2,922 research outputs found

    Identified particle transverse momentum spectra in p+p and d+Au collisions at sqrt{s_NN} = 200 GeV

    Get PDF
    The transverse momentum (pTp_{\mathrm T}) spectra for identified charged pions, protons and anti-protons from pp+pp and dd+Au collisions are measured around midrapidity (∣\midy∣\mid << 0.5) over the range of 0.3 << pTp_{\mathrm T} << 10 GeV/cc at sNN\sqrt{s_{\mathrm {NN}}} = 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
    • …
    corecore