Extraction of Compton Form Factors in Scalar QED

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• 作者：Bernard L. G. Bakker ; Chueng-Ryong Ji
• 刊名：Few-Body Systems
• 出版年：2015
• 出版时间：September 2015
• 年：2015
• 卷：56
• 期：6-9
• 页码：275-280
• 全文大小：484 KB
• 参考文献：1.Belitsky A.V., Müller D.: Refined analysis of photon leptoproduction off a spinless target. Phys. Rev. D 79, 014017 (2009)CrossRef ADS
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  3.Perrottet M.: Invariant amplitudes for Compton scattering of off-shell photons on polarized nucleons. Lett. Nuovo Cim. 7, 915 (1973)CrossRef
  4.Tarrach R.: Invariant amplitudes for virtual Compton scattering off polarized nucleons free from kinematic singularities, zeros and constraints. Nuovo Cim. 28 A, 409 (1975)CrossRef ADS
  5.Bakker B.L.G., Ji C.-R.: A study of Compton form factors in scalar QED. Few-Body Syst. 55, 395 (2014)CrossRef ADS
  6.Ji C.-R., Bakker B.L.G.: Conceptual issues concerning generalized parton distributions. Int. J. Mod. Phys. E 22, 1330002 (2013)CrossRef ADS
  7.Roche, J., et?al.: Measurements of the electron-helicity depdendent cross sections of deeply virtual compton scattering with CEBAF at 12?GeV. arXiv:?nucl-ex/-609015 (2006)
  
• 作者单位：Bernard L. G. Bakker (1)
  Chueng-Ryong Ji (2)
  
  1. Department of Physics and Astrophysics, Vrije Universiteit, Amsterdam, The Netherlands
  2. Department of Physics, North Carolina State University, Raleigh, NC, 27695-8202, USA
  
• 刊物类别：Physics and Astronomy
• 刊物主题：Physics
  Elementary Particles and Nuclei
  Nuclear Physics, Heavy Ions and Hadrons
  Atoms, Molecules, Clusters and Plasmas
  
• 出版者：Springer Wien
• ISSN：1432-5411

文摘

When deeply virtual Compton scattering is used as a tool to study the structure of hadrons in an exclusive process, one way to analyze this process is to express the amplitudes in terms of generalized parton distributions (GPDs). The definition of the latter quantities requires a special kinematics, that cannot always be realized in experiments. Therefore, one may use the expression of the scattering amplitudes in terms of the invariant Compton form factors (CFFs) as a stepping stone to finding the GPDs. In a simple case we illustrate the influences of making approximations in the extraction of CFFs on the values obtained. Presented by Ben Bakker at LIGHTCONE 2014, 20-4 May, 2014, Raleigh NC, USA.