Absence of Suppression in Particle Production at Large Transverse Momentum insNN=200 GeVd+AuCollisions

Transverse momentum spectra of charged hadrons with ${p}_{T}<8\text{ }\text{ }\mathrm{G}\mathrm{e}\mathrm{V}/c$ and neutral pions with ${p}_{T}<10\text{ }\text{ }\mathrm{G}\mathrm{e}\mathrm{V}/c$ have been measured at midrapidity by the PHENIX experiment at BNL RHIC in $d+\mathrm{A}\mathrm{u}$ collisions at $\sqrt{{s}_{NN}}=200\text{ }\text{ }\mathrm{G}\mathrm{e}\mathrm{V}$. The measured yields are compared to those in $p+p$ collisions at the same $\sqrt{{s}_{NN}}$ scaled up by the number of underlying nucleon-nucleon collisions in $d+\mathrm{A}\mathrm{u}$. The yield ratio does not show the suppression observed in central $\mathrm{A}\mathrm{u}+\mathrm{A}\mathrm{u}$ collisions at RHIC. Instead, there is a small enhancement in the yield of high momentum particles.

Absence of Suppression in Particle Production at Large Transverse Momentum insNN=200 GeVd+AuCollisions | Litlas