Equation Name & Description: What Is It?

[resurgance2001]

Could someone tell me what the attached equation is called, and just and brief description of what it states. I don't recognise it and it's hard to know where one goes to just look up an equation.

Thanks

 

[DrClaude]

That's the differetial cross section being equal to the absolute value squared of the scattering amplitude. Look up "quantum scattering".

 

[resurgance2001]

That's the differetial cross section being equal to the absolute value squared of the scattering amplitude. Look up "quantum scattering".

Thanks - yes I thought it might have something to do with that.