Phys. Rev. Lett. 91, 072302 (2003) [4 pages]Centrality Dependence of Charged-Hadron Transverse-Momentum Spectra in d+Au Collisions at √sNN=200 GeVReceived 18 June 2003; published 15 August 2003 We have measured transverse momentum distributions of charged hadrons produced in d+Au collisions at √sNN=200 GeV. The spectra were obtained for transverse momenta 0.25<pT<6.0 GeV/c, in a pseudorapidity range of 0.2<η<1.4 in the deuteron direction. The evolution of the spectra with collision centrality is presented in comparison to p+p̅ collisions at the same collision energy. With increasing centrality, the yield at high transverse momenta increases more rapidly than the overall particle density, leading to a strong modification of the spectral shape. This change in spectral shape is qualitatively different from observations in Au+Au collisions at the same energy. The results provide important information for discriminating between different models for the suppression of high-pT hadrons observed in Au+Au collisions. © 2003 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.91.072302
DOI:
10.1103/PhysRevLett.91.072302
PACS:
25.75.Dw, 25.75.Gz
|
|
About | Terms and Conditions | Subscriptions | Search | Help
Use of the American Physical Society websites and journals implies that the user has read and agrees to our Terms and Conditions and any applicable Subscription Agreement. Physical Review®, Physical Review Letters®, Reviews of Modern Physics®, and Physical Review Special Topics® are trademarks of the American Physical Society.