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Observation of exclusive deeply virtual compton scattering in polarized electron beam asymmetry measurements

Publication ,  Journal Article
Stepanyan, S; Burkert, VD; Elouadrhiri, L; Adams, GS; Anciant, E; Anghinolfi, M; Asavapibhop, B; Audit, G; Auger, T; Avakian, H; Ball, J ...
Published in: Physical Review Letters
January 1, 2001

We report the first results of the beam-spin asymmetry measured in the reaction ep → epγ at a beam energy of 4.25 GeV. A large asymmetry with a sinφ modulation is observed, as predicted for the interference term of deeply virtual compton scattering (DVCS) and the Bethe-Heitler process. The amplitude of this modulation is α=0.202±0.028. In leading-order and leading-twist perturbative QCD, the α is directly proportional to the imaginary part of the DVCS amplitude. © 2001 The American Physical Society.

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Published In

Physical Review Letters

DOI

EISSN

1079-7114

ISSN

0031-9007

Publication Date

January 1, 2001

Volume

87

Issue

18

Start / End Page

182002

Related Subject Headings

  • General Physics
  • 51 Physical sciences
  • 49 Mathematical sciences
  • 40 Engineering
  • 09 Engineering
  • 02 Physical Sciences
  • 01 Mathematical Sciences
 

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Stepanyan, S., Burkert, V. D., Elouadrhiri, L., Adams, G. S., Anciant, E., Anghinolfi, M., … Mc Aleer, S. (2001). Observation of exclusive deeply virtual compton scattering in polarized electron beam asymmetry measurements. Physical Review Letters, 87(18), 182002. https://doi.org/10.1103/PhysRevLett.87.182002
Stepanyan, S., V. D. Burkert, L. Elouadrhiri, G. S. Adams, E. Anciant, M. Anghinolfi, B. Asavapibhop, et al. “Observation of exclusive deeply virtual compton scattering in polarized electron beam asymmetry measurements.” Physical Review Letters 87, no. 18 (January 1, 2001): 182002. https://doi.org/10.1103/PhysRevLett.87.182002.
Stepanyan S, Burkert VD, Elouadrhiri L, Adams GS, Anciant E, Anghinolfi M, et al. Observation of exclusive deeply virtual compton scattering in polarized electron beam asymmetry measurements. Physical Review Letters. 2001 Jan 1;87(18):182002.
Stepanyan, S., et al. “Observation of exclusive deeply virtual compton scattering in polarized electron beam asymmetry measurements.” Physical Review Letters, vol. 87, no. 18, Jan. 2001, p. 182002. Scopus, doi:10.1103/PhysRevLett.87.182002.
Stepanyan S, Burkert VD, Elouadrhiri L, Adams GS, Anciant E, Anghinolfi M, Asavapibhop B, Audit G, Auger T, Avakian H, Ball J, Barrow S, Battaglieri M, Beard K, Bektasoglu M, Bertin P, Bianchi N, Biselli A, Boiarinov S, Bonner BE, Bouchigny S, Branford D, Brooks WK, Calarco JR, Carman DS, Carnahan B, Ciciani L, Cole PL, Coleman A, Cords D, Corvisiero P, Crabb D, Crannell H, Cummings J, Degtiarenko PV, Denizli H, Dennis LC, De Sanctis E, De Vita R, Dharmawardane KV, Djalali C, Dodge GE, Doré D, Doughty D, Dragovitsch P, Dytman S, Eckhause M, Egiyan H, Egiyan KS, Empl A, Fatemi R, Feuerbach RJ, Ficenec J, Fissum K, Forest TA, Freyberger AP, Funsten H, Gaff S, Gai M, Garçon M, Gavalian G, Gilad S, Gilfoyle GP, Giovanetti K, Girard P, Griffioen KA, Guidal M, Guillo M, Gyurjyan V, Hadjidakis C, Hardie J, Heddle D, Hersman FW, Hicks K, Hicks RS, Holtrop M, Hu J, Hyde-Wright CE, Ito MM, Jenkins D, Joo K, Kelley J, Khandaker M, Kim DH, Kim K, Kim KY, Kim W, Klein A, Klein FJ, Klusman M, Kossov M, Kramer LH, Kuhn SE, Laget JM, Lawrence D, Longhi A, Lukashin K, Manak JJ, Marchand C, Mc Aleer S. Observation of exclusive deeply virtual compton scattering in polarized electron beam asymmetry measurements. Physical Review Letters. 2001 Jan 1;87(18):182002.

Published In

Physical Review Letters

DOI

EISSN

1079-7114

ISSN

0031-9007

Publication Date

January 1, 2001

Volume

87

Issue

18

Start / End Page

182002

Related Subject Headings

  • General Physics
  • 51 Physical sciences
  • 49 Mathematical sciences
  • 40 Engineering
  • 09 Engineering
  • 02 Physical Sciences
  • 01 Mathematical Sciences