Identified charged hadron production in p plus p collisions at root s=200 and 62.4 GeV
Contribuinte(s) |
UNIVERSIDADE DE SÃO PAULO |
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Data(s) |
18/04/2012
18/04/2012
2011
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Resumo |
Transverse momentum distributions and yields for pi(+/-), K(+/-), p, and (p) over bar in p + p collisions at root s = 200 and 62.4 GeV at midrapidity are measured by the PHENIX experiment at the Relativistic Heavy Ion Collider (RHIC). These data provide important baseline spectra for comparisons with identified particle spectra in heavy ion collisions at RHIC. We present the inverse slope parameter T(inv), mean transverse momentum < p(T)>, and yield per unit rapidity dN/dy at each energy, and compare them to other measurements at different root s in p + p and p + (p) over bar collisions. We also present the scaling properties such as m(T) scaling and x(T) scaling on the p(T) spectra between different energies. To discuss the mechanism of the particle production in p + p collisions, the measured spectra are compared to next-to-leading-order or next-to-leading-logarithmic perturbative quantum chromodynamics calculations. Office of Nuclear Physics in the Office of Science of the Department of Energy (DOE) National Science Foundation (NSF) Renaissance Technologies LLC Abilene Christian University Research Council Research Foundation of SUNY College of Arts and Sciences, Vanderbilt University (USA) Ministry of Education, Culture, Sports, Science, and Technology (MEXT), Japan JSPS - Japan Society for the Promotion of Science (Japan) Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq) Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP) (Brazil) NSFC Natural Science Foundation of China (People's Republic of China) MSMT Ministry of Education, Youth and Sports (Czech Republic) CNRS Centre National de la Recherche Scientifique, CEA Commissariat a l'Energie Atomique (CNRS/IN2P3) Institut National de Physique Nucleaire et de Physique des Particules (France) Ministry of Industry, Science and Technologies BMBF - Bundesministerium fur Bildung und Forschung, Germany (DAAD) Deutscher Akademischer Austausch Dienst, Germany Alexander von Humboldt Stiftung (Germany) OTKA (Hungary) (DAE) Department of Atomic Energy, India (DST) Department of Science and Technology, India ISF - Israel Science Foundation (Israel) National Research Foundation (NRF), Korea Ministry Education Science and Technology (MEST), Korea Ministry of Education and Science RAS Russia Academy of Sciences FAAE Federal Agency of Atomic Energy (Russia) VR (Sweden) Wallenberg Foundation (Sweden) CRDF U.S. Civilian Research and Development Foundation for the Independent States of the Former Soviet Union U.S.-Hungarian Fulbright Foundation for Educational Exchange (BSF) U.S.-Israel Binational Science Foundation |
Identificador |
PHYSICAL REVIEW C, v.83, n.6, 2011 0556-2813 http://producao.usp.br/handle/BDPI/16126 10.1103/PhysRevC.83.064903 |
Idioma(s) |
eng |
Publicador |
AMER PHYSICAL SOC |
Relação |
Physical Review C |
Direitos |
restrictedAccess Copyright AMER PHYSICAL SOC |
Palavras-Chave | #PROTON-PROTON COLLISIONS #HIGH TRANSVERSE-MOMENTUM #HIGH-ENERGY COLLISIONS #FRAGMENTATION FUNCTIONS #PARTICLE-PRODUCTION #INCLUSIVE PROCESSES #D+AU COLLISIONS #O PRODUCTION #CERN-ISR #GEV-C #Physics, Nuclear |
Tipo |
article original article publishedVersion |