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

Autor: PHENIX Collaboration, Hachiya, Takashi, Homma, Kensuke, Kohara, Ryota, Nakamura, Tomoaki, Shigaki, Kenta, Sugitate, Toru, Tsuchimoto, Yuji
Jazyk: angličtina
Rok vydání: 2007
Předmět:
Zdroj: Physical Review Letters. 98(17):172302-172302-6
Popis: The dependence of transverse momentum spectra of neutral pions and η mesons with pT < 16 GeV/c and pT < 12 GeV/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 = 200 GeV. 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.
Databáze: OpenAIRE