How to Calculate Scattering Amplitude in the Born Approximation?

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SUMMARY

The discussion focuses on calculating the scattering amplitude in the Born approximation, specifically using the formula f(θ) = (-2m / (h/2π)² K) * ∫₀^∞ (r sin Kr V(r) dr) with V(r) = -V₀ exp(-r²/2a²). The resulting expression for f(θ) simplifies to f(θ) = (-mV₀a³√π / 2(h/2π)) * exp(-k²a²sin²θ/2). Additionally, the differential cross-section is derived as dσ/dΩ = |f(θ)|², leading to dσ/dΩ = ((-mV₀a³√π / 2(h/2π))² * exp(-k²a²sin²θ)). The discussion highlights the need for clarity in notation and intermediate calculations to avoid ambiguities.

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  • Understanding of quantum mechanics principles, particularly scattering theory.
  • Familiarity with the Born approximation in quantum scattering.
  • Knowledge of integral calculus, specifically in evaluating definite integrals.
  • Proficiency in using mathematical notation and symbols accurately.
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  • Review the derivation of the Born approximation in quantum mechanics.
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This discussion is beneficial for physicists, graduate students in quantum mechanics, and researchers involved in scattering theory and particle physics who require a clear understanding of the Born approximation and its calculations.

wgdtelr
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The scattering amplitude in the Born approximation is as
f(θ) = (-2m / (h/2π )2 K ) * integral 0 to ∞ (r sin Kr V(r) dr)

Substituting V (r) = -V0 exp(-r2/2a2)

We get f(θ) = (-mVoa3√π / 2(h/2π) ) * exp (-k2a2sin2θ/2 )

Differential crossection dσ / dΩ = / f(θ) /^2

= (-mVoa3√π / 2(h/2π) )2 * exp (-2k2a2sin2θ/2 )

can u please give the intermediate calculations.
 
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First of all show us what you have tried so far. What you've shown so far is full of ambiguities making it impossible to do an accurate calculation. For example the 2K in your first equation is it a part of the denominator or a part of the numerator. If you would type it into your calculator it would be part of the numerator, but for some reason many people think it's supposed to be part of the denominator. Next up I take r2 is r^2 and not 2r? etc.

I could do the intermediate calculations, but what is the point, besides it being against forum regulations. Where are you stuck? We can take it from there.
 

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