Pion electroproduction amplitude relations in the 1/Nc expansion

Richard Lebed, Lang Yu

Research output: Contribution to journalArticle

1 Scopus citations

Abstract

We derive expressions for pion electroproduction amplitudes in the 1/Nc expansion of QCD, and obtain from them linear relations between the electromagnetic multipole amplitudes that hold at all energies. The leading-order relations in 1/Nc compare favorably with available data (especially away from resonances), but the next-to-leading-order relations tend to provide only small or no improvement.

Original languageEnglish (US)
Article number076006
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume80
Issue number7
DOIs
StatePublished - Oct 16 2009

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Physics and Astronomy (miscellaneous)

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