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1.
Ratios of charged antiparticles-to-particles near mid-rapidity in Au + Au collisions at sqrt[s(NN)]=130 GeV.
Back, B B; Baker, M D; Barton, D S; Betts, R R; Bindel, R; Budzanowski, A; Busza, W; Carroll, A; Decowski, M P; Garcia, E; George, N; Gulbrandsen, K; Gushue, S; Halliwell, C; Heintzelman, G A; Henderson, C; Holynski, R; Hofman, D; Holzman, B; Johnson, E; Kane, J; Katzy, J; Khan, N; Kucewicz, W; Kulinich, P; Lin, W T; Manly, S; McLeod, D; Michalowski, J; Mignerey, A; Mülmenstädt, J; Nouicer, R; Olszewski, A; Pak, R; Park, I C; Pernegger, H; Reed, C; Remsberg, L P; Reuter, M; Roland, C; Roland, G; Rosenberg, L; Sarin, P; Sawicki, P; Skulski, W; Steadman, S G; Stephans, G S; Steinberg, P; Stodulski, M; Sukhanov, A.
Phys Rev Lett ; 87(10): 102301, 2001 Sep 03.
Artigo em Inglês | MEDLINE | ID: mdl-11531474

RESUMO

We have measured the ratios of antiparticles to particles for charged pions, kaons, and protons near mid-rapidity in central Au+Au collisions at sqrt[s(NN)] = 130 GeV. We observe / = 1.00+/-0.01(stat)+/-0.02(syst), / = 0.91+/-0.07(stat)+/-0.06(syst), and

/

= 0.60+/-0.04(stat)+/-0.06(syst). The / and

/

ratios give a consistent estimate of the baryo-chemical potential mu(B) of 45 MeV, a factor of 5-6 smaller than in central Pb+Pb collisions at sqrt[s(NN)] = 17.2 GeV.

2.
Charged-particle pseudorapidity density distributions from Au+Au collisions at sqrt[s(NN)]=130 GeV.
Back, B B; Baker, M D; Barton, D S; Betts, R R; Bindel, R; Budzanowski, A; Busza, W; Carroll, A; Decowski, M P; Garcia, E; George, N; Gulbrandsen, K; Gushue, S; Halliwell, C; Heintzelman, G A; Henderson, C; Hofman, D J; Holynski, R; Holzman, B; Johnson, E; Kane, J L; Katzy, J; Khan, N; Kucewicz, W; Kulinich, P; Lin, W T; Manly, S; McLeod, D; Michalowski, J; Mignerey, A C; Mülmenstädt, J; Nouicer, R; Olszewski, A; Pak, R; Park, I C; Pernegger, H; Reed, C; Remsberg, L P; Reuter, M; Roland, C; Roland, G; Rosenberg, L; Sarin, P; Sawicki, P; Skulski, W; Steadman, S G; Steinberg, P; Stephans, G S; Stodulski, M; Sukhanov, A.
Phys Rev Lett ; 87(10): 102303, 2001 Sep 03.
Artigo em Inglês | MEDLINE | ID: mdl-11531476

RESUMO

The charged-particle pseudorapidity density dN(ch)/d eta has been measured for Au+Au collisions at sqrt[s(NN)] = 130 GeV at RHIC, using the PHOBOS apparatus. The total number of charged particles produced for the 3% most-central Au+Au collisions for /eta/

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