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Robsta
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Homework Statement
I've got a given Breit Wigner curve of the number of decays at given energies.
I've been told by several sources that the width (FWHM) of the curve gives the rate of the reaction.
I can't see however how an energy here actually translates into a rate.
Homework Equations
I understand that from the uncertainty principle $$ \Delta E \Delta t = \hbar $$ and therefore $$ \frac{\Delta E}{\hbar} = \Delta t $$ but to what does delta t refer? It seems to me like an uncertainty in the lifetime which is of course not what I'm after.
How would I find the actual lifetime rather than the error in the lifetime?
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