- #1
rwooduk
- 762
- 59
Apologies, this is going to be a bit disjointed, I don't want to write the full question down as I don't want anyone to give me a solution as its an assignment question.
1. am i correct in assuming when a pion decays at rest its energy will be given by:
E^2 = p^2 c^2 + m^2 c^4
which goes to:
E^2 = m^2 c^4
because I get something ridiculous like 1394J. I've canceled the c^2 of the pion mass with the c^4 in the energy eqn.
2. to find the energy of the photons i use conservation of energy:
E(pion) = E(photon1) + E(photon2)
E(photon1) = GAMMA * m c^2
i) what do i use for the mass of a photon?
ii) how do i calculate gamma when no velocity of the photons (or the pion) is given?
thanks in advance for any suggestions.
1. am i correct in assuming when a pion decays at rest its energy will be given by:
E^2 = p^2 c^2 + m^2 c^4
which goes to:
E^2 = m^2 c^4
because I get something ridiculous like 1394J. I've canceled the c^2 of the pion mass with the c^4 in the energy eqn.
2. to find the energy of the photons i use conservation of energy:
E(pion) = E(photon1) + E(photon2)
E(photon1) = GAMMA * m c^2
i) what do i use for the mass of a photon?
ii) how do i calculate gamma when no velocity of the photons (or the pion) is given?
thanks in advance for any suggestions.