Decays of Non-Strange Positive Parity Excited Baryons in the 1/Nc Expansion

Details Decays of Non-Strange Positive Parity Excited Baryons in the 1/Nc Expansion Decays of Non-Strange Positive Parity Excited Baryons in the 1/Nc Expansion

2005-04-13

arxiv.org/abs/hep-ph/0504101v1

Phys.Rev. D72 (2005) 034024

Physics

High Energy Physics

High Energy Physics - Phenomenology

16 pages, 8 tables

Scientific paper

10.1103/PhysRevD.72.034024

The decays of non-strange positive parity excited baryons via emission of a pseudo-scalar meson are studied in the framework of the 1/Nc expansion to order 1/Nc. In particular, the pionic decays of the l=0 Roper baryons and of the l=2 baryons in the mass interval 1680-1950 MeV are analyzed using the available partial decay widths. Decay widths by emission of an eta meson are shown to be suppressed by a factor 1/Nc^2 with respect to the pionic ones.

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