Universality of {Delta}{ital I}=1 meson mixing and charge symmetry breaking
- School of Physics, University of Melbourne, Parkville, Victoria 3052 (Australia)
The Coleman-Glashow scheme for {Delta}{ital I}{sub {ital z}}=1 charge symmetry breaking (CSB) applied to meson and baryon SU(2) mass splittings suggests a universal scale. This scale can be extended to {Delta}{ital I}=1 nonstrange CSB transitions {l_angle}{rho}{sup 0}{vert_bar}{ital H}{sub em}{vert_bar}{omega}{r_angle} and {l_angle}{pi}{sup 0}{vert_bar}{ital H}{sub em}{vert_bar}{eta}{sub {ital N}{ital S}}{r_angle} of size {minus}0.005 GeV{sup 2} in the energy region 760--780 MeV. The resulting nucleon-nucleon vector meson exchange CSB potential then predicts {Delta}{ital I}=1 effects which are in approximate agreement with recent data characterizing nuclear charge asymmetry.
- OSTI ID:
- 55134
- Journal Information:
- Physical Review, C, Journal Name: Physical Review, C Journal Issue: 6 Vol. 51; ISSN PRVCAN; ISSN 0556-2813
- Country of Publication:
- United States
- Language:
- English
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