Nuclear Modification Factor for Charged Pions and Protons at Forward Rapidity in Central Au+Au Collisions at 200 GeV
- Arsene, I.
- Bearden, I.G.
- Beavis, D.
- Besliu, C.
- Budick, B.
- Boggild, H.
- Chasman, C.
- Christensen, C.H.
- Christiansen, P.
- Debbe, R.
- Enger, E.
- Gaardhoje, J.J.
- Germinario, M.
- Hagel, K.
- Holm, A.
- Ito, H.
- Jipa, A.
- Jundt, F.
- Jordre, J.I.
- Jorgensen, C.E.
- Karabowicz, R.
- Kim, E.J.
- Kozik, T.
- Larsen, T.M.
- Lee, J.H.
- Lee, Y.K.
- Lindal, S.
- Lystad, G.
- Lovhoiden, G.
- Majka, Z.
- Makeev, A.
- Mikelsen, M.
- Murray, M.
- Natowitz, J.
- Nielsen, B.S.
- Ouerdane, D.
- Laneta, R.P
- Rami, F.
- Ristea, C.
- Ristea, O.
- Rohrich, D.
- Samset, B.H.
- Sandberg, D.
- Sanders, S.J.
- Staszel, P.
- Tveter, T.S.
- Videbeak, F.
- Wada, R.
- Yang, H.
- Yin9, Z.
- S. Zgura, I.
DOIAbstract
We present spectra of charged pions and protons in 0-10% central Au+Au collisions at √sNN = 200 GeV at mid-rapidity (y = 0) and forward pseudorapidity ($\eta$ = 2.2) measured with the BRAHMS experiment at RHIC. The spectra are compared to spectra from p+p collisions at the same energy scaled by the number of binary collisions. The resulting nuclear modification factors for central Au+Au collisions at both y = 0 and $\eta$ = 2.2 exhibit suppression for charged pions but not for (anti- )protons at intermediate pT . The $\bar{p}/\pi^−$ ratios have been measured up to pT ∼ 3 GeV/c at the two rapidities and the results indicate that a significant fraction of the charged hadrons produced at intermediate pT range are (anti-)protons at both mid-rap...
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