Hadronic resonance production in d+Au collisions at root S(NN) = 200 GeV measured at the BNL Relativistic Heavy Ion Collider
Contribuinte(s) |
UNIVERSIDADE DE SÃO PAULO |
---|---|
Data(s) |
18/04/2012
18/04/2012
2008
|
Resumo |
We present the first measurements of the rho(770)(0),K(*)(892),Delta(1232)(++),Sigma(1385), and Lambda(1520) resonances in d+Au collisions at <radical><radicand>s(NN)</radicand></radical>=200 GeV, reconstructed via their hadronic decay channels using the STAR detector (the solenoidal tracker at the BNL Relativistic Heavy Ion Collider). The masses and widths of these resonances are studied as a function of transverse momentum p(T). We observe that the resonance spectra follow a generalized scaling law with the transverse mass m(T). The < p(T)> of resonances in minimum bias collisions are compared with the < p(T)> of pi,K, and <overline>p</overline>. The rho(0)/pi(-),K(*)/K(-),Delta(++)/p,Sigma(1385)/Lambda, and Lambda(1520)/Lambda ratios in d+Au collisions are compared with the measurements in minimum bias p+p interactions, where we observe that both measurements are comparable. The nuclear modification factors (R(dAu)) of the rho(0),K(*), and Sigma(*) scale with the number of binary collisions (N(bin)) for p(T)> 1.2 GeV/c. RCF at BNL NERSC Center at LBNL HENP Divisions of the Office of Science U. S. DOE U. S. NSF National Science Foundation BMBF - Bundesministerium fur Bildung und Forschung [IN2P3], Germany EPSRC of the United Kingdom EMN of France FAPESP of Brazil MES Russian Ministry of Science and Technology Ministry of Education (MoE) and the NNSFC of China IRP and GACR of the Czech Republic FOM of the Netherlands (DAE) Department of Atomic Energy, India (DST) Department of Science and Technology, India (CSIR) Council of Scientific and Industrial Research - India Swiss NSF Polish State Committee for Scientific Research STAA of Slovakia Korea Science & Engineering Foundation (KOSEF) |
Identificador |
PHYSICAL REVIEW C, v.78, n.4, 2008 0556-2813 http://producao.usp.br/handle/BDPI/16331 10.1103/PhysRevC.78.044906 |
Idioma(s) |
eng |
Publicador |
AMER PHYSICAL SOC |
Relação |
Physical Review C |
Direitos |
restrictedAccess Copyright AMER PHYSICAL SOC |
Palavras-Chave | #LARGE TRANSVERSE-MOMENTUM #ENERGY NUCLEAR COLLISIONS #TIME PROJECTION CHAMBER #FREEZE-OUT #INCLUSIVE PRODUCTION #PARTICLE-PRODUCTION #AU+AU COLLISIONS #GLUON PRODUCTION #MESON PRODUCTION #COLORED GLASS #Physics, Nuclear |
Tipo |
article original article publishedVersion |