Investigation of beauty production and parton shower effects at LHC

Abstract

We present hadron-level predictions from the Monte Carlo generator Cascade and parton level calculations of open b quark, b-flavored hadron and inclusive b-jet production in the framework of the kt-factorization QCD approach for the LHC energies. The unintegrated gluon densities in a proton are determined using the CCFM evolution equation and the Kimber-Martin-Ryskin (KMR) prescription. Our predictions are compared with the first data taken by the CMS and LHCb collaborations at 7 TeV. We study the theoretical uncertainties of our calculations and investigate the effects coming from parton showers in initial and final states. The special role of initial gluon transverse momenta in description of the data is pointed out.

19 pages, 11 figures. arXiv admin note: substantial text overlap with arXiv:1105.5071

References in corpus (12)

• Parton distributions for the LHC
• The CCFM Monte Carlo generator CASCADE 2.2.0
• Measurement of sigma(pp -> b anti-b X) at \sqrt(s)=7 TeV in the forward region
• Measurement of the B+ Production Cross Section in pp Collisions at sqrt(s) = 7 TeV
• Measurement of B anti-B Angular Correlations based on Secondary Vertex Reconstruction at sqrt(s)=7 TeV
• Measurement of the B0 production cross section in pp Collisions at sqrt(s) = 7 TeV
• Angular correlations in multi-jet final states from kt-dependent parton showers
• Inclusive b-hadron production cross section with muons in pp collisions at sqrt(s) = 7 TeV
• Heavy Flavour Production at Tevatron and Parton Shower Effects
• Un-integrated PDFs in CCFM
• First measurements of beauty quark production at {\surd}s = 7 TeV with the CMS experiment
• Beauty quark and quarkonium production at LHC: kt-factorization and CASCADE versus data

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