1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: Relatavistic Decay

  1. Jan 16, 2010 #1
    1. The problem statement, all variables and given/known data


    2. Relevant equations

    3. The attempt at a solution

    momentum before is gamma*pionmass*0.93c
    momentum after is gamma(u)*mass(u)*velocity(u) - E/c where E=pc which is the energy of massless particles

    energy before is gamma*pionmass*c*c
    energy after is gamma*mass(u)*c*c + pc

    just wondering if what ive done above is correct as ive tried to do it that way and i get a really ridiculous answer. Any help is appreciated

    btw the answer is (masspion)^2 + (mass(u)^2)/ 2(masspion).. anyone know how they got to that, its 110 MeV, after some extreme calculation i got 103.75 MeV but i dont know how they got it simply by doing a simple calculation as above
    Reply With Quote
  2. jcsd
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook

Can you offer guidance or do you also need help?
Draft saved Draft deleted