F. Abe et al., PROMPT PHOTON CROSS-SECTION MEASUREMENT IN (P)OVER-BARP COLLISIONS ATROOT-S = 1.8 TEV, Physical review. D. Particles and fields, 48(7), 1993, pp. 2998-3025
The first prompt photon measurement from the CDF experiment at the Fer
milab ppBAR Collider is presented. Two independent methods are used to
measure the cross section: one for high transverse momentum (P(T)) an
d one for lower P(T). Comparisons to various theoretical calculations
are shown. The. cross section agrees qualitatively with QCD calculatio
ns but has a steeper slope at low P(T).