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Phys. Rev. Lett. 77, 5005–5010 (1996)

Measurement of the γ+D*± Cross Section in p̅ p Collisions at s = 1.8TeV

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F. Abe et al. (CDF Collaboration)
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Received 26 June 1996; published in the issue dated 16 December 1996

We have measured the cross section of γ+D*± production in p̅ p collisions at s = 1.8TeV using the Collider Detector at Fermilab. In this kinematic region, the Compton scattering process (gcγc) is expected to dominate and thus provide a direct link to the charm quark density in the proton. From the 45±18 γ+D*± candidates in a 16.4pb-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(γ)|<0.9, and for the transverse momentum range pT(D*±)>6GeV/c and 16<pT(γ)<40GeV/c. The measured cross section is compared to a theoretical prediction.

© 1996 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.77.5005
DOI:
10.1103/PhysRevLett.77.5005
PACS:
13.85.Ni, 13.85.Qk