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Evidence from d+Au measurements for final-state suppression of high-p(T) hadrons in Au+Au collisions at RHIC |
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| Authors: | Adams J Adler C Aggarwal M M Ahammed Z Amonett J Anderson B D Anderson M Arkhipkin D Averichev G S Badyal S K Balewski J Barannikova O Barnby L S Baudot J Bekele S Belaga V V Bellwied R Berger J Bezverkhny B I Bhardwaj S Bhaskar P Bhati A K Bichsel H Billmeier A Bland L C Blyth C O Bonner B E Botje M Boucham A Brandin A Bravar A Cadman R V Cai X Z Caines H Calderón de la Barca Sánchez M Carroll J Castillo J Castro M Cebra D Chaloupka P Chattopadhyay S Chen H F Chen Y Chernenko S P Cherney M Chikanian A Choi B Christie W Coffin J P Cormier T M Cramer J G Crawford H J Das D Das S |
| Institution: | University of Birmingham, Birmingham, United Kingdom. |
| Abstract: | We report measurements of single-particle inclusive spectra and two-particle azimuthal distributions of charged hadrons at high transverse momentum (high p(T)) in minimum bias and central d+Au collisions at sqrts(NN)]=200 GeV. The inclusive yield is enhanced in d+Au collisions relative to binary-scaled p+p collisions, while the two-particle azimuthal distributions are very similar to those observed in p+p collisions. These results demonstrate that the strong suppression of the inclusive yield and back-to-back correlations at high p(T) previously observed in central Au+Au collisions are due to final-state interactions with the dense medium generated in such collisions. |
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