Neutral pion and eta meson production in proton-proton collisions at root s=0.9 TeV and root s=7 TeV
Contribuinte(s) |
UNIVERSIDADE DE SÃO PAULO |
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Data(s) |
01/11/2013
01/11/2013
2012
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Resumo |
The first measurements of the invariant differential cross sections of inclusive pi(0) and eta meson production at mid-rapidity in proton-proton collisions root s = 0.9 TeV and root s = 7 TeV are reported. The pi(0) measurement covers the ranges 0.4 < p(T) < 7 GeV/c and 0.3 < p(T) < 25 GeV/c for these two energies, respectively. The production of eta mesons was measured at root s = 7 TeV in the range 0.4 < p(T) < 15 GeV/c. Next-to-Leading Order perturbative QCD calculations, which are consistent with the pi(0) spectrum at root s = 0.9 TeV, overestimate those of pi(0) and eta mesons at root s = 7 TeV, but agree with the measured eta/pi(0) ratio at root s = 7 TeV. (C) 2012 CERN. Published by Elsevier B.V. All rights reserved. Calouste Gulbenkian Foundation from Lisbon Calouste Gulbenkian Foundation from Lisbon Swiss Fonds Kidagan, Armenia Swiss Fonds Kidagan, Armenia Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq) Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq) Financiadora de Estudos e Projetos (FINEP) Financiadora de Estudos e Projetos (FINEP) Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP) Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP) National Natural Science Foundation of China (NSFC) National Natural Science Foundation of China (NSFC) Chinese Ministry of Education (CMOE) Chinese Ministry of Education (CMOE) Ministry of Science and Technology of China (MSTC) Ministry of Science and Technology of China (MSTC) Ministry of Education and Youth of the Czech Republic Ministry of Education and Youth of the Czech Republic Danish Natural Science Research Council Danish Natural Science Research Council Carlsberg Foundation Carlsberg Foundation Danish National Research Foundation Danish National Research Foundation European Research Council under the European Community European Research Council under the European Community Helsinki Institute of Physics Helsinki Institute of Physics Academy of Finland Academy of Finland Region Pays de Loire Region Pays de Loire Region Alsace Region Alsace Region Auvergne Region Auvergne CEA, France CEA, France German BMBF German BMBF Helmholtz Association Helmholtz Association Ministry of Development, Greece Ministry of Development, Greece Hungarian OTKA Hungarian OTKA National Office for Research and Technology (NKTH) National Office for Research and Technology (NKTH) Department of Atomic Energy Department of Atomic Energy Department of Science and Technology of the Government of India Department of Science and Technology of the Government of India Istituto Nazionale di Fisica Nucleare (INFN) of Italy Istituto Nazionale di Fisica Nucleare (INFN) of Italy MEXT MEXT Joint Institute for Nuclear Research, Dubna Joint Institute for Nuclear Research, Dubna National Research Foundation of Korea (NRF) National Research Foundation of Korea (NRF) CONACYT CONACYT DGAPA, Mexico DGAPA, Mexico ALFAEC ALFA-EC HELEN Program (HighEnergy physics LatinAmericanEuropean Network) HELEN Program (High-Energy physics Latin-American European Network) Stichting voor Fundamenteel Onderzoek der Materie (FOM) Stichting voor Fundamenteel Onderzoek der Materie (FOM) Nederlandse Organisatie voor Wetenschappelijk Onderzoek (NWO), Netherlands Nederlandse Organisatie voor Wetenschappelijk Onderzoek (NWO), Netherlands Research Council of Norway (NFR) Research Council of Norway (NFR) Polish Ministry of Science and Higher Education Polish Ministry of Science and Higher Education National Authority for Scientific Research NASR (Autoritatea Nationala pentru Cercetare Stiintifica ANCS) National Authority for Scientific Research NASR (Autoritatea Nationala pentru Cercetare Stiintifica - ANCS) Ministry of Education and Science of Russian Federation Ministry of Education and Science of Russian Federation International Science and Technology Center International Science and Technology Center Russian Academy of Sciences Russian Academy of Sciences Russian Federal Agency of Atomic Energy Russian Federal Agency of Atomic Energy Russian Federal Agency for Science and Innovations and CERNINTAS Russian Federal Agency for Science and Innovations and CERN-INTAS Ministry of Education of Slovakia Ministry of Education of Slovakia Department of Science and Technology, South Africa Department of Science and Technology, South Africa CIEMAT CIEMAT EELA EELA Ministerio de Educacion y Ciencia of Spain Ministerio de Educacion y Ciencia of Spain Xunta de Galicia (Conselleria de Educacion) Xunta de Galicia (Conselleria de Educacion) CEADEN CEADEN Cubaenergia, Cuba Cubaenergia, Cuba IAEA (International Atomic Energy Agency) IAEA (International Atomic Energy Agency) Swedish Research Council (VR) Swedish Research Council (VR) Knut & Alice Wallenberg Foundation (KAW) Knut & Alice Wallenberg Foundation (KAW) Ukraine Ministry of Education and Science Ukraine Ministry of Education and Science United Kingdom Science and Technology Facilities Council (STFC) United Kingdom Science and Technology Facilities Council (STFC) United States Department of Energy United States Department of Energy United States National Science Foundation United States National Science Foundation State of Texas State of Texas State of Ohio State of Ohio RFBR [10-02-91052] RFBR [CNRS-IN2P3] |
Identificador |
PHYSICS LETTERS B, AMSTERDAM, v. 717, n. 41334, supl. 1, Part 1, pp. 162-172, OCT 22, 2012 0370-2693 http://www.producao.usp.br/handle/BDPI/37625 10.1016/j.physletb.2012.09.015 |
Idioma(s) |
eng |
Publicador |
ELSEVIER SCIENCE BV AMSTERDAM |
Relação |
PHYSICS LETTERS B |
Direitos |
closedAccess Copyright ELSEVIER SCIENCE BV |
Palavras-Chave | #HADRON PRODUCTION #INCLUSIVE SPECTRA #COMPARISON WITH QCD #FRAGMENTATION FUNCTIONS #CROSS-SECTIONS #KAONS #PI(0) #ALICE #PHYSICS, MULTIDISCIPLINARY |
Tipo |
article original article publishedVersion |