Centrality Dependence of π0 and η Production at Large Transverse Momentum in sNN=200GeV d+Au Collisions

S. S. Adler et al. (PHENIX Collaboration)
Phys. Rev. Lett. 98, 172302 – Published 24 April 2007

Abstract

The dependence of transverse momentum spectra of neutral pions and η mesons with pT<16GeV/c and pT<12GeV/c, respectively, on the centrality of the collision has been measured at midrapidity by the PHENIX experiment at the BNL Relativistic Heavy Ion Collider (RHIC) in d+Au collisions at sNN=200GeV. The measured yields are compared to those in p+p collisions at the same sNN scaled by the number of underlying nucleon-nucleon collisions in d+Au. At all centralities, the yield ratios show no suppression, in contrast to the strong suppression seen for central Au+Au collisions at RHIC. Only a weak pT and centrality dependence can be observed.

  • Figure
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  • Received 23 October 2006

DOI:https://doi.org/10.1103/PhysRevLett.98.172302

©2007 American Physical Society

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Vol. 98, Iss. 17 — 27 April 2007

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