Oak Ridge National Laboratory

Physics Division

Physics Division Seminars

Physics Division Seminars bring us speakers on a variety of physics related subjects. Usually these are held in the Building 6008 large Conference Room, at 3:00 pm on the chosen day, but times and locations may vary. For more information, contact our seminar chairman,

Alfredo Galindo-Uribarri
Tel (Office): (865) 574-6124  (FAX): (865) 574-1268


Thu., June 05, 2003, at 10:30 a.m.

Global observables and J/Psi and open charm measurements at RHIC/PHENIX

David Silvermyr, Los Alamos National Laboratory
Building 6008, Conference Room

The Relativistic Heavy Ion Collider (RHIC) has made it possible to study hadronic matter under unprecedented conditions in terms of temperature and energy density. Global variables, such as charged particle multiplicity and transverse energy, are essential for the characterization of nuclear collisions at ultra-relativistic energies. To study the hot and dense matter created in the early stage of high energy heavy ion collisions, particles carrying charm or bottom quarks are sensitive probes. The PHENIX experiment at RHIC can study open charm production via single lepton spectra and charmonium (J/Psi) via the dilepton channels. PHENIX has measured charged particle multiplicity and transverse energy and inclusive single electron spectra at midrapdity in Au-Au collisions at sqrt{s_{NN}} = 130 and 200 GeV. PHENIX has also studied J/Psi production at xF=0 via electrons and at forward and backward xF via muons for p-p, d-Au and Au-Au collisions at sqrt{s_{NN}} = 200 GeV. An overview of these results will be presented.

Refreshments will be served at 10:15 a.m.