Exclusive ρ0 meson electroproduction from hydrogen at CLAS

C. Hadjidakis, M. Guidal, M. Garçon, J. M. Laget, E. S. Smith, M. Vanderhaeghen, G. Adams, P. Ambrozewicz, E. Anciant, M. Anghinolfi, B. Asavapibhop, G. Asryan, G. Audit, T. Auger, H. Avakian, H. Bagdasaryan, J. P. Ball, S. Barrow, M. Battaglieri, K. BeardM. Bektasoglu, M. Bellis, N. Benmouna, N. Bianchi, A. S. Biselli, S. Boiarinov, B. E. Bonner, S. Bouchigny, R. Bradford, D. Branford, W. J. Briscoe, W. K. Brooks, V. D. Burkert, C. Butuceanu, J. R. Calarco, D. S. Carman, B. Carnahan, C. Cetina, S. Chen, P. L. Cole, A. Coleman, D. Cords, P. Corvisiero, D. Crabb, H. Crannell, J. P. Cummings, E. De Sanctis, R. De Vita, P. V. Degtyarenko, L. Dennis, K. V. Dharmawardane, K. S. Dhuga, J. P. Didelez, C. Djalali, G. E. Dodge, D. Doughty, P. Dragovitsch, Michael Dugger, S. Dytman, O. P. Dzyubak, H. Egiyan, K. S. Egiyan, L. Elouadrhiri, A. Empl, P. Eugenio, L. Farhi, R. Fatemi, R. J. Feuerbach, T. A. Forest, V. Frolov, H. Funsten, S. J. Gaff, G. Gavalian, G. P. Gilfoyle, K. L. Giovanetti, P. Girard, C. I O Gordon, R. W. Gothe, K. A. Griffioen, M. Guillo, M. Guler, L. Guo, V. Gyurjyan, R. S. Hakobyan, J. Hardie, D. Heddle, F. W. Hersman, K. Hicks, H. Hleiqawi, M. Holtrop, E. Hourany, J. Hu, C. E. Hyde-Wright, Y. Ilieva, D. Ireland, M. M. Ito, D. Jenkins, H. S. Jo, K. Joo, H. G. Juengst, J. H. Kelley, J. Kellie, M. Khandaker, K. Y. Kim, K. Kim, W. Kim, A. Klein, F. J. Klein, A. V. Klimenko, M. Klusman, M. Kossov, L. H. Kramer, S. E. Kuhn, J. Kuhn, J. Lachniet, J. Langheinrich, D. Lawrence, T. Lee, Ji Li, K. Livingstone, K. Lukashin, J. J. Manak, C. Marchand, S. McAleer, J. W C McNabb, B. A. Mecking, J. J. Melone, M. D. Mestayer, C. A. Meyer, K. Mikhailov, R. Minehart, M. Mirazita, R. Miskimen, L. Morand, S. A. Morrow, V. Muccifora, J. Mueller, G. S. Mutchler, J. Napolitano, R. Nasseripour, S. O. Nelson, S. Niccolai, G. Niculescu, I. Niculescu, B. B. Niczyporuk, R. A. Niyazov, M. Nozar, G. V. O'Rielly, M. Osipenko, K. Park, E. Pasyuk, G. Peterson, S. A. Philips, N. Pivnyuk, D. Pocanic, O. Pogorelko, E. Polli, S. Pozdniakov, B. M. Preedom, J. W. Price, Y. Prok, D. Protopopescu, L. M. Qin, B. A. Raue, G. Riccardi, G. Ricco, M. Ripani, Barry Ritchie, F. Ronchetti, P. Rossi, G. Rosner, D. Rowntree, P. D. Rubin, F. Sabatié, K. Sabourov, C. Salgado, J. P. Santoro, V. Sapunenko, R. A. Schumacher, V. S. Serov, Y. G. Sharabian, J. Shaw, S. Simionatto, A. V. Skabelin, L. C. Smith, D. I. Sober, M. Spraker, A. Stavinsky, S. Stepanyan, B. E. Stokes, P. Stoler, S. Strauch, M. Taiuti, S. Taylor, D. J. Tedeschi, U. Thoma, R. Thompson, A. Tkabladze, L. Todor, C. Tur, M. Ungaro, M. F. Vineyard, A. V. Vlassov, K. Wang, L. B. Weinstein, H. Weller, D. P. Weygand, C. S. Whisnant, M. Williams, E. Wolin, M. H. Wood, A. Yegneswaran, J. Yun, L. Zana

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Abstract

The longitudinal and transverse components of the cross section for the ep → e′ pρ0 reaction were measured in Hall B at Jefferson Laboratory using the CLAS detector. The data were taken with a 4.247 GeV electron beam and were analyzed in a range of xB from 0.2 to 0.6 and of Q2 from 1.5 to 3.0 GeV2. The data are compared to a Regge model based on effective hadronic degrees of freedom and to a calculation based on Generalized Parton Distributions. It is found that, at our lowest xB values, the transverse part of the cross section is well described by the former approach while the longitudinal part can be reproduced by the latter.

Original languageEnglish (US)
Pages (from-to)256-264
Number of pages9
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume605
Issue number3-4
DOIs
StatePublished - Jan 13 2005

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ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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Hadjidakis, C., Guidal, M., Garçon, M., Laget, J. M., Smith, E. S., Vanderhaeghen, M., Adams, G., Ambrozewicz, P., Anciant, E., Anghinolfi, M., Asavapibhop, B., Asryan, G., Audit, G., Auger, T., Avakian, H., Bagdasaryan, H., Ball, J. P., Barrow, S., Battaglieri, M., ... Zana, L. (2005). Exclusive ρ0 meson electroproduction from hydrogen at CLAS. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 605(3-4), 256-264. https://doi.org/10.1016/j.physletb.2004.11.019