Please ignore display cursors, they weren't intended to be there. Argghhh.

Decay Particle coincidence examples
1-Tgt-Shaped
2-Delay Trigger
3-Tgt-Shaped DIR-OUT

ex.1 Classic Case - Pion to decay particle.

ex.2 Pion to mu to e.

ex.3 Pion to decay particle short but detected.

ex.4 Pion to decay particle short not detected.