Regge Spectral Generator and Form Factors from Hard Exclusive Amplitudes in Holographic QCD.

Authors

Guy F de Téramond, Stanley J Brodsky, Hans Günter Dosch

Published in

Physical review letters. Volume 137. Issue 11. Pages 111903. Sep 11, 2026.

Abstract

We show that the infinite tower of hard exclusive amplitudes in holographic light-front QCD leads to a spectral generator G(α,λ) that encodes the full Regge spectrum. The construction assumes a Poisson distribution of Fock-state components, where λ represents the average parton multiplicity above the valence configuration. The resulting generator yields a Regge spectrum invariant under continuous λ deformations. Its even- and odd-twist projections yield the meson and baryon form factors with a single value of λ, fixed by the pion charge radius, which in turn determines the full Q^{2} dependence. The constituent counting rules for both sectors follow from the structure of the spectral generator, which also provides a compact analytic representation of parton distributions.

PMID:
42789889
Bibliographic data and abstract were imported from PubMed on 26 Sep 2026.

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