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Adler, SS; Amirikas, R; Aphecetche, L; Aronson, SH; Averbeck, R; Awes, TC; Azmoun, R; Baldisseri, A; Bazilevsky, A; Boissevain, JG; Buesching, H; Bumazhnov, V; Burward-Hoy, JM; Camard, X; Chand, P; Chiba, J; Choi, J; Choudhury, RK; Cianciolo, V; Cobigo, Y; Constantin, P; Delagrange, H; Deshpande, A; Dietzsch, O; Drapier, O; Dutta, D; Enokizono, A; Ewell, L; Fokin, SL; Fox, BD; Frantz, JE; Frawley, AD; Harvey, M; Hemmick, TK; Hill, JC; Isenhower, L; Isupov, A; Jang, WY; Johnson, BM; Jouan, D; Kametani, S; Kikuchi, J; Kim, DH; Kim, DJ; Kim, DW; Kistenev, E; Koehler, D; Kotchetkov, D; Kurita, K; Leckey, S; Liu, Y; Makdisi, YI; Manko, VI; Masui, H; Matathias, F; Matsumoto, T; Messer, F; Miake, Y; Milov, A; Mohanty, AK; Moss, JM; Murata, J; Nagle, JL; Nilsson, Pål; Nystrand, Joakim; Ogilvie, CA; Okada, K; Ono, M; Pal, D; Palounek, APT; Pantuev, VS; Papavassiliou, V; Park, J; Parmar, A; Peitzmann, T; Plasil, F; Purschke, ML; Reygers, K; Riabov, Y; Santo, R; Sato, S; Sawada, S; Sivertz, M; Sorensen, SP; Stepanov, M; Ster, A; Taketani, A; Tarjan, P; Thomas, TL; Tserruya, I; Tsuruoka, H; Tuli, SK; Tyurin, N; Velkovska, J; Vinogradov, AA; Volkov, MA; White, SN; Yokkaichi, S; Zhou, S; Zolin, L
Physical review letters, 08/2003, Letnik: 91, Številka: 7: 072301Journal Article
Transverse momentum spectra of neutral pions in the range 1<p(T)<10 GeV/c have been measured at midrapidity by the PHENIX experiment at BNL RHIC in Au+Au collisions at roots(NN)=200 GeV. The pi(0) multiplicity in central reactions is significantly below the yields measured at the same roots(NN) in peripheral Au+Au and p+p reactions scaled by the number of nucleon-nucleon collisions. For the most central bin, the suppression factor is similar to2.5 at p(T)=2 GeV/c and increases to similar to4-5 at p(T)approximate to4 GeV/c. At larger p(T), the suppression remains constant within errors. The deficit is already apparent in semiperipheral reactions and increases smoothly with centrality.
