Effects of symmetry breaking on the strong and electroweak interactions of the vector nonet
- Department of Physics, Syracuse University, Syracuse, New York 13244-1130 (United States)
Starting from a chiral-invariant and quark-line-rule-conserving Lagrangian of pseudoscalar and vector nonets we introduce first- and second-order symmetry breaking as well as quark-line-rule-violating terms and fit the parameters, at the tree level, to many strong and electroweak processes. A number of predictions are made. The electroweak interactions are included in a manifestly gauge-invariant manner. The resulting symmetry-breaking pattern is discussed in detail. Specifically, for the {open_quote}{open_quote}strong{close_quote}{close_quote} interactions, we study all the vector meson masses and {ital V}{r_arrow}{phi}{phi} decays, including isotopic spin violations. In the electroweak sector we study the {l_brace}{rho}{sup 0},{omega},{phi}{r_brace}{r_arrow}{ital e}{sup +}{ital e}{sup {minus}} decays, {l_brace}{pi}{sup +},{ital K}{sup +},{ital K}{sup 0}{r_brace} {open_quote}{open_quote}charge radii,{close_quote}{close_quote} {ital K}{sub {ital l}3} {open_quote}{open_quote}slope factor,{close_quote}{close_quote} and the overall {ital e}{sup +}{ital e}{sup {minus}}{r_arrow}{pi}{sup +}{pi}{sup {minus}} process. It is hoped that the resulting model may be useful as a reasonable description of low energy physics in the range up to about 1 GeV. {copyright} {ital 1996 The American Physical Society.}
- Research Organization:
- Syracuse University
- DOE Contract Number:
- FG02-85ER40231
- OSTI ID:
- 383394
- Journal Information:
- Physical Review, D, Journal Name: Physical Review, D Journal Issue: 5 Vol. 54; ISSN PRVDAQ; ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
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