论文标题
半雌性衰变的理论分析$η^{（\ prime）} \toπ^0l^+l^ - $ and $η^\ prime \ toηl^+l^ - $
A theoretical analysis of the semileptonic decays $η^{(\prime)}\toπ^0l^+l^-$ and $η^\prime\toηl^+l^-$
论文作者
论文摘要
对$ c $ co $ co $ co $ semileptonic的完整分析衰减$η^{（\ prime）} \toπ^0l^+l^ - $ and $η^\ prime \ toηl^+l^ - $（$ l = e $ $或$ u $ $）在Vector Meson onerance（vmed）的框架内。现有的现象学模型用于参数化VMD耦合常数，相关的数值值是从优化拟合到$ v \ topγ$和$ p \ tovγ$辐射衰减的（$ v =ρ^0 $，$ f = p =ρ^0 $，$ω$，$ ϕ $和$ p = p =π^0 $，$，$，$，$，$，PRIPER）的PRIPE比较了使用这种方法获得的两个$η\toπ^0l^+l^ - $过程的衰减宽度和DILEPTON能量光谱，并发现与已发表的文献中可获得的其他结果非常吻合。计算并在这项工作中首次计算了四个$η^{\ prime} \toπ^0l^+l^ - $和$η^+prime \toηl^+l^ - $ nl^+l^+l^ - $η^+prime \ prime \ prime \ prime \ prime \ prime \ prime \ prime \ prime \ to的理论预测。
A complete theoretical analysis of the $C$-conserving semileptonic decays $η^{(\prime)}\toπ^0l^+l^-$ and $η^\prime\toηl^+l^-$ ($l=e$ or $μ$) is carried out within the framework of the Vector Meson Dominance (VMD) model. An existing phenomenological model is used to parametrise the VMD coupling constants and the associated numerical values are obtained from an optimisation fit to $V\to Pγ$ and $P\to Vγ$ radiative decays ($V=ρ^0$, $ω$, $ϕ$ and $P=π^0$, $η$, $η^{\prime}$). The decay widths and dilepton energy spectra for the two $η\toπ^0l^+l^-$ processes obtained using this approach are compared and found to be in good agreement with other results available in the published literature. Theoretical predictions for the four $η^{\prime}\toπ^0l^+l^-$ and $η^\prime\toηl^+l^-$ decay widths and dilepton energy spectra are calculated and presented for the first time in this work.
