Phenomenology of scalar and vector mesons in the linear sigma model.
Phenomenology of scalar and vector mesons in the linear sigma model.
复制标题
线性西格玛模型中标量和矢量介子的现象学。
DOI：
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发表时间：
1994
期刊：
影响因子：
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通讯作者：
Rudaz
中科院分区：
文献类型：
--
作者：
Ko;Rudaz
A generalization of the linear ensuremath{sigma} model that includes vector and axial vector mesons is presented. The resulting effective Lagrangian incorporates some new features not previously considered. The consistency of the model is successfully checked by applying it to a variety of processes, including low-energy ensuremath{pi}ensuremath{pi} scattering and ${mathit{a}}_{1}$ decays. An interesting feature of this new effective Lagrangian is that it provides a natural mechanism leading to a reduction of the ensuremath{sigma}ensuremath{
ightarrow}ensuremath{pi}ensuremath{pi} decay width relative to the expected value in the original linear ensuremath{sigma} model. The generalization of the Wess-Zumino effective action appropriate to the linear ensuremath{sigma} model is also considered.
A generalization of the linear ensuremath{sigma} model that includes vector and axial vector mesons is presented. The resulting effective Lagrangian incorporates some new features not previously considered. The consistency of the model is successfully checked by applying it to a variety of processes, including low-energy ensuremath{pi}ensuremath{pi} scattering and ${mathit{a}}_{1}$ decays. An interesting feature of this new effective Lagrangian is that it provides a natural mechanism leading to a reduction of the ensuremath{sigma}ensuremath{
ightarrow}ensuremath{pi}ensuremath{pi} decay width relative to the expected value in the original linear ensuremath{sigma} model. The generalization of the Wess-Zumino effective action appropriate to the linear ensuremath{sigma} model is also considered.