Artículos de revistas
Measurement of the differential cross section for isolated prompt photon production in pp collisions at 7 TeV
Fecha
2011-09-29Registro en:
Physical Review D - Particles, Fields, Gravitation and Cosmology, v. 84, n. 5, 2011.
1550-7998
1550-2368
10.1103/PhysRevD.84.052011
2-s2.0-80054014357
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
National Institute of Chemical Physics and Biophysics
University of Helsinki
Helsinki Institute of Physics
Lappeenranta University of Technology
IN2P3-CNRS
CEA/Saclay
CNRS/IN2P3
Centre de Calcul de l'Institut National de Physique Nucleaire et de Physique des Particules (IN2P3)
Institut de Physique Nucléaire de Lyon
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
Saha Institute of Nuclear Physics
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 Bologna
Università di Bologna
INFN Sezione di Catania
Università di Catania
INFN Sezione di Firenze
Università di Firenze
INFN Laboratori Nazionali di Frascati
INFN Sezione di Genova
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Università di Milano-Bicocca
INFN Sezione di Napoli
Università di Napoli federico II
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Università di Padova
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Università di Pavia
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Kangwon National University
Kyungpook National University
Institute for Universe and Elementary Particles
Konkuk University
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
Faculty of Physics and Vinca Institute of Nuclear Sciences
Centro de Investigaciones Energéticas Medioambientales y Tecnológicas (CIEMAT)
Universidad Autónoma de Madrid
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CSIC-Universidad de Cantabria
European Organization for Nuclear Research
Paul Scherrer Institut
ETH Zurich
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Scuola Normale e Sezione Dell' INFN
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Paul Scherrer-Institut
Faculty of Physics, and Vinca Institute of Nuclear Sciences
Institute for Theoretical and Experimental-Physics
Gaziosmanpasa University
Adiyaman University
University of-Iowa
Mersin University
Izmir Institute of Technology
Kafkas University
Suleyman Demirel University
Ege University
Rutherford Appleton-Laboratory
University of Southampton
UT Valley University
Institución
Resumen
A measurement of the differential cross section for the inclusive production of isolated prompt photons in proton-proton collisions at a center-of-mass energy of 7 TeV is presented. The data sample corresponds to an integrated luminosity of 36pb-1 recorded by the CMS detector at the LHC. The measurement covers the pseudorapidity range |η|<2.5 and the transverse energy range 25<ET<400GeV, corresponding to the kinematic region 0.007<xT<0.114. Photon candidates are identified with two complementary methods, one based on photon conversions in the silicon tracker and the other on isolated energy deposits in the electromagnetic calorimeter. The measured cross section is presented as a function of ET in four pseudorapidity regions. The next-to-leading-order perturbative QCD calculations are consistent with the measured cross section. © 2011 CERN. Published by the American Physical Society under the terms of the Creative Commons Attribution 3.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.