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Homework Help: The lifetime of particles

  1. Jul 2, 2010 #1
    1. The problem statement, all variables and given/known data

    The Y Meson has a rest mass of 9.6 GeV/c2 and a measured width of (Delta)E= 51keV. What is its approximate lifetime (delta)t?

    2. Relevant equations

    And.. who knows?

    3. The attempt at a solution

    We came to the conclusion that 9.6 GeV/c2 was related to E=MC2.. and we pretty much had no idea with the measured width of (Delta)E= 51keV ( we thought it might be related to electric fields though).
  2. jcsd
  3. Jul 3, 2010 #2
    (Note: Planck's Reduced constant = 1.055x10^-34 and 1 ev = 1.6x10^-19 J)

    The question gives you that information
  4. Jul 3, 2010 #3


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