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Showing 1 to 13 of 13 for “"pion photoproduction"”.
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Simulated pion photoproduction experiments
Introduction: In this paper, I will be assessing the capabilities of the Neutral Meson Spectrometer (NMS) detector in a planned experiment at the High Intensity Gamma Source at Duke University. I will review the relevant theory and set out the importance of this experiment. I will describe the …
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An analysis of pion photoproduction
A partial-wave analysis of pion photoproduction data up to a photon lab energy of 1.8 GeV has been performed. Both energy-dependent and energy-independent solutions have been obtained. The energy-dependent parametrization incorporates the recently determined elastic pion nucleon scattering …
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Vector meson dominance and pion photoproduction
… large number of sets of invariant amplitudes for pion photoproduction. The resulting cross section always has a kinematic singularity; whether or not it is in the physical region depends on which set is used. The· standard proportionality between polarized photon and vector meson· cross sections …
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Pion photoproduction in the (3,3) resonance region
Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Physics, 1980.
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Study of the Two Pion Photoproduction On Deuterium
… resonance states may be evaluated through meson photoproduction. To gain more detailed insight into this interaction, we look to probe the baryon structure of the nu- cleon and the photo-excited resonance decays through photon scattering off a deuteron producing two pions in the final state. This …
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Charged Pion Photoproduction Cross Section and Beam Asymmetry Measurement on HD
The charged pion production reactions d(gamma,pi<sup>+</sup>n), d(gamma,pi<sup>-</sup>p), HD(gamma,pi<sup>+</sup>n)X were studied using linearly polarized gamma-rays with energies in the range from 260 MeV to 370 MeV at the Laser Electron Gamma Source (LEGS). A solid HD target was used in this …
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Numerical study of Regge cuts due to absorption in neutral pion photoproduction
… of some absorptive Regge models of neutral pion photoproduction. We start be reviewing the formalism in a consistent notation. The formalism contains derivations of the two expressions commonly used to calculate absorbed scattering amplitudes and their relation to Regge cut parametrizations. …
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Simulation of a pion photodetection experiment
… in measuring physical quantities from each pion photoproduction event detected. We then simulate the extraction of raw data from the experiment using both the Crystal Box and the NMS detectors, and present our results as to how well we believe each detector will perform at measuring the …
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Radiative Corrections to Low Energy Theorems
… first noted by Soloviev); of the order ωlnω for pion-photo-production. Accordingly, in the presence of radiative corrections, there are no longer any low-energy theorems for the O(ω⁰) bremsstrahlung and O(ω) pion-photoproduction amplitudes. The e⁴ Compton amplitude O(ω²lnω) is computed and shown …
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Precision measurement of neutron spin asymmetry An1 at large xBj using CEBAF at 5.7 GeV
… less statistical precision. The asymmetries of pion photoproduction A[pi]⁻ were obtained as a byproduct.
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Use of simple-harmonic forces in the non-relativistic quark model
… compute the N~partial decay widths, assuming the pion emission takes place via a one-quark de-excitat~on, . The agreement with experiment is sufficiently good to warrant an investigation of the N* decay widths of all resonances predicted to havem' up to about 2 GeV, and such an investigation is …
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Photoproduction of π0 on Hydrogen With CLAS From 1.1 GeV - 5.45 GeV Using e+e –γ Decay
<p>Photoproduction of the π<sup>0</sup> meson was studied using the CLAS detector at the Thomas Jefferson National Accelerator Facility using tagged incident photon energies spanning the range <em>E</em><sub>γ</sub> = 1.1 GeV - 5.45 GeV. The measurement is performed on a liquid hydrogen target in …