We have measured the cross section of gamma + D-*+/- production in <(p)over bar p> collisions at root s = 1.8 TeV using the Collider Detector at Fermilab. In this kinematic region, the Compton scattering process (g(c) --> gamma(c)) is expected to dominate and thus provide a direct link to the charm quark density in the proton. From the 45 +/- 18 gamma + D-*+/- candidates in a 16.4 pb(-1) data sample, we have determined the production cross section to be 0.38 +/- 0.15(stat) +/- 0.11(syst) nb for the rapidity range y(D-*+/-) < 1.2 and y(gamma) < 0.9, and for the transverse momentum range p(T)(D-*+/-) > 6 GeV/c and 16 < p(T)(gamma) < 40 GeV/c. The measured cross section is compared to a theoretical prediction.

F., A., H., A., A., A., M. G., A., S. R., A., D., A., et al. (1996). Measurement of the gamma+D-*+/- cross section in (p)over-bar-p collisions at root s=1.8TeV. PHYSICAL REVIEW LETTERS, 77(25), 5005-5010 [10.1103/PhysRevLett.77.5005].

Measurement of the gamma+D-*+/- cross section in (p)over-bar-p collisions at root s=1.8TeV

PAOLETTI, RICCARDO;
1996-01-01

Abstract

We have measured the cross section of gamma + D-*+/- production in <(p)over bar p> collisions at root s = 1.8 TeV using the Collider Detector at Fermilab. In this kinematic region, the Compton scattering process (g(c) --> gamma(c)) is expected to dominate and thus provide a direct link to the charm quark density in the proton. From the 45 +/- 18 gamma + D-*+/- candidates in a 16.4 pb(-1) data sample, we have determined the production cross section to be 0.38 +/- 0.15(stat) +/- 0.11(syst) nb for the rapidity range y(D-*+/-) < 1.2 and y(gamma) < 0.9, and for the transverse momentum range p(T)(D-*+/-) > 6 GeV/c and 16 < p(T)(gamma) < 40 GeV/c. The measured cross section is compared to a theoretical prediction.
1996
F., A., H., A., A., A., M. G., A., S. R., A., D., A., et al. (1996). Measurement of the gamma+D-*+/- cross section in (p)over-bar-p collisions at root s=1.8TeV. PHYSICAL REVIEW LETTERS, 77(25), 5005-5010 [10.1103/PhysRevLett.77.5005].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11365/39347
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