Exclusive neutrino-production of a charmed vector meson and transversity gluon GPDs - Archive ouverte HAL
Pré-Publication, Document De Travail Année : 2017

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

Résumé

We calculate at the leading order in $\alpha_s$ the QCD amplitude for exclusive neutrino production of a $D^*$ or $D_s^*$ 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. We show that the analysis of the angular distribution of the decay $D_{(s)}^*\to D_{(s)} \pi$ allows to access the transversity gluon GPDs.

Dates et versions

hal-01635526 , version 1 (15-11-2017)

Identifiants

Citer

B. Pire, L. Szymanowski. Exclusive neutrino-production of a charmed vector meson and transversity gluon GPDs. 2017. ⟨hal-01635526⟩
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