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Search for a two-photon exchange contribution to inclusive deep-inelastic scattering

  • A. Airapetian
  • , N. Akopov
  • , Z. Akopov
  • , E. C. Aschenauer
  • , W. Augustyniak
  • , R. Avakian
  • , A. Avetissian
  • , E. Avetisyan
  • , B. Ball
  • , S. Belostotski
  • , N. Bianchi
  • , H. P. Blok
  • , H. Böttcher
  • , C. Bonomo
  • , A. Borissov
  • , J. Bowles
  • , V. Bryzgalov
  • , J. Burns
  • , G. P. Capitani
  • , E. Cisbani
  • G. Ciullo, M. Contalbrigo, P. F. Dalpiaz, W. Deconinck, L. De Nardo, E. De Sanctis, M. Diefenthaler, P. Di Nezza, M. Düren, M. Ehrenfried, G. Elbakian, F. Ellinghaus, R. Fabbri, A. Fantoni, L. Felawka, S. Frullani, D. Gabbert, G. Gapienko, V. Gapienko, F. Garibaldi, V. Gharibyan, F. Giordano, S. Gliske, C. Hadjidakis, M. Hartig, D. Hasch, G. Hill, A. Hillenbrand, M. Hoek, Y. Holler, I. Hristova, Y. Imazu, A. Ivanilov, H. E. Jackson, H. S. Jo, S. Joosten, R. Kaiser, G. Karyan, T. Keri, E. Kinney, A. Kisselev, V. Korotkov, V. Kozlov, P. Kravchenko, L. Lagamba, R. Lamb, L. Lapikás, I. Lehmann, P. Lenisa, A. López Ruiz, W. Lorenzon, X. G. Lu, X. R. Lu, B. Q. Ma, D. Mahon, N. C.R. Makins, L. Manfré, Y. Mao, B. Marianski, A. Martínez de la Ossa, H. Marukyan, C. A. Miller, Y. Miyachi, A. Movsisyan, V. Muccifora, M. Murray, A. Mussgiller, Y. Naryshkin, A. Nass, M. Negodaev, W. D. Nowak, L. L. Pappalardo, R. Perez-Benito, M. Raithel, P. E. Reimer, A. R. Reolon, C. Riedl, K. Rith, G. Rosner, A. Rostomyan, J. Rubin, D. Ryckbosch, Y. Salomatin, F. Sanftl, A. Schäfer, G. Schnell, K. P. Schüler, B. Seitz, T. A. Shibata, V. Shutov, M. Stancari, M. Statera, E. Steffens, J. J.M. Steijger, H. Stenzel, J. Stewart, F. Stinzing, S. Taroian, A. Terkulov, A. Trzcinski, M. Tytgat, A. Vandenbroucke, P. B. van der Nat, Y. Van Haarlem, C. Van Hulse, M. Varanda, D. Veretennikov, V. Vikhrov, I. Vilardi, S. Wang, S. Yaschenko, H. Ye, Z. Ye, W. Yu, D. Zeiler, B. Zihlmann, P. Zupranski
  • Justus Liebig University Giessen
  • University of Michigan, Ann Arbor
  • A. Alikhanian Yerevan Institute of Physics
  • German Electron Synchrotron
  • Andrzej Soltan Institute for Nuclear Studies
  • RAS - Saint Petersburg Nuclear Physics Institute
  • National Institute for Nuclear Physics
  • National Institute for Subatomic Physics
  • Vrije Universiteit Amsterdam
  • University of Glasgow
  • Institute for High Energy Physics
  • Friedrich-Alexander University Erlangen-Nürnberg
  • University of Illinois at Urbana-Champaign
  • University of Colorado Boulder
  • TRIUMF
  • Ghent University
  • Institute of Science Tokyo
  • Argonne National Laboratory
  • RAS - P.N. Lebedev Physics Institute
  • Peking University
  • University of Regensburg
  • Joint Institute for Nuclear Research

Research output: Contribution to journalArticlepeer-review

42 Scopus citations

Abstract

The transverse-target single-spin asymmetry for inclusive deep-inelastic scattering with effectively unpolarized electron and positron beams off a transversely polarized hydrogen target was measured, with the goal of searching for a two-photon exchange signal in the kinematic range 0.007 < xB < 0.9 and 0.25 GeV2 < Q2 < 20 GeV2. In two separate regions Q2 > 1 GeV2 and Q2 < 1 GeV2, and for both electron and positron beams, the asymmetries are found to be consistent with zero within statistical and systematic uncertainties, which are of order 10-3 for the asymmetries integrated over xB.

Original languageEnglish
Pages (from-to)351-354
Number of pages4
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume682
Issue number4-5
DOIs
StatePublished - 4 Jan 2010

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