pi meson merging in rowe meson

[hoola]

I was watching Suskind (string theory and M theory, lesson one) describing a Feynman diagram of the collision of two pi mesons into a Rowe meson, then a quick decay back into two pi mesons. Then he described a single pi meson changing into a Rowe meson with another quick return to the single pi meson. He went on further to explain the math describing the second reaction was not a lower-equivalent of the first to the degree one would have expected. If this is a correct interpretation of the lesson, does that indicate the 2 pi mesons of the first experiment merge and become a single "double" Rowe meson? How does this square with the uncertainly principle against two particles in the same space?

Edited February 9, 2015 by hoola

[Mordred]

Becomes a single rho meson.

 

Mesons have integer spin, they are bosonic and bosons do not follow the Pauli exclusion principle. Any number of bosons can occupy the same space.

[hoola]

thank you mordred.