I think I understand that the particles must be going in opposite directions, and that their lowest speed will be when both directions are perpendicular to the direction of motion of the decaying meson. When the directions of motion are parallel to the decaying particle's motion, one pi has to...
I've just started an introductory modern physics course, and it's making me ache a bit. I'm unsure about this problem:
So, if I calculate the momentum of the two pi mesons in the rest frame of the decaying meson... well... I've gotten that far. I'm not sure if I need to transform the...