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Width of the resonance peak

  1. Nov 22, 2013 #1
    Hi all,

    I'd like to know what if we have a scatteing process A+B > C > E+D,
    what is the relation between the width of the resonance peak of the particle C at
    plotting the inv. mass of particles E and D and the total width of C .

  2. jcsd
  3. Nov 22, 2013 #2
    This is the breit wigner. Which is modelled by a Cauchy distribution.
  4. Nov 22, 2013 #3

    Meir Achuz

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    The observed width of any particular mass distribution is always the total width of the resinant state.
  5. Dec 9, 2013 #4
    How, if the total width of the intermediate particle for example = 2 GeV, the observed width will be 2 cm ..
    what if the resinant particle is heavy and has a large total width, like 600 GeV ?
  6. Dec 9, 2013 #5
    Then you see a very wide resonance. And take into account any hanged to the propagator.
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