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Identified particle transverse momentum spectra in p+p and d+Au collisions at sqrt{s_NN} = 200 GeV
The transverse momentum () spectra for identified charged
pions, protons and anti-protons from + and +Au collisions are measured
around midrapidity (y 0.5) over the range of 0.3
10 GeV/ at = 200 GeV. The
charged pion and proton+anti-proton spectra at high p_{T} in p+p collisions
have been compared with the next-to-leading order perturbative quantum
chromodynamic (NLO pQCD) calculations with a specific fragmentation scheme. The
p/pi^{+} and pbar/pi^{-}has been studied at high p_{T}. The nuclear
modification factor (R_{dAu}) shows that the identified particle Cronin effects
around midrapidity are significantly non-zero for charged pions and to be even
larger for protons at intermediate p_{T} (2 < p_{T} < 5 GeV/c).Comment: Talk given at Particles and Nuclei International Conference, Santa
Fe,NM-October 24-28,200
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