Resonance Peak Width: How Does it Relate to Scattering Processes?

Safinaz
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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 .

Regards,
S.
 
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This is the breit wigner. Which is modeled by a Cauchy distribution.
 
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The observed width of any particular mass distribution is always the total width of the resinant state.
 
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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 ?
 
Then you see a very wide resonance. And take into account any hanged to the propagator.
 
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