The $$\pi \pi \to {\text{K}}\overline {\text{K}} $$ % MathType!End!2!1! amplitude in the unphysical regionamplitude in the unphysical region
Keyword(s):
Keyword(s):
1996 ◽
Vol 70
(3)
◽
pp. 473-481
◽
1969 ◽
Vol 221
(2)
◽
pp. 134-140
◽