Heavy Flavour Production at Tevatron and Parton Shower Effects

Details Heavy Flavour Production at Tevatron and Parton Shower Effects Heavy Flavour Production at Tevatron and Parton Shower Effects

2010-09-26

arxiv.org/abs/1009.5067v3

JHEP 1101:085,2011

Physics

High Energy Physics

High Energy Physics - Phenomenology

Fig 8,9 10 replaced, small corrections in text A discussion of the delta phi results is added

Scientific paper

10.1007/JHEP01(2011)085

We present hadron-level predictions from the Monte Carlo generator Cascade and numerical calculations of charm and beauty production at the Fermilab Tevatron within the framework of the $k_T$-factorization QCD approach. Our consideration is based on the CCFM-evolved unintegrated gluon densities in a proton. The performed analysis covers the total and differential cross sections of open charm and beauty quarks, $B$ and $D$ mesons (or rather muons from their semileptonic decays) and the total and differential cross sections of $b \bar b$ di-jet hadroproduction. We study the theoretical uncertainties of our calculations and investigate the effects coming from parton showers in initial and final states. Our predictions are compared with the recent experimental data taken by the D0 and CDF collaborations. Special attention is put on the specific angular correlations between the final-state particles. We demonstrate that the final state parton shower plays a crucial role in the description of such observables. The decorrelated part of angular separations can be fully described, if the process $gg^*\rightarrow gg$ is included.

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