Symmetry breaking for vector couplings

S. D. Rindani

doi:10.1103/PhysRevD.13.1992

Access by Xinjiang University

Symmetry breaking for vector couplings

S. D. Rindani

Department of Physics, Indian Institute of Technology, Bombay-400 076, India

PDF

Phys. Rev. D 13, 1992 – Published 1 April, 1976

DOI: https://doi.org/10.1103/PhysRevD.13.1992

Abstract

The decay width of about 5 keV observed for $ψ \to e \bar{e}$ implies that the SU(4) symmetry for the vector-meson-photon coupling constant $γ_{V}$ is broken, and that the quantity $γ_{V} {M_{V}}^{- \frac{1}{2}}$ (where $m_{V}$ is the mass of the vector meson $V$ ) obeys the symmetry. Using this experimental result in conjunction with vector dominance and broken SU(3), the author calculates the decay width for $ρ \to π π$ , and obtains $Γ (ρ \to π π) = 142$ MeV, in improved agreement with experiment.

References (6)

M. K. Gaillard, B. W. Lee, and J. L. Rosner, Rev. Mod. Phys. 47, 277 (1975)
A. M. Boyarski et al., Phys. Rev. Lett. 34, 1357 (1975)
D. Yennie, Phys. Rev. Lett. 34, 239 (1975)
C. E. Carlson and P. G. O. Freund, Phys. Rev. D 11, 2453 (1975)
S. H. Patil and Y. P. Yao, Phys. Rev. 153, 1455 (1967)
M. Muraskin and S. L. Glashow, Phys. Rev. 132, 484 (1963)

[c1] M. K. Gaillard, B. W. Lee, and J. L. Rosner, Rev. Mod. Phys. 47, 277 (1975)

[c2] A. M. Boyarski et al., Phys. Rev. Lett. 34, 1357 (1975)

[c3] D. Yennie, Phys. Rev. Lett. 34, 239 (1975)

[c4] C. E. Carlson and P. G. O. Freund, Phys. Rev. D 11, 2453 (1975)

[c5] S. H. Patil and Y. P. Yao, Phys. Rev. 153, 1455 (1967)

[c6] M. Muraskin and S. L. Glashow, Phys. Rev. 132, 484 (1963)

Physical Review D

Export citation

Export citation

Symmetry breaking for vector couplings

Abstract

References (6)

Outline

Information

Filter

Filter

Article Lookup

Enter a citation