Question

In scattering experiments, why can't we measure the wavepackets of the particles?

Answer 1

 John Taylor's Scattering Theory book, he says that the wave packets of the particle that enters the collision and the one of the particle that leaves the collision cannot, in practice, be uniquely identified and that is why we formulate our problem in terms of the differential cross section.


May be it is vorrect i know it is copied but it is correct i wiltell this in my language