@article{2ad9d1b8726b4a65a24bf48d53f5a4f8,
title = "Measurement of the beam-spin azimuthal asymmetry associated with deeply-virtual compton scattering",
abstract = "The beam-spin asymmetry in hard electroproduction of photons has been measured. The data have been accumulated by the HERMES experiment at DESY using the HERA 27.6 GeV longitudinally polarized positron beam and an unpolarized hydrogen-gas target. The asymmetry in the azimuthal distribution of the produced photons in the angle φ relative to the lepton scattering plane was determined with respect to the helicity state of the incoming positron beam. The beam-spin analyzing power in the sinφ moment was measured to be -0.23±0.04(stat)±0.03(syst) in the missing-mass range below 1.7 GeV. The observed asymmetry is attributed to the interference of the Bethe-Heitler and deeply virtual Compton scattering processes.",
author = "{HERMES Collaboration} and A. Airapetian and N. Akopov and Z. Akopov and M. Amarian and Aschenauer, {E. C.} and H. Avakian and R. Avakian and A. Avetissian and E. Avetissian and P. Bailey and B. Bains and V. Baturin and C. Baumgarten and M. Beckmann and S. Belostotski and S. Bernreuther and N. Bianchi and H. B{\"o}ttcher and A. Borissov and O. Bouhali and M. Bouwhuis and J. Brack and S. Brauksiepe and W. Br{\"u}ckner and A. Br{\"u}ll and I. Brunn and Bulten, {H. J.} and Capitani, {G. P.} and P. Chumney and E. Cisbani and G. Ciullo and Court, {G. R.} and Dalpiaz, {P. F.} and {De Leo}, R. and {De Nardo}, L. and {De Sanctis}, E. and {De Schepper}, D. and E. Devitsin and {de Witt Huberts}, {P. K.A.} and {Di Nezza}, P. and M. D{\"u}ren and M. Ehrenfried and G. Elbakian and F. Ellinghaus and J. Ely and R. Fabbri and A. Fantoni and A. Fechtchenko and L. Felawka and Filippone, {B. W.}",
year = "2001",
month = jan,
day = "1",
doi = "10.1103/PhysRevLett.87.182001",
language = "English",
volume = "87",
pages = "182001",
journal = "Physical Review Letters",
issn = "0031-9007",
publisher = "American Physical Society",
number = "18",
}