Deeply virtual compton scattering off the neutron

M. Mazouz, A. Camsonne, C. Muñoz Camacho, C. Ferdi, G. Gavalian, E. Kuchina, M. Amarian, K. A. Aniol, M. Beaumel, H. Benaoum, P. Bertin, M. Brossard, J. P. Chen, E. Chudakov, B. Craver, F. Cusanno, C. W. De Jager, A. Deur, R. Feuerbach, J. M. FieschiS. Frullani, M. Garçon, F. Garibaldi, O. Gayou, R. Gilman, J. Gomez, P. Gueye, P. A.M. Guichon, B. Guillon, O. Hansen, D. Hayes, D. Higinbotham, T. Holmstrom, C. E. Hyde, H. Ibrahim, R. Igarashi, X. Jiang, H. S. Jo, L. J. Kaufman, A. Kelleher, A. Kolarkar, G. Kumbartzki, G. Laveissiere, J. J. Lerose, R. Lindgren, N. Liyanage, H. J. Lu, D. J. Margaziotis, Z. E. Meziani, K. McCormick, R. Michaels, B. Michel, B. Moffit, P. Monaghan, S. Nanda, V. Nelyubin, M. Potokar, Y. Qiang, R. D. Ransome, J. S. Réal, B. Reitz, Y. Roblin, J. Roche, F. Sabatié, A. Saha, S. Sirca, K. Slifer, P. Solvignon, R. Subedi, V. Sulkosky, P. E. Ulmer, E. Voutier, K. Wang, L. B. Weinstein, B. Wojtsekhowski, X. Zheng, L. Zhu

Research output: Contribution to journalArticlepeer-review

160 Scopus citations

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(e→,e′γ)X cross section measured at Q2=1.9GeV2 and xB=0.36. We extract a linear combination of generalized parton distributions (GPDs) particularly sensitive to Eq, the least constrained GPD. A model dependent constraint on the contribution of the up and down quarks to the nucleon spin is deduced.

Original languageEnglish (US)
Article number242501
JournalPhysical review letters
Volume99
Issue number24
DOIs
StatePublished - Dec 10 2007

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy

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