Measurement of the Associated $\gamma +{\mu }^{\pm }$ Production Cross Section in $p\bar{p}$ Collisions at $\sqrt{s}=1.8$ TeV

Abstract

We present the first measurement of associated direct photon + muon production in hadronic collisions, from a sample of 1.8 TeV $p\bar{p}$ collisions recorded with the Collider Detector at Fermilab. Quantum chromodynamics (QCD) predicts that these events are primarily from the Compton scattering process $cg\to c\gamma$, with the final state charm quark producing a muon. Hence this measurement is sensitive to the charm quark content of the proton. The measured cross section of $29\pm 9p{b}^{-1}$ is compared to a leading-order QCD parton shower model as well as a next-to-leading-order QCD calculation.

12 pages, 4 figures Added more detailed description of muon background estimate

Cited by in corpus (5)

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