Abstract
The production of deuterons and antideuterons in the transverse momentum range at midrapidity in collisions at has been studied by the PHENIX experiment at RHIC. A coalescence analysis, comparing the deuteron and antideuteron spectra with that of proton and antiproton, has been performed. The coalescence probability is equal for both deuterons and antideuterons and it increases as a function of , which is consistent with an expanding collision zone. Comparing (anti)proton yields, , with (anti)deuteron yields, , we estimate that . The nucleon phase space density is estimated from the coalescence measurement.
- Received 1 June 2004
DOI:https://doi.org/10.1103/PhysRevLett.94.122302
©2005 American Physical Society