Generalized Parton Distributions from Deeply Virtual Compton Scattering at HERMES

Details Generalized Parton Distributions from Deeply Virtual Compton Scattering at HERMES Generalized Parton Distributions from Deeply Virtual Compton Scattering at HERMES

2009-05-08

arxiv.org/abs/0905.1220v2

Eur.Phys.J.A42:71-78,2009

Physics

High Energy Physics

High Energy Physics - Phenomenology

8 pages, 5 figures The difference between v2 and v1 is only ref.11 which contained a typo and which has been corrected

Scientific paper

10.1140/epja/i2009-10840-4

The HERMES collaboration has recently published a set of (correlated) beam charge, beam spin and target spin relative asymmetries for the Deeply Virtual Compton Scattering process. This reaction allows in principle to access the Generalized Parton Distributions of the nucleon. We have fitted, in the QCD leading-order and leading-twist handbag approximation, but in a model independent way, this set of data and we report our results for the extracted Compton Form Factors. In particular, we are able to extract constrains on the $H$ GPD.

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