Published in Physical Review Letters, Volume 94, Issue 6, February 17, 2005, pages 062301-1-062301-6.
STAR is composed of 63 institutions from 13 countries, with a total of 611 collaborators. A variety of personnel participate in the collaboration, including students, university faculty and staff, national laboratory staff, and engineers.
For more information on the STAR Collaboration, visit https://www.star.bnl.gov
The definitive version is available at https://doi.org/10.1103/PhysRevLett.94.062301.
Midrapidity open charm spectra from direct reconstruction of D0(D0)→K∓π± in d+Au collisions and indirect electron-positron measurements via charm semileptonic decays in p+p and d+Au collisions at √sNN=200 GeV are reported. The D0(D0) spectrum covers a transverse momentum (pT) range of 0.1T<3 GeV/c, whereas the electron spectra cover a range of 1T<4 GeV/c. The electron spectra show approximate binary collision scaling between p+p and d+Au collisions. From these two independent analyses, the differential cross section per nucleon-nucleon binary interaction at midrapidity for open charm production from d+Au collisions at BNL RHIC is dσNNc¯c/dy=0.30±0.04(stat)±0.09(syst) mb. The results are compared to theoretical calculations. Implications for charmonium results in A+A collisions are discussed.
Number of Pages
This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Physical Society.
NOTE: At the time of publication, the author Thomas Gutierrez was not yet affiliated with Cal Poly.