DVCS-Dissociation of the Deuteron and the EMC Effect

Details DVCS-Dissociation of the Deuteron and the EMC Effect DVCS-Dissociation of the Deuteron and the EMC Effect

2004-12-07

arxiv.org/abs/nucl-th/0412025v1

Nucl.Phys. A761 (2005) 259-268

Physics

Nuclear Physics

Nuclear Theory

10 pages LaTeX, 2 eps figures

Scientific paper

10.1016/j.nuclphysa.2005.07.018

The break-up of the deuteron during deeply-virtual Compton scattering, gamma* d --> gamma(*) n p, is explored. In the effective field theory describing nucleon dynamics at momenta below the pion mass, the EMC effect results from four-nucleon interactions with the twist-2 operators, appropriate for describing forward, and near-forward, matrix elements in the two-nucleon system. We point out that the break-up of the deuteron to low-energy final states during deeply-virtual Compton scattering is a process with which to explore strong-interaction physics closely related to that responsible for the EMC effect. The single-nucleon contribution to the break-up depends on the moments of the spin-dependent structure functions and contributions from local four-nucleon operators. Experimental deviations from the single-nucleon prediction would provide a probe of strong interactions complimentary to the EMC effect.

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