Authors
STAR Collaboration, J Adams, C Adler, MM Aggarwal, Z Ahammed, J Amonett, BD Anderson, D Arkhipkin, GS Averichev, SK Badyal, J Balewski, O Barannikova, LS Barnby, J Baudot, S Bekele, VV Belaga, R Bellwied, J Berger, BI Bezverkhny, S Bhardwaj, AK Bhati, H Bichsel, A Billmeier, LC Bland, CO Blyth, BE Bonner, M Botje, A Boucham, A Brandin, A Bravar, RV Cadman, XZ Cai, H Caines, M Calderón de La Barca Sánchez, J Carroll, J Castillo, D Cebra, P Chaloupka, S Chattopadhyay, HF Chen, Y Chen, SP Chernenko, M Cherney, A Chikanian, W Christie, JP Coffin, TM Cormier, JG Cramer, HJ Crawford, D Das, S Das, AA Derevschikov, L Didenko, T Dietel, WJ Dong, X Dong, JE Draper, F Du, AK Dubey, VB Dunin, JC Dunlop, MR Dutta Majumdar, V Eckardt, LG Efimov, V Emelianov, J Engelage, G Eppley, B Erazmus, M Estienne, P Fachini, V Faine, J Faivre, R Fatemi, K Filimonov, P Filip, E Finch, Y Fisyak, D Flierl, KJ Foley, J Fu, CA Gagliardi, N Gagunashvili, J Gans, MS Ganti, L Gaudichet, M Germain, F Geurts, V Ghazikhanian, P Ghosh, JE Gonzalez, O Grachov, O Grebenyuk, S Gronstal, D Grosnick, M Guedon, SM Guertin, A Gupta, TD Gutierrez, TJ Hallman, A Hamed, D Hardtke, JW Harris, M Heinz, TW Henry, S Heppelmann, B Hippolyte, A Hirsch, E Hjort, GW Hoffmann, M Horsley, HZ Huang, SL Huang, E Hughes, TJ Humanic, G Igo, A Ishihara, P Jacobs, WW Jacobs, Małgorzata Janik, H Jiang, I Johnson, PG Jones, EG Judd, S Kabana, M Kaplan, D Keane, V Yu Khodyrev, J Kiryluk, Adam Kisiel, J Klay, SR Klein, A Klyachko, DD Koetke, T Kollegger, M Kopytine, L Kotchenda, AD Kovalenko, M Kramer, P Kravtsov, VI Kravtsov, K Krueger, C Kuhn, AI Kulikov, A Kumar, GJ Kunde, CL Kunz, R Kh Kutuev, AA Kuznetsov, MAC Lamont, JM Landgraf
Publication date
2005
Journal
Physics Letters B
Volume
612
Description
We report the STAR measurement of ϕ meson production in Au+Au and p+p collisions at sNN=200GeV. Using the event mixing technique, the ϕ 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 ϕ 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 ϕ production in central Au+Au collisions is suppressed relative to peripheral collisions when scaled by the number of binary collisions (bin\\textgreater\). The systematics of t\\textgreater\ versus centrality and the constant ϕ/K- ratio versus beam species, centrality, and collision energy rule out kaon coalescence as the dominant mechanism for ϕ production.
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Scholar articles
S Collaboration, J Adams, C Adler, MM Aggarwal… - Physics Letters B, 2005