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Spectral representation for baryon to meson transition distribution amplitudes
Phys. Rev. D 82, 094030 – Published 29 November, 2010
DOI: https://doi.org/10.1103/PhysRevD.82.094030
Abstract
We construct a spectral representation for the baron to meson transition distribution amplitudes (TDAs), i.e. matrix elements involving three quark correlators which arise in the description of baryon to meson transitions within the factorization approach to hard exclusive reactions. We generalize for these quantities the notion of double distributions introduced in the context of generalized parton distributions. We propose the generalization of Radyushkin’s factorized ansatz for the case of baryon to meson TDAs. Our construction opens the way to modeling of baryon to meson TDAs in their complete domain of definition and quantitative estimates of cross sections for various hard exclusive reactions.
Article Text
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