Natural Explanation of Recent Results on e+e- → λλ¯
A. I Mil'shteyn, S. G. Salnikov · Письма в Журнал экспериментальной и теоретической физики · 2023
We show that the recent experimental data on the cross section of the process e+e- ΛΛ¯ near the threshold can be perfectly explained by the final-state interaction of Λ and Λ¯. The enhancement of the cross section is related to the existence of low-energy real or virtual state in the corresponding potential. We present a simple analytical formula that fits the experimental data very well.