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Showing 1 to 6 of 6 for “"infinite momentum"”.
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Quantum electrodynamic model for production amplitudes at infinite momentum
… electron-electron collisions is calculated in a infinite momentum field theory model. More precisely, the model considers only events where"" the center of momentum energy is, much larger, than typical subenergies between pairs which are adjacent in longitudinal momentum. The subenergies are …
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Ultraviolet laser calibration of drift chambers
… particularly because it behaves as a particle of infinite momentum whose trajectory is straight in a magnetic field. To this end, we present measurements of the ionization profile of the laser for various gasses and model this ionization in terms of photon flux.
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Explorations of the quark substructure of the nucleon in lattice QCD
… by generalized form factors, which in the infinite momentum frame can be unambiguously interpreted in terms of Fourier transforms of the transverse spatial distributions of quarks in a nucleon. By calculating the local operators at many different values of nucleon momentum, we extract a …
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Three-Point Correlator and Pion Form Factor in Quantum Chromodynamics: Methods of Calculation for Two-Loop Spectral Density
… which are related to particular regions of momentum integrations inside Feynman integrals. The trace factors accompanying all six two-loop diagrams are calculated and classified. To regularize particular loop integrals, the dimensional regularization technique has been used. The calculation …
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UNRAVELING THE NUCLEON 3D STRUCTURE FROM EXPERIMENT, LATTICE, AND GLOBAL ANALYSIS
… and quark and gluon canonical orbital angular momentum densities associated with transverse polarization. This is the counterpart of the sum rule for the longitudinal spin of the proton derived by Jaffe and Manohar previously. We discuss in detail an important technicality related to the …
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Time-dependence of ionization and excitation by intense, short electric pulses
… pulse is reduced, regardless of its shape, to a momentum kick with magnitude equal to the half-cycle pulse area. The modified FMA, developed in this thesis, in turn enables analysis beyond a half-cycle pulse by inclusion of the propagation in the Coulomb field of the nucleus between the kicks. …