Journal article

Cross sections for hard exclusive electroproduction of π+ mesons on a hydrogen target


Authors listAirapetian, A.; Akopov, N.; Akopov, Z.; Aschenauer, E. C.; Augustyniak, W.; Avetissian, A.; Avetissian, E.; Barion, L.; Belostotski, S.; Bianchi, N.; Blok, H. P.; Bottcher, H.; Bonomo, C.; Borissov, A.; Bryzgalov, V.; Burns, J.; Capiluppi, M.; Capitani, G. P.; Cisbani, E.; Ciullo, G.; Contalbrigo, M.; Dalpiaz, P. F.; Deconinck, W.; De Leo, R.; Demey, M.; De Nardo, L.; De Sanctis, E.; Diefenthaler, M.; Di Nezza, P.; Dreschler, J.; Duren, M.; Ehrenfried, M.; Elbakian, G.; Ellinghaus, F.; Fabbri, R.; Fantoni, A.; Frullani, S.; Gabbert, D.; Gapienko, G.; Gapienko, V.; Garibaldi, F.; Gavrilov, G.; Gharibyan, V.; Giordano, E.; Gliske, S.; Guler, H.; Hadjidakis, C.; Hasch, D.; Hill, G.; Hillenbrand, A.; Hoek, M.; Hristova, I.; Ilyichev, A.; Imazu, Y.; Ivanilov, A.; Jackson, H. E.; Joosten, S.; Kaiser, R.; Keri, T.; Kinney, E.; Kisselev, A.; Kopytin, M.; Korotkov, V.; Kravchenko, P.; Krivokhijine, V. G.; Lagamba, L.; Lamb, R.; Lapikas, L.; Lehmann, I.; Lenisa, P.; Linden-Levy, L. A.; Ruiz, A. Lopez; Lorenzon, W.; Lu, S.; Lu, X.; Mahon, D.; Makins, N. C. R.; Marianski, B.; Marukyan, H.; Miller, C. A.; Miyachi, Y.; Muccifora, V.; Murray, M.; Mussgiller, A.; Nappi, E.; Naryshkin, Y.; Nass, A.; Negodaev, M.; Nowak, W. -D.; Pappalardo, L. L.; Perez-Benito, R.; Pickert, N.; Raithel, M.; Reimer, P. E.; Reolon, A. R.; Riedl, C.; Rith, K.; Rock, S. E.; Rosner, G.; Rostomyan, A.; Rubacek, L.; Rubin, J.; Ryckbosch, D.; Salomatin, Y.; Schafer, A.; Schnell, G.; Schuler, K. P.; Seitz, B.; Shearer, C.; Shibata, T. -A.; Shutov, V.; Stancari, M.; Statera, M.; Steijger, J. J. M.; Stenzel, H.; Stewart, J.; Stinzing, E.; Streit, J.; Taroian, S.; Thomas, E.; Trzcinski, A.; Tytgat, M.; Vandenbroucke, A.; Van der Nat, P. B.; Van der Steenhoven, G.; Van Haarlem, Y.; Van Hulse, C.; Varanda, M.; Veretennikov, D.; Vikhrov, V.; Vilardi, I.; Vogel, C.; Wang, S.; Yaschenko, S.; Ye, H.; Ye, Z.; Yen, S.; Yu, W.; Zeiler, D.; Zihlmann, B.; Zupranski, P.

Publication year2008

Pages486-492

JournalPhysics Letters B

Volume number659

Issue number3

ISSN0370-2693

eISSN1873-2445

Open access statusHybrid

DOI Linkhttps://doi.org/10.1016/j.physletb.2007.11.079

PublisherElsevier


Abstract
The exclusive electroproduction of pi(+) mesons was studied with the HERMES spectrometer at the DESY laboratory by scattering 27.6 GeV positron and electron beams off an internal hydrogen gas target. The virtual-photon cross sections were measured as a function of the Mandelstarn variable t and the squared four momentum -Q(2) of the exchanged virtual photon. A model calculation based on Generalized Parton Distributions is in fair agreement with the data at low values of It I if power corrections are included. A model calculation based on the Regge formalism gives a good description of the magnitude and the t and Q(2) dependences of the cross section. (c) 2007 Elsevier B.V. All rights reserved.



Citation Styles

Harvard Citation styleAirapetian, A., Akopov, N., Akopov, Z., Aschenauer, E., Augustyniak, W., Avetissian, A., et al. (2008) Cross sections for hard exclusive electroproduction of π+ mesons on a hydrogen target, Physics Letters B, 659(3), pp. 486-492. https://doi.org/10.1016/j.physletb.2007.11.079

APA Citation styleAirapetian, A., Akopov, N., Akopov, Z., Aschenauer, E., Augustyniak, W., Avetissian, A., Avetissian, E., Barion, L., Belostotski, S., Bianchi, N., Blok, H., Bottcher, H., Bonomo, C., Borissov, A., Bryzgalov, V., Burns, J., Capiluppi, M., Capitani, G., Cisbani, E., ...Zupranski, P. (2008). Cross sections for hard exclusive electroproduction of π+ mesons on a hydrogen target. Physics Letters B. 659(3), 486-492. https://doi.org/10.1016/j.physletb.2007.11.079



Keywords


PHYSICS EVENT GENERATIONPION FORM-FACTORQ2

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