The 7/11 rule: An estimate of m<inf>ρ</inf>/f<inf>π</inf>

Maarten F.L. Golterman, Santiago Peris

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48 Citations (Scopus)


We derive an estimate for the ratio of the rho mass and the pion decay constant from an analysis of vector and axial-vector two-point functions using large-Nc, lowest-meson dominance, and operator product expansion, in the chiral limit. We discuss the extension of this analysis to the scalar and pseudoscalar sector. Furthermore, this leads to a successful parameter-free determination of the Li couplings of the chiral Lagrangian if an improved Nambu-Jona-Lasinio ansatz for Green functions is assumed at low energies. ©2000 The American Physical Society.
Original languageEnglish
Article number034018
Pages (from-to)1-7
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Issue number3
Publication statusPublished - 1 Feb 2000

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