论文标题
时间样的电磁kaon形式
The time-like electromagnetic kaon form factor
论文作者
论文摘要
我们通过使用伯特 - 盐盐方程的庞加莱协变形式，在时间样区域计算电磁电荷的kaon外形，以研究夸克 - 静quark的状态，并与schwinger-dyson方程一起研究夸克宣传者。在最近对时间样电磁锥形外形的计算之后，我们包括其量子数中允许的最相关的中间复合颗粒在相互作用核中允许的量子数，以允许涉及共振的衰减机制。该术语增强了通常的Gluon介导的夸克之间的相互作用。对于足够低的能量时间探测光子，电磁形件因子被$ρ（770）$和$ ϕ（1020）$共振饱和。我们假设$ su（2）$ isospin对称性。我们的绝对值平方的结果平方是电磁形构想在定性上相当良好和定量中适中同意的结果。
We compute the electromagnetic charged kaon form factor in the time-like region by employing a Poincaré covariant formalism of the Bethe-Salpeter equation to study quark-antiquark bound states in conjunction with the Schwinger-Dyson equation for the quark propagator. Following a recent kindred calculation of the time-like electromagnetic pion form factor, we include the most relevant intermediate composite particles permitted by their quantum numbers in the interaction kernel to allow for a decay mechanism for the resonances involved. This term augments the usual gluon mediated interaction between quarks. For a sufficiently low energy time-like probing photon, the electromagnetic form factor is saturated by the $ρ(770)$ and $ϕ(1020)$ resonances. We assume $SU(2)$ isospin symmetry throughout. Our results for the absolute value squared of the electromagnetic form factor agree qualitatively rather well and quantitatively moderately so with available experimental data.
