Identified mid-rapidity particle spectra of $\pi^{\pm}$, $K^{\pm}$, and $p(\bar{p})$ from 200 GeV p+p and d+Au collisions are reported. A time-of-flight detector based on multi-gap resistive plate chamber technology is used for particle identification. The particle-species dependence of the Cronin effect is observed to be significantly smaller than that at lower energies. The ratio of the nuclear modification factor ($R_{dAu}$) between protons $(p+\bar{p})$ and charged hadrons ($h$) in the transverse momentum range $1.2<{p_{T}}<3.0$ GeV/c is measured to be $1.19\pm0.05$(stat)$\pm0.03$(syst) in minimum-bias collisions and shows little centrality dependence. The yield ratio of $(p+\bar{p})/h$ in minimum-bias d+Au collisions is found to be a factor of 2 lower than that in Au+Au collisions, indicating that the Cronin effect alone is not enough to account for the relative baryon enhancement observed in heavy ion collisions at RHIC.
The invariant yields of $\pi^{\pm}$, $K^{\pm}$, p and their anti-particles as a function of $p_{T}$ from d+Au and NSD p+p events at 200 GeV. The rapidity range was -0.5 $<$ y $<$ 0.0 with the direction of the outgoing Au ions as negative rapidity. Errors are statistical.
The invariant yields of $\pi^{\pm}$, $K^{\pm}$, p and their anti-particles as a function of $p_{T}$ from d+Au and NSD p+p events at 200 GeV. The rapidity range was -0.5 $<$ y $<$ 0.0 with the direction of the outgoing Au ions as negative rapidity. Errors are statistical.
The invariant yields of $\pi^{\pm}$, $K^{\pm}$, p and their anti-particles as a function of $p_{T}$ from d+Au and NSD p+p events at 200 GeV. The rapidity range was -0.5 $<$ y $<$ 0.0 with the direction of the outgoing Au ions as negative rapidity. Errors are statistical.
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