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45 papers · 2 filters
Supersymmetric Unification
Savas Dimopoulos
The measured value of the weak mixing angle is, at present, the only precise experimental indication for physics beyond the Standard Model. It points in the direction of Unified Th…
The Impact of QCD and Light-Cone Quantum Mechanics on Nuclear Physics
Stanley J. Brodsky, Felix Schlumpf
We discuss a number of novel applications of Quantum Chromodynamics to nuclear structure and dynamics, such as the reduced amplitude formalism for exclusive nuclear amplitudes. We…
Reevaluation of the Hadronic Contribution to (revised)
Morris L. Swartz
We reevaluate the hadronic part of the electromagnetic vacuum expectation value using the standard dispersion integral approach that utilizes the hadronic cross section measured in…
Pure Leptonic Radiative Decays and the Annihilation Graph
D. Atwood, G. Eilam, A. Soni
Pure leptonic radiative decays of heavy-light mesons are calculated using a very simple non-relativistic model. Dominant contribution originates from photon emission from light ini…
The Evolution of the Pion Distribution Amplitude in Next-to-Leading Order
Dieter Müller
The evolution of the pion distribution amplitude in next-to-leading order is studied for a fixed and a running coupling constant. In both cases, the evolution provides a logarithmi…
Semi-Exclusive Pion Production in Deep-Inelastic Scattering
A. Brandenburg, V. V. Khoze, D. Müller
We calculate azimuthal asymmetries and the Callan-Gross -ratio for semi-exclusive pion production in deep inelastic scattering taking into account higher twist effects. Our resu…