A study of the associated production of photons and b-quark jets in p-pbar collisions at sqrt{s} = 1.96 TeV

Abstract

The cross section for photon production in association with at least one jet containing a $b$-quark hadron has been measured in proton antiproton collisions at $\sqrt{s}=1.96$ TeV. The analysis uses a data sample corresponding to an integrated luminosity of 340 pb$^{-1}$ collected with the CDF II detector. Both the differential cross section as a function of photon transverse energy $E_T^γ$, $d σ$($p \overline{p} \to γ+ \geq 1 b$-jet)/$d E_T^γ$ and the total cross section $σ$($p \overline{p} \to γ+ \geq 1 b$-jet; $E_T^γ> 20$ GeV) are measured. Comparisons to a next-to-leading order prediction of the process are presented.

submitted to PRL