Production and correlations of b quarks at the LHC energies

Processes leading to b-quark production at the LHC energies are simulated by using the Pythia generator. For proton-proton interactions at 7 and 14 TeV, the cross sections for b-quark production are evaluated for three mechanisms that are taken into account in the Pythia generator. These are quark-pair production, the excitation of sea quarks, and gluon splitting. Correlations of azimuthal angles of b-quark emission and properties of accompanying particles in events induced by the various mechanisms of b-quark production are calculated. The results are compared with data from the CDF experiment.