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Article overview
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A spectral representation for baryon to meson and baryon to photon transition distribution amplitudes | Bernard Pire
; Kirill Semenov-Tian-Shansky
; Lech Szymanowski
; | Date: |
4 Aug 2010 | Abstract: | We construct a spectral representation for the transition distribution
amplitudes (TDAs), i.e. matrix elements of three quark correlators which arise
e.g. in the description of baryon to meson and baryon to photon 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
A.Radyushkin’s factorized Ansatz for the case of baryon to meson and baryon to
photon TDAs. Our construction opens the way to modeling of baryon to meson and
baryon to photon TDAs in their complete domain of definition and quantitative
estimates of cross-sections for various hard exclusive reactions. | Source: | arXiv, 1008.0721 | Services: | Forum | Review | PDF | Favorites |
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