Physics – Nuclear Physics – Nuclear Experiment
Scientific paper
2007-10-13
J.Phys.G35:044022,2008
Physics
Nuclear Physics
Nuclear Experiment
6 pages, 3 figures. Invited talk at the International Conference on Strangeness in Quark Matter, Levoca, Slovakia, June 24-29,
Scientific paper
10.1088/0954-3899/35/4/044022
We report first STAR measurement on two heavy-flavor particle correlations in p+p collisions at RHIC. Heavy-flavor (charm and bottom) events are identified and separated on a statistical basis by the azimuthal correlation of their decay electrons and open charm mesons, which yield important information about the underlying production mechanism. The azimuthal correlation distribution exhibits a two-peak structure which can be attributed to B decays on the near-side and predominantly charm pair production on the away-side. These assumptions are supported by dedicated simulations using PYTHIA and MC@NLO event generators. This novel correlation technique will allow comprehensive energy-loss measurements of heavy quarks in heavy-ion collisions.
for the STAR Collaboration
Mischke Andre
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