phi meson production in Au + Au and p + p collisions at root S-NN=200 GeV uri icon

abstract

  • We report the STAR measurement of meson production in Au+Au and p+p collisions at sNN=200GeV. Using the event mixing technique, the spectra and yields are obtained at mid-rapidity for five centrality bins in Au+Au collisions and for non-singly-diffractive p+p collisions. It is found that the transverse momentum distributions from Au+Au collisions are better fitted with a single-exponential while the p+p spectrum is better described by a double-exponential distribution. The measured nuclear modification factors indicate that production in central Au+Au collisions is suppressed relative to peripheral collisions when scaled by the number of binary collisions (Nbin). The systematics of pt versus centrality and the constant /K- ratio versus beam species, centrality, and collision energy rule out kaon coalescence as the dominant mechanism for production. 2005 Elsevier B.V. All rights reserved.

published proceedings

  • PHYSICS LETTERS B

author list (cited authors)

  • Adams, J., Adler, C., Aggarwal, M. M., Ahammed, Z., Amonett, J., Anderson, B. D., ... Zubarev, A. N.

citation count

  • 165

complete list of authors

  • Adams, J||Adler, C||Aggarwal, MM||Ahammed, Z||Amonett, J||Anderson, BD||Arkhipkin, D||Averichev, GS||Badyal, SK||Balewski, J||Barannikova, O||Barnby, LS||Baudot, J||Bekele, S||Belaga, VV||Bellwied, R||Berger, J||Bezverkhny, BI||Bhardwaj, S||Bhati, AK||Bichsel, H||Billmeier, A||Bland, LC||Blyth, CO||Bonner, BE||Botje, M||Boucham, A||Brandin, A||Bravar, A||Cadman, RV||Cai, XZ||Caines, H||Sanchez, MCD||Carroll, J||Castillo, J||Cebra, D||Chaloupka, P||Chattopadhyay, S||Chen, HF||Chen, Y||Chernenko, SP||Cherney, M||Chikanian, A||Christie, W||Coffin, JP||Cormier, TM||Cramer, JG||Crawford, HJ||Das, D||Das, S||Derevschikov, AA||Didenko, L||Dietel, T||Dong, WJ||Dong, X||Draper, JE||Du, F||Dubey, AK||Dunin, VB||Dunlop, JC||Majumdar, MRD||Eckardt, V||Efimov, LG||Emelianov, V||Engelage, J||Eppley, G||Erazmus, B||Estienne, M||Fachini, P||Faine, V||Faivre, J||Fatemi, R||Filimonov, K||Filip, P||Finch, E||Fisyak, Y||Flierl, D||Foley, KJ||Fu, J||Gagliardi, CA||Gagunashvili, N||Gans, J||Ganti, MS||Gaudichet, L||Germain, M||Geu

publication date

  • April 2005