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Measurement of the Differential $\gamma+2~b$-Jet Cross Section and the Ratio $\sigma$($\gamma+2~b$-jets)/$\sigma$($\gamma+b$-jet) in $p\bar{p}$ Collisions at $\sqrt{s}$ = 1.96 TeV

The D0 collaboration
Phys.Lett.B 737 (2014) 357-365, 2014.

Abstract (data abstract)
Fermilab-Tevatron. We present the first measurements of the differential cross section, DSIG/DPT(GAMMA), for the production of an isolated photon in association with at least two b-quark jets. The measurements consider photons with rapidities ABS(YRAP(GAMMA)) < 1.0 and transverse momenta 30 < PT(GAMMA) < 200 GeV. The b-quark jets are required to have PT(JET) > 15 GeV and ABS(YRAP(JET)) < 1.5. The ratio of differential production cross sections for GAMMA + 2 BJETs to GAMMA + BJET as a function of PT(GAMMA) is also presented. The results are based on data corresponding to 8.7 +- 0.5 fb^{-1} of proton-antiproton collisions at sqrt(s) = 1.96 TeV collected with the D0 detector from June 2006 to September 2011 at the Fermilab Tevatron Collider.

  • Table 1

    Data from Table 1


    The differential GAMMA+2BJET production cross section, DSIG/DPT(GAMMA), in bins of PT(GAMMA).

  • Table 2

    Data from Table 2


    The differential GAMMA+BJET production cross section, DSIG/DPT(GAMMA), in bins of PT(GAMMA).

  • Table 3

    Data from Table 3


    The SIG(GAMMA 2BJET)/SIG(GAMMA BJET) cross section ratio in bins of PT(GAMMA).

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