Exclusive neutrino-production of a charmed vector meson and transversity gluon GPDs

Abstract

We calculate at the leading order in ${\alpha }_s$ the QCD amplitude for exclusive neutrino production of a $D^{\ast }$ or $D_s^{\ast }$ charmed vector meson on a nucleon. We work in the framework of the collinear QCD approach where generalized parton distributions (GPDs) factorize from perturbatively calculable coefficient functions. We include $O(m_c)$ terms in the coefficient functions and $O(m_D)$ term in the definition of heavy meson distribution amplitudes. The show that the analysis of the angular distribution of the decay $D_{(s)}^{\ast }\to D_{(s)}\pi$ allows to access the transversity gluon GPDs.

7 pages, 1 figure. arXiv admin note: text overlap with arXiv:1702.00316

References in corpus (4)

• Vector meson production from a polarized nucleon
• Weak Deeply Virtual Compton Scattering
• Crossed channel analysis of quark and gluon generalized parton distributions with helicity flip
• Selected vector-meson decay-distributions in reactions of polarized photons with protons

Cited by in corpus (7)

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• Exclusive production of quarkonia pairs in collinear factorization framework
• $D^{\ast }$ and $D_s^{\ast }$ distribution amplitudes from Bethe-Salpeter wave functions
• Generalized Parton Distributions from charged current meson production
• Nucleon Structure from Basis Light-Front Quantization : Status and Prospects
• Probing $D_s^{\ast }$-meson longitudinal twist-2 LCDA
• Chiral-odd generalized parton distributions for the low-lying octet baryons