Production of direct photons and neutral mesons at large transverse momenta byandbeams at 500 GeV/c
- 1 July 1993
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review D
- Vol. 48 (1) , 5-28
- https://doi.org/10.1103/physrevd.48.5
Abstract
We present results from the initial run of Fermilab experiment E706. The data include incident and beams at 500 GeV/c on Be and Cu targets, and span the kinematic ranges of transverse momentum and rapidity of GeV/c and , respectively. We have measured cross sections for and direct-photon production, as well as the production ratio. From the data on Be and Cu, we have extracted the nuclear dependence of production, parametrized as . The cross sections are compared with next-to-leading-log QCD predictions for different choices of the QCD momentum scales and several sets of parton distribution functions.
Keywords
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