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Theoretical Particle Physics

Publications

Bethe-Heitler type radiative corrections to deeply virtual neutrinoproduction of mesons

Publicaciones

Bethe-Heitler type radiative corrections to deeply virtual neutrinoproduction of mesons

Research areas:

Física Teórica de Partículas

Year:

2013

Type of Publication:

In Proceeding

Authors:

Journal:

Phys.Rev.

Volume:

D87

Pages:

15

Abstract:

We study the electromagnetic Bethe-Heitler type contribution to neutrino-induced deeply virtual meson production (\nuDVMP). Such O(\alpha_{em})-corrections decrease with Q^{2} in the Bjorken regime less steeply than the standard \nuDVMP handbag contribution. Therefore, they are relatively enhanced at high Q^{2}. The Bethe-Heitler terms give rise to an angular correlation between the lepton and hadron scattering planes with harmonics sensitive to the real and imaginary parts of the DVMP amplitude. These corrections constitute a few percent effect in the kinematics of the forthcoming Minerva experiment at Fermilab and should be taken into account in precision tests of GPD parametrizations. For virtualities Q^{2}~100 GeV^{2} these corrections become on a par with DVMP handbag contributions. A computational code, which can be used for the evaluation of these corrections employing various GPD models is provided. We study the electromagnetic Bethe-Heitler type contribution to neutrino-induced deeply virtual meson production (νDVMP). Such O(αem) corrections decrease with Q2 in the Bjorken regime less steeply than the standard νDVMP handbag contribution. Therefore, they are relatively enhanced at high Q2. The Bethe-Heitler terms give rise to an angular correlation between the lepton and hadron scattering planes with harmonics sensitive to the real and imaginary parts of the νDVMP amplitude. These corrections constitute a few percent effect in the kinematics of the forthcoming Minerva experiment at Fermilab and should be taken into account in precision tests of generalized parton distributions parametrizations. For virtualities Q2∼100  GeV2 these corrections become on a par with νDVMP handbag contributions. A computational code, which can be used for the evaluation of these corrections employing various generalized parton distributions models, is provided in the Supplemental Material.

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