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Virtual compton scattering in the resonance region up to the deep inelastic region at backward angles and momentum transfer squared of $Q^2$ = 1.0 $GeV^2$ (2004) |
- Laveissiere, G.,
- Degrande, N.,
- Jaminion, S.,
- Jutier, C.,
- Todor, L.,
- Di Salvo, R.,
- Van Hoorebeke, L.,
- Alexa, L.C.,
- Anderson, B.D.,
- Aniol, K.A.,
- Arundell, K.,
- Audit, G.,
- Auerbach, L.,
- Baker, F.T.,
- Baylac, M.,
- Berthot, J.,
- Bertin, P.Y.,
- Bertozzi, W.,
- Bimbot, L.,
- Boeglin, W.U.,
- Brash, E.J.,
- Breton, V.,
- Breuer, H.,
- Burtin, E.,
- Calarco, J.R.,
- Cardman, L.S.,
- Cavata, C.,
- Chang, C.C.,
- Chen, J.P.,
- Chudakov, E.,
- Cisbani, E.,
- Dale, D.S.,
- De Jager, C.W.,
- De Leo, R.,
- Deur, A.,
- D'Hose, N.,
- Dodge, G.E.,
- Domingo, J.J.,
- Elouadrhiri, L.,
- Epstein, M.B.,
- Ewell, L.A.,
- Finn, J.M.,
- Fissum, K.G.,
- Fonvieille, H.,
- Fournier, G.,
- Frois, B.,
- Frullani, S.,
- Furget, C.,
- Gao, H.,
- Gao, J.,
- Garibaldi, F.,
- Gasparian, A.,
- Gilad, S.,
- Gilman, R.,
- Glamazdin, A.,
- Glashausser, C.,
- Gomez, J.,
- Gorbenko, V.,
- Grenier, P.,
- Guichon, P.A.M.,
- Hansen, J.O.,
- Holmes, R.,
- Holtrop, M.,
- Howell, C.,
- Huber, G.M.,
- Hyde-Wright, C.E.,
- Incerti, S.,
- Iodice, M.,
- Jardillier, J.,
- Jones, M.K.,
- Kahl, W.,
- Kamalov, S.,
- Kato, S.,
- Katramatou, A.T.,
- Kelly, J.J.,
- Kerhoas, S.,
- Ketikyan, A.,
- Khayat, M.,
- Kino, K.,
- Kox, S.,
- Kramer, L.H.,
- Kumar, K.S.,
- Kumbartzki, G.,
- Kuss, M.,
- Leone, A.,
- LeRose, J.J.,
- Liang, M.,
- Lindgren, R.A.,
- Liyanage, N.,
- Lolos, G.J.,
- Lourie, R.W.,
- Madey, R.,
- Maeda, K.,
- Malov, S.,
- Manley, D.M.,
- Marchand, C.,
- Marchand, D.,
- Margaziotis, D.J.,
- Markowitz, P.,
- Marroncle, J.,
- Martino, J.,
- Martoff, C.J.,
- McCormick, K.,
- McIntyre, J.,
- Mehrabyan, S.,
- Merchez, F.,
- Meziani, Z.E.,
- Michaels, R.,
- Miller, G.W.,
- Mougey, J.Y.,
- Nanda, S.K.,
- Neyret, D.,
- Offermann, E.A.J.M.,
- Papandreou, Z.,
- Perdrisat, C.F.,
- Perrino, R.,
- Petratos, G.G.,
- Platchkov, S.,
- Pomatsalyuk, R.,
- Prout, D.L.,
- Punjabi, V.A.,
- Pussieux, T.,
- Quemener, G.,
- Ransome, R.D.,
- Ravel, O.,
- Real, J.S.,
- Renard, F.,
- Roblin, Y.,
- Rowntree, D.,
- Rutledge, G.,
- Rutt, P.M.,
- Saha, A.,
- Saito, T.,
- Sarty, A.J.,
- Serdarevic, A.,
- Smith, T.,
- Smirnov, G.,
- Soldi, K.,
- Sorokin, P.,
- Souder, P.A.,
- Suleiman, R.,
- Templon, J.A.,
- Terasawa, T.,
- Tiator, L.,
- Tieulent, R.,
- Tomasi-Gustaffson, E.,
- Tsubota, H.,
- Ueno, H.,
- Ulmer, P.E.,
- Urciuoli, G.M.,
- Van De Vyver, R.,
- Van Der Meer, R.L.J.,
- Vernin, P.,
- Vlahovic, B.,
- Voskanyan, H.,
- Voutier, E.,
- Watson, J.W.,
- Weinstein, L.B.,
- Wijesooriya, K.,
- Wilson, R.,
- Wojtsekhowski, B.B.,
- Zainea, D.G.,
- Zhang, W.M.,
- Zhao, J.,
- Zhou, Z.L.
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Abstract |
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We have made the first measurements of the virtual Compton scattering process via the e p -> e p gamma exclusive reaction at Q**2 = 1 GeV**2 in the nucleon resonance region. The cross section is obtained at center of mass (CM) backward angle, theta_gamma_gamma*, in a range of total (gamma* p) CM energy W from the proton mass up to W = 1.91 GeV. The data show resonant structures in the first and second resonance regions, and are well reproduced at higher W by the Bethe-Heitler+Born cross section, including t-channel pi0-exchange. At high W, our data, together with existing real photon data, show a striking Q**2 independence. Our measurement of the ratio of H(e,e'p)gamma to H(e,e'p)pi0 cross sections is presented and compared to model predictions. |
Publication details |
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