Physics
Scientific paper
Mar 2012
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012aps..aprw10010f&link_type=abstract
American Physical Society, APS April Meeting 2012, March 31-Apr 3, 2012, abstract #W10.010
Physics
Scientific paper
The feasibility for a measurement of the exclusive production of a real photon, a process although known as Deeply Virtual Compton Scattering (DVCS), using the future eRHIC machine at BNL has been explored. eRHIC is a machine designed to collide an electron beam with energies ranging from 5 GeV up to 30 GeV with the RHIC hadron beams (protons (100 -250 GeV) and nuclei (<= 100 GeV)) at varying center-of-mass energies. DVCS is universally believed to be a golden measurement toward the determination of the Generalized Parton Distribution (GPDs) functions. The high luminosity of the machine, expected in the order of 10^34cm-2s-1 at the highest center-of-mass energies, together with the large rapidity acceptance of a newly designed dedicated detector, will open the opportunity for very high precision measurements of DVCS, providing an important tool toward a 2+1 dimensional picture of the internal structure of the proton. The huge impact such measurements would have on the determination of GPDs will be discussed.
Fazio Salvatore
Mueller Dieter
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