Harmonic oscillator force between heavy quarks

Harmonic Oscillator

Heavy Quarks in Elect’roproduction*

The idea of an effective light-particle field theory is used to analyze the effects of heavy quarks in electroproduction. The b-quark distribution is predicted at large QL and a systematic treatment of the changing number of quark flavors in a QCD analysis of F2 is presented. Submitted to Nuclear Physics B. * Work supported in part by the Department of Energy under contract DE-AC03-76SF00515. +...

Into Heavy Quarks *

We measure the hadronic branching ratios of the Z boson into heavy quarks: Rb = ΓZ0→bb/ΓZ0→hadrons and Rc = ΓZ0→cc/ΓZ0→hadrons using a multi-tag technique. The measurement was performed using about 400,000 hadronic Z events recorded in the SLD experiment at SLAC between 1996 and 1998. The small and stable SLC beam spot and the CCD-based vertex detector were used to reconstruct bottom and charm ...

Radiation of Heavy Quarks

The rate for the production of massive fermions radiated off a pair of massless fermions is calculated analytically. Combined with the analytic calculation of the corresponding virtual contribution one obtains the order α 2 correction to the cross section which is induced by the real and virtual radiation of a pair of massive fermions by massless fermions. Approximations valid for large and for...

Production of heavy quarks and heavy quarkonia

Uncertainties in the next-to-leading-order calculations of heavyquark (Q) production are investigated. Predictions for total cross sections, single-inclusive distributions of heavy quarks and heavy flavoured hadrons, as well as for QQ̄ correlations, are compared with charm and bottom data. The description of heavy-quarkonium production requires a separation of the short-distance scale of QQ̄ prod...