论文标题
阐明Rho-Meson作为时间样电磁锥形外形中的中间共振的作用
Elucidating the rho-meson's role as intermediate resonance in the time-like electromagnetic pion form factor
论文作者
论文摘要
由时间样电磁质子形式的计划测量的动机，对时间样电磁锥形形式的探索性研究在形式主义中提出，该研究形式主义将介子描述为Poincaré-dismons-dismons-dismonsismiss。在各自的夸克相互作用内核中，除了速率型夸克的Gluon交互相互作用之外，还包括允许培养型以自吻的方式逐渐回到夸克中来包括非价效应。因此，主要的$ρ$衰减通道的打开，$ρ\至ππ$，以及在两杆阈值被交叉时的多粒子分支切割的存在，首先包括在相应计算的Quark-Photon顶点中，然后在时间类似的Quark-Photon顶点中，然后在时光般的电子模型中。获得的结果与可用的实验数据一致，并提供了进一步的证据证明矢量 - 梅森优势模型的功效。讨论了超越此处使用的同胞对称限制的影响。最后但并非最不重要的一点是，如何将如何包括在Poincaré-Covariant Faddeev中接近中间共振在计算BARYON特性中的影响。
Motivated by the planned measurements of the time-like electromagnetic proton form factors an exploratory study of the time-like electromagnetic pion form factor is presented in a formalism which describes mesons as Poincaré-invariant bound states. In the respective quark interaction kernel, beyond the gluon-intermediated interactions for valence-type quarks, non-valence effects are included by allowing the pions to couple back in a self-consistent manner to the quarks. Consequently, the opening of the dominant $ρ$ decay channel, $ρ\to ππ$, and the presence of a multi-particle branch cut, setting in when the two-pion threshold is crossed, are included consistently, first in the correspondingly calculated quark-photon vertex, and then consequently in the time-like electromagnetic pion form factor. The obtained results are in agreement with the available experimental data and provide further evidence for the efficacy of a vector-meson dominance model. Effects of going beyond the here employed isospin-symmetric limit are discussed. Last but not least, an outlook is provided on how to include in Poincaré-covariant Faddeev approaches the effects of intermediate resonances in the calculation of baryon properties.
