Exclusive neutral pion electroproduction in the deeply virtual regime

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

Author(s)

Gayou, Olivier; Monaghan, Peter; Qiang, Yi

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Abstract

We present measurements of the ep → epπ0 [ep pi superscript 0] cross section extracted at two values of four-momentum transfer Q2 = 1.9 GeV2 [Q superscript 2 = 1.9 GeV superscript 2] and Q2 = 2.3 GeV2 [Q superscript 2 = 2.3 GeV superscript 2] at Jefferson Lab Hall A. The kinematic range allows one to study the evolution of the extracted cross section as a function of Q2 [Q superscript 2] and W. Results are confronted with Regge-inspired calculations and GPD predictions. An intepretation of our data within the framework of semi-inclusive deep inelastic scattering is also discussed.

Date issued

2011-02

URI

http://hdl.handle.net/1721.1/64957

Department

Massachusetts Institute of Technology. Department of Physics; Massachusetts Institute of Technology. Laboratory for Nuclear Science

Journal

Physical review C

Publisher

American Physical Society

Citation

Version: Final published version

ISSN

0556-2813

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