Proton-Antiproton Annihilation into a Lambda_c-Antilambda_c Pair

Abstract

The process p-pbar -> Lambda_c-Antilambda_c is investigated within the handbag approach. It is shown that the dominant dynamical mechanism, characterized by the partonic subprocess u-ubar -> c-cbar factorizes in the sense that only the subprocess contains highly virtual partons, a gluon to lowest order of perturbative QCD, while the hadronic matrix elements embody only soft scales and can be parameterized in terms of helicity flip and non-flip generalized parton distributions. Modelling these parton distributions by overlaps of light-cone wave functions for the involved baryons we are able to predict cross sections and spin correlation parameters for the process of interest.

39 pages, 7 figures, problems with printout of figures resolved, Ref. 33 and referring sentences in section 4 changed

References in corpus (26)

• New Generation of Parton Distributions with Uncertainties from Global QCD Analysis
• Wave Functions, Evolution Equations and Evolution Kernels from Light-Ray Operators of QCD
• Unraveling hadron structure with generalized parton distributions
• Light-Cone Wavefunction Representation of Deeply Virtual Compton Scattering
• Masses of excited heavy baryons in the relativistic quark-diquark picture
• Generalized parton distributions from nucleon form factor data
• Generalized parton distributions with helicity flip
• Nonforward parton densities and soft mechanism for form factors and wide-angle Compton scattering in QCD
• Linking Parton Distributions to Form Factors and Compton Scattering
• Nucleon Form Factors in QCD
• Charmed-Hadron Fragmentation Functions from CERN LEP1 Revisited
• Diquarks and Λ_{b}\toΛ_c weak decays
• Distribution Amplitudes of the Lambda_b Baryon in QCD
• The handbag contribution to gamma gamma to pi pi and K K
• Time ordering in off-diagonal parton distributions
• Perturbative and non-perturbative QCD corrections to wide-angle Compton scattering
• Compton Scattering Cross Section on the Proton at High Momentum Transfer
• Large momentum transfer electroproduction of mesons
• Skewed Parton Distributions in Real and Virtual Compton Scattering
• Nucleon distribution amplitudes from lattice QCD
• Two-Photon Annihilation into Baryon-Antibaryon Pairs
• Measurement of the Average Polarization of b Baryons in Hadronic Z^0 Decays
• Signatures of the handbag mechanism in wide-angle photoproduction of pseudoscalar mesons
• Exclusive annihilation p pbar -> gamma gamma in a generalized parton picture
• Test of the heavy quark-light diquark approximation for baryons with a heavy quark
• Heavy quark distribution functions in heavy baryons

Cited by in corpus (21)

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• Production of charmed baryon ${\Lambda }_c(2940{)}^{+}$ at PANDA
• Study of $e^{+}{e}^{-}\to p\bar{p}$ in the vicinity of $\psi (3770)$
• Reaction $\bar{p}p\to {\bar{\Lambda }}_c^{-}{\Lambda }_c^{+}$ within an effective Lagrangian model
• Double handbag description of proton-antiproton annihilation into a heavy meson pair
• Production of charmed baryons in $\bar{p}p$ collisions close to their thresholds
• Role of $Y(4630)$ in the $p\bar{p}\to {\Lambda }_c{\bar{\Lambda }}_c$ reaction near threshold
• Possible ${\Lambda }_c{\bar{\Lambda }}_c$ molecular states and their productions in nulceon-antinulceon collision
• Charm production in antiproton-proton annihilation
• $\bar{D}D$ meson pair production in antiproton-nucleus collisions
• $\bar{p}p$ annihilation into $\bar{D}D$ meson pair within an effective Lagrangian model
• ${\pi }^{-}p\to D^{-}{\Lambda }_c^{+}$ within the Generalized Parton Picture
• Charmed-baryon production in antiproton-proton collisions within an effective Lagrangian model
• Cross sections for 2-to-3 meson-meson scattering
• Production of single-charmed baryons in a quark model approach
• First results of proton antiproton annihilation into a pion pair at large scattering angles within the handbag approach
• $\overline{D^0}{D}^0$-production in $p\bar{p}$-collisions within a double handbag approach
• Production of heavy meson pairs in $p\bar{p}$ collisions within a double handbag approach
• A perturbative QCD approach to ${\pi }^{-}p\to D^{-}{\Lambda }_c^{+}$