The "first" KK pair has some S-wave

[admorris]

If we were considering Bs→(K⁺K⁻)(K⁺K⁻), then each component with non-identical intermediate daughters would have to be there twice, with equal physics parameters and equal fractions.

Each component should have

• KK 1 name
• KK 2 name
• fraction name (AB same as BA)
• amplitude name (AB same as BA)