Pseudorapidity dependence of charged hadron transverse momentum spectra ind+Aucollisions atsNN=200GeV

B. B. Back, M. D. Baker, M. Ballintijn, D. S. Barton, B. Becker, R. R. Betts, A. A. Bickley, R. Bindel, W. Busza, A. Carroll, M. P. Decowski, E. García (+49 others)
2004 Physical Review C  
We have measured the transverse momentum distributions of charged hadrons in d+Au collisions at sqrt sNN = 200 GeV in the range of 0.5 < p_T < 4.0 GeV/c. The total range of pseudorapidity, eta, is 0.2 < eta < 1.4, where positive eta is in the deuteron direction. The data has been divided into three regions of pseudorapidity, covering 0.2 < eta < 0.6, 0.6 < \eta < 1.0, and 1.0 < eta < 1.4 and has been compared to charged hadron spectra from p+pbar collisions at the same energy. There is a
more » ... . There is a significant change in the spectral shape as a function of pseudorapidity. As eta increases we see a decrease in the nuclear modification factor RdAu.
doi:10.1103/physrevc.70.061901 fatcat:g6j72q7ocrg6ja6l3fb3p4s6km