Next-to-leading order corrections to timelike, spacelike, and double deeply virtual Compton scattering

Journal Article · Tue Feb 01 04:00:00 EST 2011 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.83.034009· OSTI ID:21504869

Pire, B ^[1]; Szymanowski, L; Wagner, J ^[2]

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1. CPHT, Ecole Polytechnique, CNRS, 91128 Palaiseau (France)
2. Soltan Institute for Nuclear Studies, Hoza 69, 00-681 Warsaw (Poland)

We calculate the O({alpha}{sub s}) corrections to the timelike, spacelike, and double deeply virtual Compton scattering amplitudes in the generalized Bjorken scaling region. Special attention is devoted to studies of the difference between the next-to-leading order timelike and spacelike coefficient functions, which plays for this process a role analogous to the large K factor which was much discussed in the analysis of inclusive Drell-Yan cross sections. Also in the present studies the timelike nature of the hard scale gives rise to a new absorptive part of the amplitude and to the presence of characteristic {pi}{sup 2} terms, which can potentially lead to sizable corrections.

• OSTI ID: 21504869
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 3 Vol. 83; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
AMPLITUDES
BASIC INTERACTIONS
COMPTON EFFECT
COMPUTERIZED SIMULATION
CORRECTIONS
CROSS SECTIONS
DRELL MODEL
ELASTIC SCATTERING
ELECTROMAGNETIC INTERACTIONS
INTERACTIONS
SCALING
SCATTERING
SIMULATION