https://doi.org/10.1140/epjc/s10052-009-0937-y
Regular Article - Experimental Physics
ϒ production in STAR
Physics Department, University of California, Davis, CA, 95616, USA
* e-mail: debasish@rcf.rhic.bnl.gov
** e-mail: debdas@ucdavis.edu
Received:
30
September
2008
Revised:
31
January
2009
Published online:
17
February
2009
The study of formation and interaction of heavy quarkonia in relativistic heavy ion collisions provides important insight into the properties of the produced medium. Lattice QCD studies show sequential suppression of quarkonia states with increasing temperature; which affirms that a full spectroscopy, including bottomonium, can provide us a thermometer for the matter produced under extreme conditions in relativistic heavy ion collisions and the most direct probe of deconfinement. With the completion of the STAR Electromagnetic Calorimeter and with the increased luminosity provided by RHIC in Runs 6 and 7, the study of ϒ production via the di-electron channel becomes possible. We present preliminary results on ϒ measurements in pp collisions (from Run 6) along with preliminary results from Au+Au collisions (in Run 7) at
GeV from the STAR experiment.
© Springer-Verlag , 2009
