Diquark substructure in φ photoproduction

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Abstract

Observed enhancements in the forward and backward directions for φ-meson photoproduction off nucleons are shown to be explainable by the production of a nonresonant recoiling (su) diquark, (s¯ud) triquark pair. We show that the necessity of maintaining approximate collinearity of the quarks within these units constrains configurations with the minimum momentum transfer, and hence maximal amplitudes, to lie preferentially along the reaction axis.

Original languageEnglish (US)
Article number114006
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume92
Issue number11
DOIs
StatePublished - Dec 1 2015

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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