blah u sure?
consider the following senario:
a pi ion is moving at a certain velocity K and another pi ion is at rest at lab frame. consider the minimum amt of velocity K for the creation of another Pi ion.
and method, i'll type the theory here. not too good at the maths yet. still learning.
consider the pi ion and the other pi ion to be moving at the same speed to each other. (aka take the center of mass frame)
now let those 2 fellows collide, momentum=0 when they hit.
with the loss of kinetic energy, the energy is converted totally into the new pi ion.
since ur ke=1/2 mv2, now u can solve for v in the com frame.
using the same v, bring it out using relativity, which i dnu wanna type out cause its damn long.
and u get the speed of the pi ion at the lab frame. and tat speed is ur minimum K
fun?:bsmilie: