Measurement of the differential $γ+2~b$-jet cross section and the ratio $σ$($γ+2~b$-jets)/$σ$($γ+b$-jet) in $p\bar{p}$ collisions at $\sqrt{s}$=1.96 TeV

D0 Collaboration

doi:10.1016/j.physletb.2014.09.007

paper

Measurement of the differential $γ + 2 b$ -jet cross section and the ratio $σ$ ( $γ + 2 b$ -jets)/ $σ$ ( $γ + b$ -jet) in $p p ˉ$ collisions at $s$ =1.96 TeV

arXiv:1405.3964 · doi:10.1016/j.physletb.2014.09.007

Abstract

We present the first measurements of the differential cross section $d σ / d p_{T}^{γ}$ for the production of an isolated photon in association with at least two $b$ -quark jets. The measurements consider photons with rapidities $∣ y^{γ} ∣ < 1.0$ and transverse momenta $30 < p_{T}^{γ} < 200$ ~\GeV. The $b$ -quark jets are required to have $p_{T}^{j e t} > 15$ GeV and $∣ y^{j e t} ∣ < 1.5$ . The ratio of differential production cross sections for $γ + 2 b$ -jets to $γ + b$ -jet as a function of $p_{T}^{γ}$ is also presented. The results are based on the proton-antiproton collision data at $s =$ 1.96~\TeV collected with the D0 detector at the Fermilab Tevatron Collider. The measured cross sections and their ratios are compared to the next-to-leading order perturbative QCD calculations as well as predictions based on the $k_{T}$ -factorization approach and those from the SHERPA and PYTHIA Monte Carlo event generators.

10 pages, 8 figures, Submitted to Phys. Lett. B

Measurement of the differential $γ + 2 b$ -jet cross section and the ratio $σ$ ( $γ + 2 b$ -jets)/ $σ$ ( $γ + b$ -jet) in $p p ˉ$ collisions at $s$ =1.96 TeV

Abstract

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Measurement of the differential γ+2 b-jet cross section and the ratio σ(γ+2 b-jets)/σ(γ+b-jet) in ppˉ​ collisions at s​=1.96 TeV

Abstract

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Cited by in corpus (4)

Measurement of the differential $γ + 2 b$ -jet cross section and the ratio $σ$ ( $γ + 2 b$ -jets)/ $σ$ ( $γ + b$ -jet) in $p p ˉ$ collisions at $s$ =1.96 TeV