Skip to Main content Skip to Navigation
Journal articles

Virtual Compton Scattering and Neutral Pion Electroproduction in the Resonance Region up to the Deep Inelastic Region at Backward Angles

G. Laveissiere 1 N. Degrande S. Jaminion 1 C. Jutier 1 L. Todor R. Di Salvo 1 L. van Hoorebeke L.C. Alexa B.D. Anderson K.A. Aniol K. Arundell G. Audit 2 L. Auerbach F.T. Baker M. Baylac 2 J. Berthot 1 P.Y. Bertin 1 W. Bertozzi L. Bimbot 3 W.U. Boeglin E.J. Brash Vincent Breton 1 H. Breuer E. Burtin 2 J.R. Calarco L.S. Cardman C. Cavata 2 C.-C. Chang J.-P. Chen E. Chudakov E. Cisbani D.S. Dale C.W. de Jager R. de Leo A. Deur 1 N. d'Hose 2 G.E. Dodge J.J. Domingo L. Elouadrhiri M.B. Epstein L.A. Ewell J.M. Finn K.G. Fissum H. Fonvieille 1 G. Fournier 2 B. Frois 2 S. Frullani C. Furget 4 H. Gao J. Gao F. Garibaldi A. Gasparian S. Gilad R. Gilman A. Glamazdin C. Glashausser J. Gomez V. Gorbenko P. Grenier 1 P.A.M. Guichon 2 J.O. Hansen R. Holmes M. Holtrop C. Howell G.M. Huber C. E. Hyde 1 S. Incerti M. Iodice J. Jardillier 2 M.K. Jones W. Kahl S. Kamalov S. Kato A.T. Katramatou J.J. Kelly S. Kerhoas 2 A. Ketikyan 2 M. Khayat K. Kino S. Kox 4 L.H. Kramer K.S. Kumar G. Kumbartzki M. Kuss A. Leone J.J. Lerose M. Liang R.A. Lindgren N. Liyanage G.J. Lolos R.W. Lourie R. Madey K. Maeda S. Malov D.M. Manley C. Marchand 2 D. Marchand 2 D.J. Margaziotis P. Markowitz J. Marroncle 2 J. Martino 2 K. Mccormick J. Mcintyre S. Mehrabyan F. Merchez 4 Z.E. Meziani R. Michaels G.W. Miller J.Y. Mougey S.K. Nanda D. Neyret 2 E.A.J.M. Offermann Z. Papandreou C.F. Perdrisat R. Perrino G.G. Petratos S. Platchkov 2 R. Pomatsalyuk D.L. Prout V.A. Punjabi T. Pussieux 2 G. Quéméner 1 R.D. Ransome O. Ravel 1 J.S. Real 4 F. Renard 2 Y. Roblin 1 D. Rowntree G. Rutledge P.M. Rutt A. Saha T. Saito A.J. Sarty A. Serdarevic T. Smith George Smirnov 1 K. Soldi P. Sorokin P.A. Souder R. Suleiman J.A. Templon T. Terasawa L. Tiator R. Tieulent 4 E. Tomasi-Gustaffson 2, 3 H. Tsubota H. Ueno P.E. Ulmer G.M. Urciuoli R. van de Vyver R.L.J. van der Meer P. Vernin 2 B. Vlahovic H. Voskanyan E. Voutier 4 W. Watson L.B. Weinstein K. Wijesooriya R. Wilson B.B. Wojtsekhowski D.G. Zainea W.-M. Zhang J. Zhao Z.-L. Zhou
Abstract : We have made the first measurements of the virtual Compton scattering (VCS) process via the H$(e,e'p)\gamma$ exclusive reaction in the nucleon resonance region, at backward angles. Results are presented for the $W$-dependence at fixed $Q^2=1$ GeV$^2$, and for the $Q^2$-dependence at fixed $W$ near 1.5 GeV. The VCS data show resonant structures in the first and second resonance regions. The observed $Q^2$-dependence is smooth. The measured ratio of H$(e,e'p)\gamma$ to H$(e,e'p)\pi^0$ cross sections emphasizes the different sensitivity of these two reactions to the various nucleon resonances. Finally, when compared to Real Compton Scattering (RCS) at high energy and large angles, our VCS data at the highest $W$ (1.8-1.9 GeV) show a striking $Q^2$- independence, which may suggest a transition to a perturbative scattering mechanism at the quark level.
Complete list of metadatas

http://hal.in2p3.fr/in2p3-00343783
Contributor : Jeanine Pellet <>
Submitted on : Tuesday, December 2, 2008 - 5:47:42 PM
Last modification on : Thursday, November 19, 2020 - 12:58:48 PM

Links full text

Identifiers

Citation

G. Laveissiere, N. Degrande, S. Jaminion, C. Jutier, L. Todor, et al.. Virtual Compton Scattering and Neutral Pion Electroproduction in the Resonance Region up to the Deep Inelastic Region at Backward Angles. Physical Review C, American Physical Society, 2009, 79, pp.015201. ⟨10.1103/PhysRevC.79.015201⟩. ⟨in2p3-00343783⟩

Share

Metrics

Record views

534