Decays of nonstrange positive parity excited baryons in the 1/N{sub c} expansion

Journal Article · Mon Aug 01 04:00:00 EDT 2005 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PhysRevD.72.034024· OSTI ID:20711232

Goity, J L ^[1]; Scoccola, N N ^[2]

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1. Department of Physics, Hampton University, Hampton, Virginia 23668 (United States)
2. Physics Department, Comision Nacional de Energia Atomica (1429) Buenos Aires (Argentina)

The decays of nonstrange positive parity excited baryons via emission of a pseudoscalar meson are studied in the framework of the 1/N{sub c} expansion to order 1/N{sub c}. 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/N{sub c}{sup 2} with respect to the pionic ones.

• OSTI ID: 20711232
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 3 Vol. 72; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BARYONS
ETA MESONS
HADRONIC PARTICLE DECAY
MASS FORMULAE
MEV RANGE
PARITY
PARTICLE PRODUCTION
PARTICLE WIDTHS
RESONANCE PARTICLES
REST MASS