Twist-three observables in deeply virtual Compton scattering on the nucleon

A. V. Belitsky; A. Kirchner; D. Müller; A. Schäfer

doi:10.1016/S0370-2693(01)00608-6

Twist-three observables in deeply virtual Compton scattering on the nucleon

A. V. Belitsky, A. Kirchner, D. Müller, A. Schäfer

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

34 Scopus citations

Abstract

We study twist-three effects in deeply virtual Compton scattering on an unpolarized spin-1/2 target. A careful definition of observables as Fourier moments w.r.t. the azimuthal angle allows for a clear separation of twist-two and -three effects. Although the latter are power suppressed, they give leading contributions to the twist-three asymmetries and do not affect the twist-two observables.

Original language	English (US)
Pages (from-to)	117-124
Number of pages	8
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	510
Issue number	1-4
DOIs	https://doi.org/10.1016/S0370-2693(01)00608-6
State	Published - Jun 21 2001
Externally published	Yes

Keywords

Asymmetries
Deeply virtual Compton scattering
Generalized parton distribution
Twist-three contributions

ASJC Scopus subject areas

Nuclear and High Energy Physics

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10.1016/S0370-2693(01)00608-6

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abstract = "We study twist-three effects in deeply virtual Compton scattering on an unpolarized spin-1/2 target. A careful definition of observables as Fourier moments w.r.t. the azimuthal angle allows for a clear separation of twist-two and -three effects. Although the latter are power suppressed, they give leading contributions to the twist-three asymmetries and do not affect the twist-two observables.",

keywords = "Asymmetries, Deeply virtual Compton scattering, Generalized parton distribution, Twist-three contributions",

author = "Belitsky, {A. V.} and A. Kirchner and D. M{\"u}ller and A. Sch{\"a}fer",

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T1 - Twist-three observables in deeply virtual Compton scattering on the nucleon

AU - Belitsky, A. V.

AU - Kirchner, A.

AU - Müller, D.

AU - Schäfer, A.

PY - 2001/6/21

Y1 - 2001/6/21

N2 - We study twist-three effects in deeply virtual Compton scattering on an unpolarized spin-1/2 target. A careful definition of observables as Fourier moments w.r.t. the azimuthal angle allows for a clear separation of twist-two and -three effects. Although the latter are power suppressed, they give leading contributions to the twist-three asymmetries and do not affect the twist-two observables.

AB - We study twist-three effects in deeply virtual Compton scattering on an unpolarized spin-1/2 target. A careful definition of observables as Fourier moments w.r.t. the azimuthal angle allows for a clear separation of twist-two and -three effects. Although the latter are power suppressed, they give leading contributions to the twist-three asymmetries and do not affect the twist-two observables.

KW - Asymmetries

KW - Deeply virtual Compton scattering

KW - Generalized parton distribution

KW - Twist-three contributions

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SN - 0370-2693

VL - 510

SP - 117

EP - 124

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

IS - 1-4

ER -

Twist-three observables in deeply virtual Compton scattering on the nucleon

Abstract

Keywords

ASJC Scopus subject areas

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