### Hard Exclusive Electroproduction of Pseudoscalar Mesons and QCD axial anomalyHard Exclusive Electroproduction of Pseudoscalar Mesons and QCD axial anomaly

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 Author Eides, Michael I. ♦ Frankfurt, Leonid L. ♦ Strikman, Mark I. Source arXiv.org Content type Text File Format PDF Date of Submission 1998-09-04 Language English
 Subject Domain (in DDC) Computer science, information & general works ♦ Natural sciences & mathematics ♦ Physics Subject Keyword High Energy Physics - Phenomenology ♦ physics:hep-ph Abstract The hard exclusive electroproduction of $\pi^0,\eta,\eta'$ mesons by the longitudinal photons is considered. We calculate the ratios of the $\pi^0 : \eta : \eta'$ yields for the electroproduction processes off nucleons and deuterons based on the QCD factorization theorem, the low energy QCD chiral dynamics, and the QCD anomaly. Thus investigation of these ratios gives a new way to probe the physics of the spontaneous chiral symmetry breaking. Description Reference: Phys. Rev. D 59, 114025 (1999) Educational Use Research Learning Resource Type Article Page Count 14