Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Axion decay width

  1. Jul 14, 2009 #1
    I would like to know the frequency width of a decaying axion
    Lets say the axion has a mass of 10^-6 eV and it decays via the primakoff effect within a B field into one photon. Because there is only one photon in the final state I would assume that the photon frequency is quite narrow but what actually defines the width of the signal?
    Last edited: Jul 14, 2009
  2. jcsd
  3. Jul 14, 2009 #2
    Spectrum of incoming axions, I think? Primakoff effect is just a fancy name for scattering, a+Z -> gamma+Z. Final frequency should be exactly computable if we know initial energy and scattering angle, simply using conservation of energy & momentum (since all particles are stable).
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook