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20 papers · 1 filter
Rates for Inclusive Deep-Inelastic Electroproduction of Charm Quarks at HERA
S. Riemersma, J. Smith, W. L. van Neerven
The coefficient functions for heavy-flavour production in deeply inelastic electron-hadron scattering have been calculated previously. Analytic expressions are impossible to publis…
Quark Model, Large Order Behavior and Nonperturbative Wave Functions in QCD
Ariel R. Zhitnitsky
We discuss a few, apparently different (but actually, tightly related) problems: 1. The relation between QCD and valence quark model, 2. The evaluation of the nonlocal condensate $…
A Precise Determination of from Lattice QCD
C. T. H. Davies, K. Hornbostel, G. P. Lepage +3
We present a new determination of the QCD strong coupling constant based on precise lattice calculations of the spectrum. The largest systematic uncertainty in previous such de…
Leptoproduction of Heavy Quarks in the Fixed and Variable Flavor Schemes
Fredrick I. Olness, Stephan T. Riemersma
We compare the results of the fixed-flavor scheme calculation of Laenen, Riemersma, Smith and van Neerven with the variable-flavor scheme calculation of Aivazis, Collins, Olness an…
Precision Upsilon Spectroscopy from Nonrelativistic Lattice QCD
C. T. H. Davies, K. Hornbostel, A. Langnau +4
The spectrum of the Upsilon system is investigated using the Nonrelativistic Lattice QCD approach to heavy quarks and ignoring light quark vacuum polarization. We find good agreeme…
Measurement of the B -> D^* l nu Branching Fractions and |Vcb|
The CLEO Collaboration
We study the exclusive semileptonic B meson decays B- -> D*0 l- nu and B0 -> D*+ l- nu using data collected with the CLEO II detector at CESR. We present measurements of the branch…