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Homework Help: Restmass, lifetime of a meson

  1. Mar 13, 2008 #1
    [SOLVED] Restmass, lifetime of a meson

    1. The problem statement, all variables and given/known data

    A [tex]\rho[/tex] meson is a highly unstable subatomic particle with a rest mass of 776 MeV/c^2 and a mean lifetime of [tex]4\times10^{-24}[/tex]s. What is the minimum uncertainty in the meson's energy?

    2. Relevant equations

    We know that rest energy of a particle E = mc^2, m being rest mass I'm assuming.

    3. The attempt at a solution

    I don't even know where to begin. I'm not sure what they're asking, and what it is I need to calculate.
  2. jcsd
  3. Mar 13, 2008 #2

    Doc Al

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    Staff: Mentor

    I suspect that they want you to apply the so-called energy-time uncertainty principle. Look it up!
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