Beam-charge azimuthal asymmetry and deeply virtual Compton scattering

A. Airapetian; H.P. Blok; T. Chen; W.H.A. Hesselink; A. Laziev; P.B. van der Nat; J. Volmer; S. Wang

doi:10.1103/PhysRevD.75.011103

Beam-charge azimuthal asymmetry and deeply virtual Compton scattering

A. Airapetian, H.P. Blok, T. Chen, W.H.A. Hesselink, A. Laziev, P.B. van der Nat, J. Volmer, S. Wang

Research output: Contribution to Journal › Article › Academic › peer-review

Abstract

The first observation of an azimuthal cross section asymmetry with respect to the charge of the incoming lepton beam is reported from a study of hard exclusive electroproduction of real photons. The data have been accumulated by the HERMES experiment at DESY, in which the HERA 27.6 GeV electron or positron beam scattered off an unpolarized hydrogen gas target. The observed asymmetry is attributed to the interference between the Bethe-Heitler process and the deeply virtual Compton scattering (DVCS) process. The interference term is sensitive to DVCS amplitudes, which provide the most direct access to generalized parton distributions. © 2007 The American Physical Society.

Original language	English
Journal	Physical Review D
Volume	75
Issue number	1
DOIs	https://doi.org/10.1103/PhysRevD.75.011103
Publication status	Published - 2007

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Beam-charge azimuthal asymmetry and deeply virtual Compton scattering

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10.1103/PhysRevD.75.011103

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title = "Beam-charge azimuthal asymmetry and deeply virtual Compton scattering",

abstract = "The first observation of an azimuthal cross section asymmetry with respect to the charge of the incoming lepton beam is reported from a study of hard exclusive electroproduction of real photons. The data have been accumulated by the HERMES experiment at DESY, in which the HERA 27.6 GeV electron or positron beam scattered off an unpolarized hydrogen gas target. The observed asymmetry is attributed to the interference between the Bethe-Heitler process and the deeply virtual Compton scattering (DVCS) process. The interference term is sensitive to DVCS amplitudes, which provide the most direct access to generalized parton distributions. {\textcopyright} 2007 The American Physical Society.",

author = "A. Airapetian and H.P. Blok and T. Chen and W.H.A. Hesselink and A. Laziev and {van der Nat}, P.B. and J. Volmer and S. Wang",

note = "Beam-charge azimuthal asymmetry and deeply virtual Compton scattering",

year = "2007",

doi = "10.1103/PhysRevD.75.011103",

language = "English",

volume = "75",

journal = "Physical Review D",

issn = "1550-7998",

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T1 - Beam-charge azimuthal asymmetry and deeply virtual Compton scattering

AU - Airapetian, A.

AU - Blok, H.P.

AU - Chen, T.

AU - Hesselink, W.H.A.

AU - Laziev, A.

AU - van der Nat, P.B.

AU - Volmer, J.

AU - Wang, S.

N1 - Beam-charge azimuthal asymmetry and deeply virtual Compton scattering

PY - 2007

Y1 - 2007

N2 - The first observation of an azimuthal cross section asymmetry with respect to the charge of the incoming lepton beam is reported from a study of hard exclusive electroproduction of real photons. The data have been accumulated by the HERMES experiment at DESY, in which the HERA 27.6 GeV electron or positron beam scattered off an unpolarized hydrogen gas target. The observed asymmetry is attributed to the interference between the Bethe-Heitler process and the deeply virtual Compton scattering (DVCS) process. The interference term is sensitive to DVCS amplitudes, which provide the most direct access to generalized parton distributions. © 2007 The American Physical Society.

AB - The first observation of an azimuthal cross section asymmetry with respect to the charge of the incoming lepton beam is reported from a study of hard exclusive electroproduction of real photons. The data have been accumulated by the HERMES experiment at DESY, in which the HERA 27.6 GeV electron or positron beam scattered off an unpolarized hydrogen gas target. The observed asymmetry is attributed to the interference between the Bethe-Heitler process and the deeply virtual Compton scattering (DVCS) process. The interference term is sensitive to DVCS amplitudes, which provide the most direct access to generalized parton distributions. © 2007 The American Physical Society.

U2 - 10.1103/PhysRevD.75.011103

DO - 10.1103/PhysRevD.75.011103

M3 - Article

SN - 1550-7998

VL - 75

JO - Physical Review D

JF - Physical Review D

IS - 1

ER -

Beam-charge azimuthal asymmetry and deeply virtual Compton scattering

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