Physics – High Energy Physics – High Energy Physics - Experiment
Scientific paper
1997-02-25
Phys.Rev.D56:1391-1406,1997
Physics
High Energy Physics
High Energy Physics - Experiment
45 pages including 24 pages of figures with captions
Scientific paper
10.1103/PhysRevD.56.1391
We present results on the production of high transverse momentum charm mesons in collisions of 515 GeV/c negative pions with beryllium and copper targets. The experiment recorded a large sample of events containing high transverse momentum showers detected in an electromagnetic calorimeter. From these data, a sample of charm mesons has been reconstructed via their decay into the fully charged K pi pi mode. A measurement of the single inclusive transverse momentum distribution of charged D mesons from 1 to 8 GeV/c is presented. An extrapolation of the measured differential cross section yields an integrated charged D cross section of 11.4+-2.7(stat)+-3.3(syst) microbarns per nucleon for charged D mesons with Feynman x greater than zero. The data are compared with expectations based upon next-to-leading order perturbative QCD, as well as with results from PYTHIA. We also compare our integrated charged D cross section with measurements from other experiments.
Apanasevich L.
Fermilab E706 Collaboration
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