Are High-pT Pions Suppressed in Pb+Pb Collisions at sqrt(sNN) = 17.3 GeV?

Details Are High-pT Pions Suppressed in Pb+Pb Collisions at sqrt(sNN) = 17.3 GeV? Are High-pT Pions Suppressed in Pb+Pb Collisions at sqrt(sNN) = 17.3 GeV?

2007-01-23

arxiv.org/abs/nucl-ex/0701043v1

J.Phys.G34:S797-800,2007

Physics

Nuclear Physics

Nuclear Experiment

4 pages, 3 figures, To appear in the proceedings of the Quark Matter 2006 conference, Shanghai, China, 14-20 Nov 2006

Scientific paper

10.1088/0954-3899/34/8/S98

Transverse momentum spectra of neutral pions in the range 0.7 < pT < 3.2 GeV/c have been measured at 2.3 < eta < 3.0 by the WA98 experiment in p+C and p+Pb collisions at sqrt(sNN) = 17.3 GeV. Scaled by the number of nucleon-nucleon collisions (Ncoll) the pi^0 yields in p+C and p+Pb at pT ~ 2.0 - 2.5 GeV/c are higher than the respective yields in central Pb+Pb collisions with Npart > 300. This observation is qualitatively consistent with expectations from parton energy loss.

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