On the Nucleon Distribution Amplitude: The Heterotic Solution

Abstract

We present a new nucleon distribution amplitude which amalgamates features of the Chernyak-Ogloblin-Zhitnitsky model with those of the Gari-Stefanis model. This "heterotic" solution provides the possibility to have asymptotically a small ratio \hbox{$|G_M^n|/G_M^p\le 0.1$}, while fulfilling most of the sum-rule requirements up to the third order. Using this nucleon distribution amplitude we calculate the electromagnetic and weak nucleon form factors, the transition form factor $\gamma p{\Delta }^{+}$ and the decay widths of the charmonium levels ${}^3{S}_1$, ${}^3{P}_1$, and ${}^3{P}_2$ into $p\bar{p}$. The agreement with the available data is remarkable in all cases.

15 pages, RUB-TPII-21/92 Preprint

Cited by in corpus (23)

• Perturbative QCD predictions for two-photon exchange
• Nucleon Form Factors and Distribution Amplitudes in QCD
• A Critical Analysis of the Proton Form Factor with Sudakov Suppression and Intrinsic Transverse Momentum
• Light Cone Sum Rules for gamma* N -> Delta Transition Form Factors
• Light-cone Distribution Amplitudes of the Nucleon and Negative Parity Nucleon Resonances from Lattice QCD
• Parton distribution amplitudes: revealing diquarks in the proton and Roper resonance
• Recalculation of Proton Compton Scattering in Perturbative QCD
• Soft pion theorem for hard near threshold pion production
• Measurements of the Delta(1232) Transition Form Factor and the Ratio sigma_nσ_p From Inelastic Electron-Proton and Electron-Deuteron Scattering
• Parton content of the nucleon from distribution amplitudes and transition distribution amplitudes
• Chimera distribution amplitudes for the pion and the longitudinally polarized $\rho$-meson
• Light-cone distribution amplitudes of a light baryon in large-momentum effective theory
• Mass corrections in $J/\psi \to B\bar{B}$ decay and the role of distribution amplitudes
• Lightcone and quasi distribution amplitudes for light octet and decuplet baryons
• Colour Octet Contribution in Exclusive P-Wave Charmonium Decay into Proton-Antiproton
• Intrinsic Transverse Size Effect
• Heterotic Approach to the Nucleon Distribution Amplitude
• ${}^1{P}_1$ charmonium state decay into $p\bar{p}$ in QCD models including constituent quark mass corrections
• ${\chi }_{c2}\to \rho \rho$ and the $rho$ polarization in massless perturbative QCD: how to test the distribution amplitudes
• A Study of Power Suppressed Contributions in $J/\psi \to p\bar{p}$ Decay
• On hard exclusive reactions in the time-like region
• A description of charmonia decays $J/\psi \to B\bar{B}$ within the QCD factorisation framework
• Light-cone distribution amplitudes of the nucleon and $\Delta$ baryon