https://doi.org/10.1051/epjconf/201921202008
Methods of parameterization of amplitudes and extraction of resonances, D-decay amplitudes
Institute of Nuclear Physics PAS, Radzikowskiego 152, Kraków
* e-mail: robert.kaminski@ifj.edu.pl
Published online: 17 June 2019
Amplitudes used for analyses of two-body interactions very often are not unitary therefore can not guarantee correct results. It is, however, quite easy to construct unitary amplitude or check whether given amplitude fulfills unitarity condition. Only few conditions must be fulfilled to guarantee unitarity. Presently, when in many data analyses very small, overlapping or broad signals are studied, non-unitary effects can significantly influence results and lead to nonphysical interpretation of obtained parameters.
© The Authors, published by EDP Sciences, 2019
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