# Deeply virtual compton scattering off the neutron

Abstract : The present experiment exploits the interference between the Deeply Virtual Compton Scattering (DVCS) and the Bethe-Heitler processes to extract the imaginary part of DVCS amplitudes on the neutron and on the deuteron from the helicity-dependent D$({\vec e},e'\gamma)X$ cross section measured at $Q^2$=1.9 GeV$^2$ and $x_B$=0.36. We extract a linear combination of generalized parton distributions (GPDs) particularly sensitive to $E_q$, the least constrained GPD. A model dependent constraint on the contribution of the up and down quarks to the nucleon spin is deduced.
Document type :
Journal articles

http://hal.in2p3.fr/in2p3-00169804
Contributor : Dominique Girod <>
Submitted on : Wednesday, September 5, 2007 - 10:17:16 AM
Last modification on : Wednesday, September 16, 2020 - 4:08:18 PM

### Citation

M. Mazouz, A. Camsonne, C. Munoz Camacho, C. Ferdi, G. Gavalian, et al.. Deeply virtual compton scattering off the neutron. Physical Review Letters, American Physical Society, 2007, 99, pp.242501. ⟨10.1103/PhysRevLett.99.242501⟩. ⟨in2p3-00169804⟩

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