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25 April 2024

» pubmed » pmid12935007

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Centrality dependence of charged-hadron transverse-momentum spectra in d+Au collisions at sqrt[s(NN)]=200 GeV
B B Back ; M D Baker ; M Ballintijn ; D S Barton ; B Becker ; R R Betts ; A A Bickley ; R Bindel ; A Budzanowski ; W Busza ; A Carroll ; M P Decowski ; E García ; T Gburek ; N George ; K Gulbrandsen ; S Gushue ; C Halliwell ; J Hamblen ; A S Harrington ; C Henderson ; D J Hofman ; R S Hollis ; R Ho?y?ski ; B Holzman ; A Iordanova ; E Johnson ; J L Kane ; N Khan ; P Kulinich ; C M Kuo ; J W Lee ; W T Lin ; S Manly ; A C Mignerey ; A Noell ; R Nouicer ; A Olszewski ; R Pak ; I C Park ; H Pernegger ; C Reed ; L P Remsberg ; C Rol ; G Rol ; J Sagerer ; P Sarin ; P Sawicki ; I Sedykh ; W Skulski ; C E Smith ; P Steinberg ; G S F Stephans ; A Sukhanov ; R Teng ; M B Tonjes ; A Trzupek ; C Vale ; G J van Nieuwenhuizen ; R Verdier ; G I Veres ; B Wadsworth ; F L H Wolfs ; B Wosiek ; K Wo?niak ; A H Wuosmaa ; B Wys?ouch ; J Zhang ; ;
Date:	15 Aug 2003
Journal:	Phys Rev Lett, 91 (7), 072302
Abstract:	We have measured transverse momentum distributions of charged hadrons produced in d+Au collisions at sqrt[s(NN)]=200 GeV. The spectra were obtained for transverse momenta 0.25<p(T)<6.0 GeV/c, in a pseudorapidity range of 0.2<eta<1.4 in the deuteron direction. The evolution of the spectra with collision centrality is presented in comparison to p+pmacr; 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-p(T) hadrons observed in Au+Au collisions.
Source:	PubMed, pmid12935007
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