Quadrupole moments of N and Δ in the 1/Nc expansion

Alfons J. Buchmann, Janice A. Hester, Richard Lebed

Research output: Contribution to journalArticlepeer-review

61 Scopus citations

Abstract

We calculate expressions for the quadrupole moments of nonstrange baryons in which the number of QCD color charges is Nc. Using only the assumption of single-photon exchange, we obtain 4 relations among the 6 moments, and show how all of them may be obtained from QΔ+p up to O(1/Nc2) corrections. We compare to the Nc=3 case, and obtain relations between the neutron charge radius and quadrupole moments. We also discuss prospects for the measurement of these moments.

Original languageEnglish (US)
Article number056002
JournalPhysical Review D
Volume66
Issue number5
DOIs
StatePublished - 2002

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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