Flavor structure of generalized parton distributions from neutrino experiments

Kopeliovich B.Z.; schmidt, ivan; Siddikov M.

Keywords: Generalized Patron Distribtions, Neutrinos

Abstract

The analysis of deeply virtual meson production is extended to neutrino-production of the pseudo-Goldstone mesons (π,K,η) on nucleons, with the flavor content of the recoil baryon either remaining intact, or changing to a hyperon from the SU(3) octet. We rely on the SU(3) relations and express all the cross sections in terms of the proton generalized parton distributions (GPDs). The corresponding amplitudes are calculated at the leading twist level and in the leading order in αs, using a phenomenological model of GPDs. We provide a computational code, which can be used for evaluation of the cross sections employing various GPD parametrizations. We conclude that these processes can be studied in the experiment Minerva at Fermilab, which could supplement the measurements at JLAB helping to extract the GPD flavor structure from data.

Más información

Título de la Revista: PHYSICAL REVIEW D
Volumen: D86
Editorial: American Physical Society
Fecha de publicación: 2012
Página de inicio: 113018-1
Página final: 113018-10
Idioma: English
Financiamiento/Sponsor: Fondecyt Regular 1120920
DOI:

DOI: http://dx.doi.org/10.1103/PhysRevD.86.113018

Notas: ISI