität Frankfurt, Frankfurt, GermanyR. BalaSezione INFN, Turin, ItalyR. Baldini FerroliCentro Fermi-Centro Studi e Ricerche e Museo Storico della Fisica “Enrico Fermi,” Rome, ItalyA. BaldisseriCommissariat à l’Energie Atomique, IRFU, Saclay, FranceA. BalditLaboratoire de Physique Corpusculaire (LPC), Clermont Université, Université Blaise Pascal, CNRS-IN2P3, Clermont-Ferrand, FranceJ. BánInstitute of Experimental Physics, Slovak Academy of Sciences, Kosice, SlovakiaR. C. BaralInstitute of Physics, Bhubaneswar, IndiaR. BarberaDipartimento di Fisica e Astronomia dell’Università and Sezione INFN, Catania, ItalyF. BarileDipartimento Interateneo di Fisica “M. Merlin” and Sezione INFN, Bari, ItalyG. G. BarnaföldiKFKI Research Institute for Particle and Nuclear Physics, Hungarian Academy of Sciences, Budapest, HungaryL. S. BarnbySchool of Physics and Astronomy, University of Birmingham, Birmingham, United KingdomV. BarretLaboratoire de Physique Corpusculaire (LPC), Clermont Université, Université Blaise Pascal, CNRS-IN2P3, Clermont-Ferrand, FranceJ. BartkeThe Henryk Niewodniczanski Institute of Nuclear Physics, Polish Academy of Sciences, Cracow, PolandM. BasileDipartimento di Fisica dell’Università and Sezione INFN, Bologna, ItalyN. BastidLaboratoire de Physique Corpusculaire (LPC), Clermont Université, Université Blaise Pascal, CNRS-IN2P3, Clermont-Ferrand, FranceB. BathenInstitut für Kernphysik, Westfälische Wilhelms-Universität Münster, Münster, GermanyG. BatigneSUBATECH, Ecole des Mines de Nantes, Université de Nantes, CNRS-IN2P3, Nantes, FranceB. BatyunyaJoint Institute for Nuclear Research (JINR), Dubna, RussiaC. BaumannInstitut für Kernphysik, Johann Wolfgang Goethe-Universität Frankfurt, Frankfurt, GermanyI. G. BeardenNiels Bohr Institute, University of Copenhagen, Copenhagen, DenmarkH. BeckInstitut für Kernphysik, Johann Wolfgang Goethe-Universität Frankfurt, Frankfurt, GermanyI. BelikovInstitut Pluridisciplinaire Hubert Curien (IPHC), Université de Strasbourg, CNRS-IN2P3, Strasbourg, FranceF. BelliniDipartimento di Fisica dell’Università and Sezione INFN, Bologna, ItalyR. BellwiedUniversity of Houston, Houston, Texas, USAE. MorenoInstituto de Física, Universidad Nacional Autónoma de México, Mexico City, MexicoS. BeolèDipartimento di Fisica Sperimentale dell’Università and Sezione INFN, Turin, ItalyI. BerceanuA. BercuciE. BerdermannResearch Division and ExtreMe Matter Institute EMMI, GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, GermanyY. BerdnikovPetersburg Nuclear Physics Institute, Gatchina, RussiaC. BergmannInstitut für Kernphysik, Westfälische Wilhelms-Universität Münster, Münster, GermanyL. BetevEuropean Organization for Nuclear Research (CERN), Geneva, SwitzerlandA. BhasinPhysics Department, University of Jammu, Jammu, IndiaA. K. BhatiPhysics Department, Panjab University, Chandigarh, IndiaL. BianchiDipartimento di Fisica Sperimentale dell’Università and Sezione INFN, Turin, ItalyN. BianchiLaboratori Nazionali di Frascati, INFN, Frascati, ItalyC. BianchinDipartimento di Fisica dell’Università and Sezione INFN, Padova, ItalyJ. BielčíkFaculty of Nuclear Sciences and Physical Engineering, Czech Technical University in Prague, Prague, Czech RepublicJ. BielčíkováNuclear Physics Institute, Academy of Sciences of the Czech Republic, Řež u Prahy, Czech RepublicA. BilandzicNikhef, National Institute for Subatomic Physics, Amsterdam, NetherlandsE. BiolcatiDipartimento di Fisica Sperimentale dell’Università and Sezione INFN, Turin, ItalyF. BlancoCentro de Investigaciones Energéticas Medioambientales y Tecnológicas (CIEMAT), Madrid, SpainF. BlancoCentro de Investigaciones Energéticas Medioambientales y Tecnológicas (CIEMAT), Madrid, SpainD. BlauRussian Research Centre Kurchatov Institute, Moscow, RussiaC. BlumeInstitut für Kernphysik, Johann Wolfgang Goethe-Universität Frankfurt, Frankfurt, GermanyM. BoccioliEuropean Organization for Nuclear Research (CERN), Geneva, SwitzerlandNicolas BockDepartment of Physics, Ohio State University, Columbus, Ohio, USAA. BogdanovMoscow Engineering Physics Institute, Moscow, RussiaH. BøggildNiels Bohr Institute, University of Copenhagen, Copenhagen, DenmarkM. BogolyubskyInstitute for High Energy Physics, Protvino, Russia
2011lv
ABI
Annotatsiya
We report on the first measurement of the triangular v3, quadrangular v4, and pentagonal v5 charged particle flow in Pb-Pb collisions at sqrt(s(NN)) = 2.76 TeV measured with the ALICE detector at the CERN Large Hadron Collider. We show that the triangular flow can be described in terms of the initial spatial anisotropy and its fluctuations, which provides strong constraints on its origin. In the most central events, where the elliptic flow v2 and v3 have similar magnitude, a double peaked structure in the two-particle azimuthal correlations is observed, which is often interpreted as a Mach cone response to fast partons. We show that this structure can be naturally explained from the measured anisotropic flow Fourier coefficients.
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