Measurements of D* Mesons in Jets From P plus P Collisions at Root S=200 GeV
We report the measurement of charged D* mesons in inclusive jets produced in proton-proton collisions at a center-of-mass energy root s = 200 GeV with the STAR experiment at the Relativistic Heavy Ion Collider. For D* mesons with fractional momenta 0.2< z< 0.5 in inclusive jets with 11.5 GeV mean transverse energy, the production rate is found to be N(D*(+) + D*(-))/N(jet) = 0.015 +/- 0.008(stat) +/- 0.007(sys). This rate is consistent with perturbative QCD evaluation of gluon splitting into a pair of charm quarks and subsequent hadronization.
Grosnick, David; Koetke, Donald D.; Manweiler, Robert; Stanislaus, Shirvel; Webb, J. C.; and STAR Collaboration, "Measurements of D* Mesons in Jets From P plus P Collisions at Root S=200 GeV" (2009). Physics and Astronomy Faculty Publications. 62.