Double handbag description of proton-antiproton annihilation into a heavy meson pair

Abstract

We propose to describe the process $p\bar{p}\to \overline{D^0}{D}^0$ in a perturbative QCD motivated framework where a double-handbag hard process $ud\bar{u}\bar{d}\to \bar{c}c$ factorizes from transition distribution amplitudes, which are quasi forward hadronic matrix elements of ${\Psi }_q{\Psi }_q{\Psi }_c$ operators, where q denotes light quarks and c denotes the heavy quark. We advocate that the charm-quark mass acts as the large scale allowing this factorization. We calculate this process in the simplified framework of the scalar diquark model and present the expected cross sections for the PANDA experiment at GSI-FAIR.

25 pages

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Cited by in corpus (13)

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• $\bar{p}p$ annihilation into $\bar{D}D$ meson pair within an effective Lagrangian model
• $\bar{D}D$ meson pair production in antiproton-nucleus collisions
• The $\psi$(3770) resonance and its production in $\bar{p}p\to D\bar{D}$
• ${\pi }^{-}p\to D^{-}{\Lambda }_c^{+}$ within the Generalized Parton Picture
• Baryon-to-meson transition distribution amplitudes: formalism and models
• First results of proton antiproton annihilation into a pion pair at large scattering angles within the handbag approach
• Production of heavy meson pairs in $p\bar{p}$ collisions within a double handbag approach
• $\overline{D^0}{D}^0$-production in $p\bar{p}$-collisions within a double handbag approach
• A perturbative QCD approach to ${\pi }^{-}p\to D^{-}{\Lambda }_c^{+}$