Artículos de revistas
Study of Z boson production in PbPb collisions at √s NN=2.76TeV
Fecha
2011-05-24Registro en:
Physical Review Letters, v. 106, n. 21, 2011.
0031-9007
1079-7114
10.1103/PhysRevLett.106.212301
2-s2.0-79960817642
Autor
Yerevan Physics Institute
Institut für Hochenergiephysik der OeAW
National Centre for Particle and High Energy Physics
Universiteit Antwerpen
Vrije Universiteit Brussel
Université Libre de Bruxelles
Ghent University
Université Catholique de Louvain
Université de Mons
Centro Brasileiro de Pesquisas Fisicas
Universidade do Estado do Rio de Janeiro (UERJ)
Universidade Estadual Paulista (UNESP)
Institute for Nuclear Research and Nuclear Energy
University of Sofia
Institute of High Energy Physics
Peking University
Universidad de Los Andes
Technical University of Split
University of Split
Institute Rudjer Boskovic
University of Cyprus
Charles University
Egyptian Network of High Energy Physics, Cairo
National Institute of Chemical Physics and Biophysics
University of Helsinki
Helsinki Institute of Physics
Lappeenranta University of Technology
IN2P3-CNRS
CEA/Saclay
Université de Haute Alsace Mulhouse
L'Institut National de Physique Nucleaire et de Physique des Particules (IN2P3)
Institut de Physique Nucléaire de Lyon
Academy of Science
Tbilisi State University
I. Physikalisches Institut
III. Physikalisches Institut A
III. Physikalisches Institut B
Deutsches Elektronen-Synchrotron
University of Hamburg
Institut für Experimentelle Kernphysik
Institute of Nuclear Physics Demokritos
University of Athens
University of Ioánnina
KFKI Research Institute for Particle and Nuclear Physics
Institute of Nuclear Research ATOMKI
University of Debrecen
Panjab University
University of Delhi
Bhabha Atomic Research Centre
Tata Institute of Fundamental Research-EHEP
Tata Institute of Fundamental Research-HECR
Institute for Research and Fundamental Sciences (IPM)
Politecnico di Bari
INFN Sezione di Bari
Università di Bari
Università di Bologna
INFN Sezione di Bologna
Università di Catania
INFN Sezione di Catania
Università di Firenze
INFN Sezione di Firenze
INFN Laboratori Nazionali di Frascati
INFN Sezione di Genova
Università di Milano-Bicocca
INFN Sezione di Milano-Biccoca
Università di Napoli Federico II
INFN Sezione di Napoli
Università di Trento (Trento)
INFN Sezione di Padova
Università di Padova
Università di Pavia
INFN Sezione di Pavia
Università di Perugia
INFN-Sezione di Perugia
Scuola Normale Superiore di Pisa
INFN Sezione di Pisa
Università di Pisa
Università di Roma La Sapienza
INFN Sezione-di Roma
Università del Piemonte Orientale (Novara)
INFN Sezione di Torino
Università di Torino
Università di Trieste
INFN Sezione di Trieste
Kangwon National University
Kyungpook National University
Institute for Universe and Elementary Particles
Korea University
University of Seoul
Sungkyunkwan University
Vilnius University
Centro de Investigacion y de Estudios Avanzados del IPN
Universidad Iberoamericana
Benemerita Universidad Autonoma de Puebla
Universidad Autónoma de San Luis Potosí
University of Auckland
University of Canterbury
Quaid-I-Azam University
University of Warsaw
Soltan Institute for Nuclear Studies
Laboratório de Instrumentação e Física Experimental de Partículas
Joint Institute for Nuclear Research
Petersburg Nuclear Physics Institute
Institute for Nuclear Research
Institute for Theoretical and Experimental Physics
Moscow State University
P.N. Lebedev Physical Institute
Institute for High Energy Physics
Vinca Institute of Nuclear Sciences
Centro de Investigaciones Energéticas Medioambientales y Tecnológicas (CIEMAT)
Universidad Autónoma de Madrid
Universidad de Oviedo
CSIC-Universidad de Cantabria
European Organization for Nuclear Research
Paul Scherrer Institut
ETH Zurich
Universität Zürich
National Central University
National Taiwan University (NTU)
Cukurova University
Physics Department
Bogazici University
Kharkov Institute of Physics and Technology
University of Bristol
Rutherford Appleton Laboratory
Imperial College
Brunel University
Baylor University
Boston University
Brown University
University of California, Davis
University of California, Los Angeles
University of California, Riverside
University of California
University of California, Santa Barbara
California Institute of Technology
Carnegie Mellon University
University of Colorado at Boulder
Cornell University
Fairfield University
Fermi National Accelerator Laboratory
University of Florida
Florida International University
Florida State University
Florida Institute of Technology
University of Illinois at Chicago (UIC)
University of Iowa
Johns Hopkins University
University of Kansas
Kansas State University
Lawrence Livermore National Laboratory
University of Maryland
Massachusetts Institute of Technology
University of Minnesota
University of Mississippi
University of Nebraska-Lincoln
State University of New York at Buffalo
Northeastern University
Northwestern University
University of Notre Dame
Ohio State University
Princeton University
University of Puerto Rico
Purdue University
Purdue University Calumet
Rice University
University of Rochester
Rockefeller University
State University of New Jersey
University of Tennessee
Texas AandM University
Texas Tech University
Vanderbilt University
University of Virginia
Wayne State University
University of Wisconsin
European Organization for Nuclear-Research
Universidade Federal do ABC (UFABC)
Suez Canal University
British University
Soltan Institute for Nuclear-Studies
Massachusetts Institute of Technology.
Université de Haute-Alsace
Brandenburg University of Technology
Moscow State University.
Institute of Nuclear Research ATOMKI.
Eötvös Loránd University
Tata Institute of Fundamental Research - HECR
University of Visva-Bharati
Facoltà Ingegneria Università di Roma La Sapienza
Università della Basilicata
Laboratori Nazionali di Legnaro dell'INFN
Università degli studi di Siena
University of Belgrade
University of California, Los-Angeles
University of Florida.
Université de Genève
Scuola Normale e Sezione dell' INFN
Università di Roma La-Sapienza
University of Athens.
California Institute of Technology.
University of-Kansas
Institute for Theoretical and Experimental-Physics
Paul Scherrer-Institut
Vinca Institute of Nuclear Sciences.
Gaziosmanpasa University
Adiyaman University
Mersin University
Izmir Institute of Technology
Kafkas University
Suleyman Demirel University
Ege University
Rutherford Appleton-Laboratory
University of Southampton
Utah Valley University
Institute for Nuclear-Research
Los Alamos National Laboratory
Institución
Resumen
A search for Z bosons in the μ+μ- decay channel has been performed in PbPb collisions at √sNN=2.76TeV with the CMS detector at the LHC, in a 7.2μb-1 data sample. The number of opposite-sign muon pairs observed in the 60-120GeV/c2 invariant mass range is 39, corresponding to a yield per unit of rapidity (y) and per minimum bias event of [33.8±5.5(stat)±4.4(syst)]×10-8, in the |y|<2.0 range. Rapidity, transverse momentum, and centrality dependencies are also measured. The results agree with next-to-leading order QCD calculations, scaled by the number of incoherent nucleon-nucleon collisions. © 2011 American Physical Society.