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Prediction of Half Lives

  1. Mar 22, 2014 #1
    How can we theoretically predict half lives?
  2. jcsd
  3. Mar 22, 2014 #2


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    Gold Member

    It depends on the width of a resonance's peak....
    If the width is [itex]Γ[/itex] then you can associate the resonance's lifetime by:
    So in general, to find the width you need to find the cross section as a function of energies... eg Breit Wigner cross section distribution...

    In another way, you can calculate the time needed for a part of your particle to leave the potential via a tunneling - for example an alpha particle leaving a heavy nuclei in the potential of strong+coulomb interaction...
    Last edited: Mar 22, 2014
  4. Mar 22, 2014 #3
    Thanks for your reply. I am new to particle physics. Can you suggest any good book for a beginner?
  5. Mar 22, 2014 #4


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    Science Advisor

    Check out the books listed in this thread.
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