Edmundo García, B. B. Back, M. D. Baker, D. S. Barton, S. Basilev, B. D. Bates, R. Baum, R. R. Betts, A. Białas, R. Bindel, W. Bogucki, A. Budzanowski, W. Busza, A. Carroll, M. Ceglia, Y. H. Chang, A. E. Chen, T. Coghen, C. Conner, W. CzyzB. Da̧browski, M. P. Decowski, M. Despet, P. Fita, J. Fitch, M. Friedl, K. Gałuszka, R. Ganz, N. George, J. Godlewski, C. Gomes, E. Griesmayer, K. Gulbrandsen, S. Gushue, J. Halik, C. Halliwell, P. Haridas, A. Hayes, G. A. Heintzelman, C. Henderson, R. Hollis, R. Hołyński, B. Holzman, E. Johnson, J. Kane, J. Katzy, W. Kita, J. Kotuła, H. Kraner, W. Kucewicz, P. Kulinich, C. Law, M. Lemler, J. Ligocki, W. T. Lin, S. Manly, D. McLeod, J. Michałowski, A. Mignerey, J. Mülmenstädt, M. Neal, R. Nouicer, A. Olszewski, R. Pak, I. C. Park, M. Patel, H. Pernegger, M. Plesko, C. Reed, L. P. Remsberg, M. Reuter, C. Roland, G. Roland, D. Ross, L. Rosenberg, J. Ryan, A. Sanzgiri, P. Sarin, P. Sawicki, J. Scaduto, J. Shea, J. Sinacore, W. Skulski, S. G. Steadman, G. S.F. Stephans, P. Steinberg, A. Stra̧czek, M. Stodulski, M. Strȩk, Z. Stopa, A. Sukhanov, K. Surowiecka, J. L. Tang, R. Teng, A. Trzupek, C. M. Vale, G. J. Van Nieuwenhuizen, R. Verdier, B. Wadsworth

Research output: Contribution to journalArticlepeer-review


The relativistic heavy ion collider (RHIC) at Brookhaven national laboratory delivered in June 2000 the first collisions between Au nuclei at the highest center-of-mass energies achieved in a controlled enviroment to date. PHOBOS is one of the four experiments installed during this phase of RHIC running. This paper will describe the PHOBOS experiment, and discuss the results of the first physics measurement, the pseudo rapidity densities of primary charged particles near mid rapidity in central Au+Au collisions at two different energies, √SNN = 56 and 130 GeV. The observed densities are higher than those previously observed in any collisions, and the rate of increase between the two energies is larger than that for nucleon-nucleon collisions at comparable beam energies. This talk will describe the PHOBOS experiment, discuss the first physics measurement, and conclude with the present status of the experiment, the physics analysis and the perspectives for the future.

Original languageEnglish
Pages (from-to)98-103
Number of pages6
JournalRevista Mexicana de Fisica
Issue numberSUPPL. 2
StatePublished - Dec 2001


  • Relativistic heavy ion collisions


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