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arXiv · 0710.2599

Heavy-flavor correlation measurements via electron azimuthal correlations with open charm mesons

A. Mischke
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Abstract

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.

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A. Mischke. 2007-10-13. Heavy-flavor correlation measurements via electron azimuthal correlations with open charm mesons. https://doi.org/10.1088/0954-3899%2F35%2F4%2F044022

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