Separation of contributions from deeply virtual Compton scattering and its interference with the Bethe-Heitler process in measurements on a hydrogen target

The HERMES collaboration

doi:10.1088/1126-6708/2009/11/083

Separation of contributions from deeply virtual Compton scattering and its interference with the Bethe-Heitler process in measurements on a hydrogen target

The HERMES collaboration

Justus Liebig University Giessen
University of Michigan, Ann Arbor
A. Alikhanian Yerevan Institute of Physics
German Electron Synchrotron
Brookhaven National Laboratory
Andrzej Soltan Institute for Nuclear Studies
RAS - Saint Petersburg Nuclear Physics Institute
National Institute for Subatomic Physics
Vrije Universiteit Amsterdam
University of Glasgow
Institute for High Energy Physics
National Institute for Nuclear Physics
Istituto Superiore di Sanita
University of Ferrara
Massachusetts Institute of Technology
Friedrich-Alexander University Erlangen-Nürnberg
University of Illinois at Urbana-Champaign
Siemens
University of Colorado Boulder
Johannes Gutenberg University Mainz
TRIUMF
CNRS/IN2P3
Goethe University Frankfurt

Research output: Contribution to journal › Article › peer-review

29 Scopus citations

Abstract

Hard exclusive leptoproduction of real photons from an unpolarized proton target is studied in an effort to elucidate generalized parton distributions. The data accumulated during the years 1996-2005 with the HERMES spectrometer are analyzed to yield asymmetries with respect to the combined dependence of the cross section on beam helicity and charge, thereby revealing previously unseparated contributions from deeply virtual Compton scattering and its interference with the Bethe-Heitler process. The integrated luminosity is sufficient to show correlated dependences on two kinematic variables, and provides the most precise determination of the dependence on only the beam charge.

Original language	English
Journal	Journal of High Energy Physics
Volume	2009
Issue number	11
DOIs	https://doi.org/10.1088/1126-6708/2009/11/083
State	Published - 18 Nov 2009

Keywords

Lepton-nucleon scattering

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10.1088/1126-6708/2009/11/083

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@article{287219111e2946a0a88f0f5801b8a8c2,

title = "Separation of contributions from deeply virtual Compton scattering and its interference with the Bethe-Heitler process in measurements on a hydrogen target",

abstract = "Hard exclusive leptoproduction of real photons from an unpolarized proton target is studied in an effort to elucidate generalized parton distributions. The data accumulated during the years 1996-2005 with the HERMES spectrometer are analyzed to yield asymmetries with respect to the combined dependence of the cross section on beam helicity and charge, thereby revealing previously unseparated contributions from deeply virtual Compton scattering and its interference with the Bethe-Heitler process. The integrated luminosity is sufficient to show correlated dependences on two kinematic variables, and provides the most precise determination of the dependence on only the beam charge.",

keywords = "Lepton-nucleon scattering",

author = "\{The HERMES collaboration\} and A. Airapetian and N. Akopov and Z. Akopov and Aschenauer, \{E. C.\} and W. Augustyniak and R. Avakian and A. Avetissian and E. Avetisyan and B. Ball and S. Belostotski and Blok, \{H. P.\} and A. Borissov and J. Bowles and V. Bryzgalov and J. Burns and Capitani, \{G. P.\} and E. Cisbani and G. Ciullo and M. Contalbrigo and Dalpiaz, \{P. F.\} and W. Deconinck and \{De Leo\}, R. and \{De Nardo\}, L. and \{De Sanctis\}, E. and M. Diefenthaler and \{Di Nezza\}, P. and M. D{\"u}ren and M. Ehrenfried and G. Elbakian and F. Ellinghaus and R. Fabbri and A. Fantoni and L. Felawka and S. Frullani and D. Gabbert and G. Gapienko and V. Gapienko and F. Garibaldi and G. Gavrilov and V. Gharibyan and F. Giordano and S. Gliske and C. Hadjidakis and M. Hartig and D. Hasch and G. Hill and A. Hillenbrand and M. Hoek and Y. Holler and Jo, \{H. S.\}",

note = "Publisher Copyright: {\textcopyright} SISSA 2009.",

year = "2009",

month = nov,

day = "18",

doi = "10.1088/1126-6708/2009/11/083",

language = "English",

volume = "2009",

journal = "Journal of High Energy Physics",

issn = "1029-8479",

publisher = "Springer Verlag",

number = "11",

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TY - JOUR

T1 - Separation of contributions from deeply virtual Compton scattering and its interference with the Bethe-Heitler process in measurements on a hydrogen target

AU - The HERMES collaboration

AU - Airapetian, A.

AU - Akopov, N.

AU - Akopov, Z.

AU - Aschenauer, E. C.

AU - Augustyniak, W.

AU - Avakian, R.

AU - Avetissian, A.

AU - Avetisyan, E.

AU - Ball, B.

AU - Belostotski, S.

AU - Blok, H. P.

AU - Borissov, A.

AU - Bowles, J.

AU - Bryzgalov, V.

AU - Burns, J.

AU - Capitani, G. P.

AU - Cisbani, E.

AU - Ciullo, G.

AU - Contalbrigo, M.

AU - Dalpiaz, P. F.

AU - Deconinck, W.

AU - De Leo, R.

AU - De Nardo, L.

AU - De Sanctis, E.

AU - Diefenthaler, M.

AU - Di Nezza, P.

AU - Düren, M.

AU - Ehrenfried, M.

AU - Elbakian, G.

AU - Ellinghaus, F.

AU - Fabbri, R.

AU - Fantoni, A.

AU - Felawka, L.

AU - Frullani, S.

AU - Gabbert, D.

AU - Gapienko, G.

AU - Gapienko, V.

AU - Garibaldi, F.

AU - Gavrilov, G.

AU - Gharibyan, V.

AU - Giordano, F.

AU - Gliske, S.

AU - Hadjidakis, C.

AU - Hartig, M.

AU - Hasch, D.

AU - Hill, G.

AU - Hillenbrand, A.

AU - Hoek, M.

AU - Holler, Y.

AU - Jo, H. S.

PY - 2009/11/18

Y1 - 2009/11/18

N2 - Hard exclusive leptoproduction of real photons from an unpolarized proton target is studied in an effort to elucidate generalized parton distributions. The data accumulated during the years 1996-2005 with the HERMES spectrometer are analyzed to yield asymmetries with respect to the combined dependence of the cross section on beam helicity and charge, thereby revealing previously unseparated contributions from deeply virtual Compton scattering and its interference with the Bethe-Heitler process. The integrated luminosity is sufficient to show correlated dependences on two kinematic variables, and provides the most precise determination of the dependence on only the beam charge.

AB - Hard exclusive leptoproduction of real photons from an unpolarized proton target is studied in an effort to elucidate generalized parton distributions. The data accumulated during the years 1996-2005 with the HERMES spectrometer are analyzed to yield asymmetries with respect to the combined dependence of the cross section on beam helicity and charge, thereby revealing previously unseparated contributions from deeply virtual Compton scattering and its interference with the Bethe-Heitler process. The integrated luminosity is sufficient to show correlated dependences on two kinematic variables, and provides the most precise determination of the dependence on only the beam charge.

KW - Lepton-nucleon scattering

UR - https://www.scopus.com/pages/publications/84988891203

U2 - 10.1088/1126-6708/2009/11/083

DO - 10.1088/1126-6708/2009/11/083

M3 - Article

AN - SCOPUS:84988891203

SN - 1029-8479

VL - 2009

JO - Journal of High Energy Physics

JF - Journal of High Energy Physics

IS - 11

ER -

Separation of contributions from deeply virtual Compton scattering and its interference with the Bethe-Heitler process in measurements on a hydrogen target

Abstract

Keywords

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