Are high-p(T) pions suppressed in Pb + Pb collisions at s(NN)**(1/2) = 17.3-GeV?

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...

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Detalles Bibliográficos
Autor principal: Reygers, Klaus
Lenguaje:eng
Publicado: 2007
Materias:
Nuclear Physics
Acceso en línea:https://dx.doi.org/10.1088/0954-3899/34/8/S98
http://cds.cern.ch/record/1012792
Descripción
Sumario: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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