论文标题
在NJL模型中固定矢量耦合常数$g_ρ= 5.0 $和最终状态相互作用，$ρ\ to e^+e^ - [μ^+μ^ - ] $，$ρ\toπ^+π^ - $，$，$，$τ\ for
Fixing the vector coupling constant $g_ρ= 5.0$ in the NJL model and final-state interactions in processes $ρ\to e^+e^-[μ^+μ^-]$, $ρ\to π^+π^-$, $τ\to π^-π^0ν_τ$, and $e^+e^-\toπ^+π^-$
论文作者
论文摘要
讨论了$ su（2）\ times su（2）$ chiral-Memmetric Nambu-Jona-lasinio模型的衰减$ρ\ to e^{+} e^{ - } $的宽度。结果表明，对于一致的同时说明，对$ρ\ to e^{+} e^{ - } $，$ρ\ toπ^{+}π^{ - } $，$τ^{ - } $，$τ^{ - }可以构造π^{+}π^{ - } $。考虑到最终状态下培养的相互作用似乎很重要。所考虑的过程获得的理论结果与实验数据达成了令人满意的一致性。
The possibility to use the width of the decay $ρ\to e^{+}e^{-}$ to fix the input parameter $g_ρ=5.0$ of the $SU(2) \times SU(2)$ chiral-symmetric Nambu--Jona-Lasinio model is discussed. It is shown that for a consistent simultaneous description of the processes $ρ\to e^{+}e^{-}$, $ρ\to π^{+}π^{-}$, $τ^{-} \to π^{-}π^{0} ν_τ$, and $e^{+}e^{-} \to π^{+}π^{-}$ can be constructed. Taking into account the interaction of pions in the final state appears to be important. The obtained theoretical results for the considered processes are in a satisfactory agreement with experimental data.
