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Full-Text Articles in Physics
Multi-Frequency Blazar Micro-Variability As A Tool To Investigate Relativistic Jets, James R. Webb
Multi-Frequency Blazar Micro-Variability As A Tool To Investigate Relativistic Jets, James R. Webb
Department of Physics
For the past 12 years we have been studying optical micro-variability of a sample of 15 Blazars. We summarize the results of this study and draw some basic conclusions about the characteristics of micro-variability. The intermittency, the stochastic nature, and the similar profile shapes seen in micro-variations at different times and in different objects have led us to a possible model to explain the observed micro-variations. The model is based on a strong shock propagating down a relativistic jet and encountering turbulence which causes density or magnetic field enhancements. We use the theory of Kirk, Reiger, and Mastichiadis (1998) to …
Electron–Deuteron Dis With Spectator Tagging At Eic: Development Of Theoretical Framework, W. Cosyn, V. Guzey, Misak M. Sargsian, M. Strikman, C. Weiss
Electron–Deuteron Dis With Spectator Tagging At Eic: Development Of Theoretical Framework, W. Cosyn, V. Guzey, Misak M. Sargsian, M. Strikman, C. Weiss
Department of Physics
An Electron–Ion Collider (EIC) would enable next-generation measurements of deep-inelastic scattering (DIS) on the deuteron with detection of a forward-moving nucleon (p, n) and measurement of its recoil momentum (“spectator tagging”). Such experiments offer full control of the nuclear configuration during the high-energy process and can be used for precision studies of the neutron’s partonic structure and its spin dependence, nuclear modifications of partonic structure, and nuclear shadowing at small x. We review the theoretical description of spectator tagging at EIC energies (light–front nuclear structure, on-shell extrapolation in the recoil nucleon momentum, final-state interactions, diffractive effects …
Tagged Spectator Deep-Inelastic Scattering Off The Deuteron As A Tool To Study Neutron Structure, Wim Cosyn, Misak M. Sargsian
Tagged Spectator Deep-Inelastic Scattering Off The Deuteron As A Tool To Study Neutron Structure, Wim Cosyn, Misak M. Sargsian
Department of Physics
We give an overview of a model to describe deep-inelastic scattering (DIS) off the deuteron with a spectator proton, based on the virtual nucleon approximation (VNA). The model accounts for the final-state interactions (FSI) of the DIS debris with the spectator proton. Values of the rescattering cross section are obtained by fits to high-momentum spectator data. By using the so-called “pole extrapolation” method, free neutron structure functions can be obtained by extrapolating low-momentum spectator proton data to the on-shell neutron pole. We apply this method to the BONuS data set and find a surprising Bjorken x dependence, indicating a possible …
Electroexcitation Of The Δ+(1232) At Low Momentum Transfer, Werner U. Boeglin
Electroexcitation Of The Δ+(1232) At Low Momentum Transfer, Werner U. Boeglin
Department of Physics
No abstract provided.
First Measurement Of The Helicity Asymmetry Ein Ηphotoproduction On The Proton, R.A. Badui, Lei Guo, W. Phelps, D. Schott
First Measurement Of The Helicity Asymmetry Ein Ηphotoproduction On The Proton, R.A. Badui, Lei Guo, W. Phelps, D. Schott
Department of Physics
No abstract provided.