http://cds.cern.ch/record/954903/files/0609101.pdf

Heavy-Flavour Hadro-Production from Fixed-Target to Collider Energies

We review the hadro-production data presently available on open charm and beauty absolute production cross-sections, collected by experiments at CERN, DESY and Fermilab. The published charm production cross-section values are updated, in particular for the "time evolution" of the branching ratios. These measurements are compared to LO pQCD calculations, as a function of the collision energy, using recent parametrisations of the parton distribution functions. We then estimate, including nuclear effects of the parton densities, the charm and beauty production cross-sections relevant for measurements at SPS and RHIC energies, in proton-proton, proton-nucleus and nucleus-nucleus collisions. The calculations are also compared with measurements of single D and B kinematical distributions, and DDbar pair correlations. We finish with two brief comments, concerning the importance of beauty production as a feed-down source of J/psi production, and open charm measurements performed using leptonic decays.

Heavy Flavour Hadro-Production from Fixed-Target to Collider Energies

We give here a detailed description of experiment WA75, which was performed at CERN to search for beauty particles. Events containing at least one muon with a high momentum transverse to the beam direction were selected; then the primary interactions and decay vertices, located in stacks of nuclear research emulsions, were examined and analysed. The various parts of the apparatus are described and the off-line analysis and search in emulsion are discussed. An estimate is made of the sensitivity of the experiment to beauty- and charmed-particle production.

/pdf/a-hybrid-experiment-to-search-for-beauty-particles-1492q1tcyr.pdf

A Hybrid Experiment to Search for Beauty Particles

Fully differential heavy quark contributions to the photon structure functions in deep inelastic scattering are computed in next-to-leading order QCD, including both the direct and resolved contributions. A variety of distributions are presented and discussed. Several of the distributions show marked differences between the resolved and direct cases due primarily to the presence of the gluon distribution in the former and lack thereof in the latter. {copyright} {ital 1996 The American Physical Society.}

Fully differential heavy quark contributions to the photon structure functions F2 gamma (x,Q2) and FL gamma (x,Q2) in next-to-leading order QCD.

Some experimental results on heavy quark hadroproduction are compared with theoretical calculations based on Next-to-Leading Order (NLO) Perturbative Quantum ChromoDynamics (PQCD). This comparison is limited to the case of beams colliding on stationary nuclear targets and to those variables which should better test the theory.

Experimental study of heavy quark hadroproduction

Some properties of charmed particles produced in π−-nucleus interactions

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Some properties of charmed particles produced in π−-nucleus interactions