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The Voigt profile is one of the most used special function in opticalspectroscopy. In particle physics a version of this profile which originatesfrom relativistic Breit-Wigner resonance distribution often appears, however,in the literature there is no strict derivation of its properties. The purposeof this paper is to define properly relativistic Voigt profile and describe italong the same way as their standard nonrelativistic counterparts.

Relativistic Voigt profile for unstable particles in high energy physics