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Backward electroproduction of $\pi^0$ mesons on protons in the region of nucleon resonances at four momentum transfer squared $Q^2 = 1.0 GeV^2$

G. Laveissiere 1 N. Degrande S. Jaminion 1 C. Jutier 1 L. Todor R. Di Salvo 1 L. van Hoorebeke L.C. Alexa Stony B.D. Anderson K.A. Aniol K. Arundell G. Audit L. Auerbach F.T. Baker Maud 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 J.R. Calarco L.S. Cardman C. Cavata 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 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 B. Frois 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 J.O. Hansen R. Holmes M. Holtrop C. Howell G.M. Huber C.E. Hyde-Wright S. Incerti M. Iodice J. Jardillier M.K. Jones W. Kahl S. Kamalov S. Kato A.T. Katramatou J.J. Kelly S. Kerhoas A. Ketikyan 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 D. Marchand D.J. Margaziotis P. Markowitz J. Marroncle J. Martino 5 C.J. Martoff K. Mccormick J. Mcintyre S. Mehrabyan F. Merchez 4 Z.E. Meziani R. Michaels G.W. Miller J.Y. Mougey 4 S.K. Nanda D. Neyret E.A.J.M. Offermann Z. Papandreou C.F. Perdrisat R. Perrino G.G. Petratos S. Platchkov R. Pomatsalyuk D.L. Prout V.A. Punjabi T. Pussieux G. Quéméner 1 R.D. Ransome O. Ravel 1 J.S. Real 4 F. Renard 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 H. Tsubota H. Ueno P.E. Ulmer G.M. Urciuoli R. van de Vyver R.L.J. van Der Meer P. Vernin B. Vlahovic H. Voskanyan E. Voutier 4 J.W. Watson L.B. Weinstein K. Wijesooriya R. P. Wilson B.B. Wojtsekhowski D.G. Zainea W.M. Zhang J. Zhao Z.L. Zhou 
Abstract : Exclusive electroproduction of pi0 mesons on protons in the backward hemisphere has been studied at Q2=1.0 GeV2 by detecting protons in the forward direction in coincidence with scattered electrons from the 4 GeV electron beam in Jefferson Lab's Hall A. The data span the range of the total (gamma*p) center-of-mass energy W from the pion production threshold to W=2.0 GeV. The differential cross sections sigmaT+epsilonsigmaL, sigmaTL, and sigmaTT were separated from the azimuthal distribution and are presented together with the MAID and SAID parametrizations.
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Submitted on : Wednesday, May 5, 2004 - 9:40:43 AM
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G. Laveissiere, N. Degrande, S. Jaminion, C. Jutier, L. Todor, et al.. Backward electroproduction of $\pi^0$ mesons on protons in the region of nucleon resonances at four momentum transfer squared $Q^2 = 1.0 GeV^2$. Physical Review C, American Physical Society, 2004, 69, pp.045203. ⟨10.1103/PhysRevC.69.045203⟩. ⟨in2p3-00021593⟩



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