Recent content by Dhmht_Kr

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    Question related to completeness relation for photons

    Hi Would you explain to me what is the q^ and how they are related to completeness.How can i solve this exercise?It is from "Quarks and leptons An Introductory course in Modern Particle Physics" of Halzen and Alan D.Martin.Also, can you point me to a useful bibliography?
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    I Compton scattering amplitude and propagator

    Hi everyone How can i prove that the propagator is And then
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    I Equation which is related with the Lorentz invariant quantities

    Hi every one.How can i prove the below equation? And then that it's Lorentz invariant quantitude ? Thanks for your help
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    I Higgs decay to Z and Z* at LHC

    Goodmornig.I would like to explain me What is the Z* at higgs decay and why it has different mass from Z ?
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