Measurements Of Elastic Electron Scattering From The Proton At High Momentum
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Measurements Of Elastic Electron Scattering From The Proton At High Momentum
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Author : Alan F. Sill
language : en
Publisher:
Release Date : 1987
Measurements Of Elastic Electron Scattering From The Proton At High Momentum written by Alan F. Sill and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1987 with Elastic cross sections categories.
Ineleastic Electron Proton Scattering At High Momentum Transfer
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Author : Martin Breidenbach
language : en
Publisher:
Release Date : 1970
Ineleastic Electron Proton Scattering At High Momentum Transfer written by Martin Breidenbach and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1970 with Electrons categories.
Measurements Of Compton Scattering On The Proton At 2 6 Gev
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Author : Areg Danagoulian
language : en
Publisher:
Release Date : 2006
Measurements Of Compton Scattering On The Proton At 2 6 Gev written by Areg Danagoulian and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006 with categories.
Inelastic Electron Scattering From Hydrogen And Complex Nuclei At Large Momentum Transfer
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Author : David Evans Andrews
language : en
Publisher:
Release Date : 1972
Inelastic Electron Scattering From Hydrogen And Complex Nuclei At Large Momentum Transfer written by David Evans Andrews and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1972 with Electrons categories.
Measurements Of Compton Scattering On The Proton At 2 6 Gev
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Author :
language : en
Publisher:
Release Date : 2006
Measurements Of Compton Scattering On The Proton At 2 6 Gev written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006 with categories.
Similar to elastic electron scattering, Compton Scattering on the proton at high momentum transfers(and high p⊥) can be an effective method to study its short-distance structure. An experiment has been carried out to measure the cross sections for Real Compton Scattering (RCS) on the proton for 2.3-5.7 GeV electron beam energies and a wide distribution of large scattering angles. The 25 kinematic settings sampled a domain of s = 5-11(GeV/c)2,-t = -7(GeV/c)2 and -u = 0.5-6.5(GeV/c)2. In addition, a measurement of longitudinal and transverse polarization transfer asymmetries was made at a 3.48 GeV beam energy and a scattering angle of ?cm = 120°. These measurements were performed to test the existing theoretical mechanisms for this process as well as to determine RCS form factors. At the heart of the scientific motivation is the desire to understand the manner in which a nucleon interacts with external excitations at the above listed energies, by comparing and contrasting the two existing models – Leading Twist Mechanism and Soft Overlap ?Handbag? Mechanism – and identify the dominant mechanism. Furthermore, the Handbag Mechanism allows one to calculate reaction observables in the framework of Generalized Parton Distributions (GPD), which have the function of bridging the wide gap between the exclusive(form factors) and inclusive(parton distribution functions) description of the proton. The experiment was conducted in Hall A of Thomas Jefferson National Accelerator Facility(Jefferson Lab). It used a polarized and unpolarized electron beam, a 6% copper radiator with the thickness of 6.1% radiation lengths (to produce a bremsstrahlung photon beam), the Hall A liquid hydrogen target, a high resolution spectrometer with a focal plane polarimeter, and a photon hodoscope calorimeter. Results of the differential cross sections are presented, and discussed in the general context of the scientific motivation.
Electron Nucleus Scattering Proceedings Of The Workshop
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Author : Adelchi Fabrocini
language : en
Publisher: World Scientific
Release Date : 1994-03-30
Electron Nucleus Scattering Proceedings Of The Workshop written by Adelchi Fabrocini and has been published by World Scientific this book supported file pdf, txt, epub, kindle and other format this book has been release on 1994-03-30 with categories.
The workshop aimed to gather the electron scattering community to assess the present status of the experimental and theoretical research program at the electron scattering facilities that will be available in the near future. The topics discussed include nucleon form factors and deep inelastic structure functions, electro-production of nucleon resonances, final state interactions and nucleon-nucleon correlations in nuclei, electron-nucleon scattering with polarized beams and targets and nuclear transparency.
The Elastic Scattering Of High Energy Electrons From Protons At 180 Degrees
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Author : Peter Andreas Munch Gram
language : en
Publisher:
Release Date : 1965
The Elastic Scattering Of High Energy Electrons From Protons At 180 Degrees written by Peter Andreas Munch Gram and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1965 with categories.
Measurements Of Elastic Electron Deuteron Scattering At High Momentum Transfers
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Author : J.E. Elias
language : en
Publisher:
Release Date : 1968
Measurements Of Elastic Electron Deuteron Scattering At High Momentum Transfers written by J.E. Elias and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1968 with categories.
Positron Proton Scattering
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Author : Andrew Arnold Browman
language : en
Publisher:
Release Date : 1964
Positron Proton Scattering written by Andrew Arnold Browman and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1964 with categories.
The importance of two-photon exchange in elastic electron-proton scattering was investigated by measuring the ratio of positron-proton to electron-proton scattering. Four momentum transfers as large as 0.756 (BeV/c) to the 2nd power (19.5 F to the -2nd power) were used. The data indicate that two-photon effects are 4.0 = 1.5% larger than those predicted by the radiative corrections at the highest momentum transfers attained in these experiments. The two-photon corrections predicted, using a static charge distribution, fit the data well at lower momentum transfers and forward angles but appear to be small at higher momentum transfers and backward angles. (Author).
A Measurement Of The Two Photon Exchange Effect In Elastic Electron Proton Scattering With Olympus
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Author : Rebecca Lynn Russell
language : en
Publisher:
Release Date : 2016
A Measurement Of The Two Photon Exchange Effect In Elastic Electron Proton Scattering With Olympus written by Rebecca Lynn Russell and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016 with categories.
Elastic electron-proton scattering has long been the tool of choice for the study of the proton form factors, GE(Q 2 ) and GM(Q2 ), which describe the electric and magnetic distributions of the proton as a function of momentum transfer. Recent experiments, measuring the form factors from polarization observables in polarized elastic electron-proton scattering, have found values of the ratio GE(Q2 )/GM(Q2) at high Q2 that contradict the results from unpolarized measurements. A proposed explanation for this discrepancy is the unaccounted two-photon exchange radiative correction, which could affect the unpolarized measurements. As this effect is currently not possible to calculate in a model-independent way, the OLYMPUS experiment was designed to make a direct measurement of it by measuring the elastic positron-proton to electron-proton scattering cross section ratio. The experiment was run in 2012 at DESY using the BLAST spectrometer and the DORIS positron and electron beams at 2 GeV incident on a gaseous hydrogen target. To analyze the data, a careful reconstruction of the scattering events, detailed simulation of the experimental setup, and full radiative corrections to the measured cross sections were performed. Preliminary results for the experiment show a statistically significant two-photon exchange effect, increasing over the measurement range of 0.6 GeV2