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Electroproduction of (1020) mesons at 1.4≤Q2≤3.8 GeV2 measured with the CLAS spectrometer

  • J. P. Santoro
  • , E. S. Smith
  • , M. Garçon
  • , M. Guidal
  • , J. M. Laget
  • , C. Weiss
  • , G. Adams
  • , M. J. Amaryan
  • , M. Anghinolfi
  • , G. Asryan
  • , G. Audit
  • , H. Avakian
  • , H. Bagdasaryan
  • , N. Baillie
  • , J. Ball
  • , J. P. Ball
  • , N. A. Baltzell
  • , S. Barrow
  • , M. Battaglieri
  • , I. Bedlinskiy
  • M. Bektasoglu, M. Bellis, N. Benmouna, B. L. Berman, A. S. Biselli, L. Blaszczyk, B. E. Bonner, C. Bookwalter, S. Bouchigny, S. Boiarinov, R. Bradford, D. Branford, W. J. Briscoe, W. K. Brooks, S. Bültmann, V. D. Burkert, C. Butuceanu, J. R. Calarco, S. L. Careccia, D. S. Carman, L. Casey, A. Cazes, S. Chen, L. Cheng, P. L. Cole, P. Collins, P. Coltharp, D. Cords, P. Corvisiero, D. Crabb, H. Crannell, V. Crede, J. P. Cummings, D. Dale, N. Dashyan, R. De Masi, E. De Sanctis, R. De Vita, P. V. Degtyarenko, H. Denizli, L. Dennis, A. Deur, S. Dhamija, K. V. Dharmawardane, K. S. Dhuga, R. Dickson, C. Djalali, G. E. Dodge, D. Doughty, M. Dugger, S. Dytman, O. P. Dzyubak, H. Egiyan, K. S. Egiyan, L. El Fassi, L. Elouadrhiri, P. Eugenio, R. Fatemi, G. Fedotov, R. J. Feuerbach, J. Ficenec, T. A. Forest, A. Fradi, H. Funsten, G. Gavalian, N. Gevorgyan, G. P. Gilfoyle, K. L. Giovanetti, F. X. Girod, J. T. Goetz, W. Gohn, C. I.O. Gordon, R. W. Gothe, L. Graham, K. A. Griffioen, M. Guillo, N. Guler, L. Guo, V. Gyurjyan, C. Hadjidakis, K. Hafidi, H. Hakobyan, C. Hanretty, J. Hardie, N. Hassall, D. Heddle, F. W. Hersman, K. Hicks, I. Hleiqawi, M. Holtrop, C. E. Hyde-Wright, Y. Ilieva, D. G. Ireland, B. S. Ishkhanov, E. L. Isupov, M. M. Ito, D. Jenkins, H. S. Jo, J. R. Johnstone, K. Joo, H. G. Juengst, N. Kalantarians, D. Keller, J. D. Kellie, M. Khandaker, W. Kim, A. Klein, F. J. Klein, A. V. Klimenko, M. Kossov, Z. Krahn, L. H. Kramer, V. Kubarovsky, J. Kuhn, S. E. Kuhn, S. V. Kuleshov, V. Kuznetsov, J. Lachniet, J. Langheinrich, D. Lawrence, Ji Li, K. Livingston, H. Y. Lu, M. MacCormick, C. Marchand, N. Markov, P. Mattione, S. McAleer, B. McKinnon, J. W.C. McNabb, B. A. Mecking, S. Mehrabyan, J. J. Melone, M. D. Mestayer, C. A. Meyer, T. Mibe, K. Mikhailov, R. Minehart, M. Mirazita, R. Miskimen, V. Mokeev, L. Morand, B. Moreno, K. Moriya, S. A. Morrow, M. Moteabbed, J. Mueller, E. Munevar, G. S. Mutchler, P. Nadel-Turonski, R. Nasseripour, S. Niccolai, G. Niculescu, I. Niculescu, B. B. Niczyporuk, M. R. Niroula, R. A. Niyazov, M. Nozar, G. V. O'Rielly, M. Osipenko, A. I. Ostrovidov, K. Park, S. Park, E. Pasyuk, C. Paterson, S. Anefalos Pereira, S. A. Philips, J. Pierce, N. Pivnyuk, D. Pocanic, O. Pogorelko, I. Popa, S. Pozdniakov, B. M. Preedom, J. W. Price, S. Procureur, Y. Prok, D. Protopopescu, L. M. Qin, B. A. Raue, G. Riccardi, G. Ricco, M. Ripani, B. G. Ritchie, G. Rosner, P. Rossi, F. Sabatié, M. S. Saini, J. Salamanca, C. Salgado, V. Sapunenko, D. Schott, R. A. Schumacher, V. S. Serov, Y. G. Sharabian, D. Sharov, N. V. Shvedunov, A. V. Skabelin, L. C. Smith, D. I. Sober, D. Sokhan, A. Stavinsky, S. S. Stepanyan, S. Stepanyan, B. E. Stokes, P. Stoler, I. I. Strakovsky, S. Strauch, M. Taiuti, D. J. Tedeschi, A. Tkabladze, S. Tkachenko, L. Todor, C. Tur, M. Ungaro, M. F. Vineyard, A. V. Vlassov, D. P. Watts, L. B. Weinstein, D. P. Weygand, M. Williams, E. Wolin, M. H. Wood, A. Yegneswaran, M. Yurov, L. Zana, J. Zhang, B. Zhao, Z. W. Zhao
  • Virginia Polytechnic Institute and State University
  • Catholic University of America
  • Thomas Jefferson National Accelerator Facility
  • CEA Saclay
  • Institut de Physique Nucléaire Orsay
  • Rensselaer Polytechnic Institute
  • Old Dominion University
  • National Institute for Nuclear Physics
  • A. Alikhanian Yerevan Institute of Physics
  • College of William and Mary
  • Arizona State University
  • University of South Carolina
  • Florida State University
  • Alikhanov Institute for Theoretical and Experimental Physics
  • Ohio University
  • Carnegie Mellon University
  • George Washington University
  • Fairfield University
  • Rice University
  • University of Edinburgh
  • Universidad Técnica Federico Santa Maria
  • University of New Hampshire
  • Idaho State University
  • University of Virginia
  • University of Pittsburgh
  • Florida International University
  • Christopher Newport University
  • Argonne National Laboratory
  • Lomonosov Moscow State University
  • University of Richmond
  • James Madison University
  • University of California at Los Angeles
  • University of Connecticut
  • University of Glasgow
  • Norfolk State University
  • Kyungpook National University
  • University of Massachusetts
  • California State University Dominguez Hills
  • Massachusetts Institute of Technology
  • Union College

Research output: Contribution to journalArticlepeer-review

40 Scopus citations

Abstract

Electroproduction of exclusive vector mesons has been studied with the CLAS detector in the kinematic range 1.4≤Q2≤3.8 GeV2,0.0≤t'≤3.6 GeV2, and 2.0≤W≤3.0 GeV. The scaling exponent for the total cross section as 1/(Q2+M2)n was determined to be n=2.49±0.33. The slope of the four-momentum transfer t' distribution is b=0.98±0.17 GeV-2. Under the assumption of s-channel helicity conservation, we determine the ratio of longitudinal to transverse cross sections to be R=0.86±0.24. A two-gluon exchange model is able to reproduce the main features of the data.

Original languageEnglish
Article number025210
JournalPhysical Review C - Nuclear Physics
Volume78
Issue number2
DOIs
StatePublished - 18 Aug 2008

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