Methods of parameterization of amplitudes and extraction of resonances
Семинары
Семинар «Физика адронов»
Дата и время: пятница, 28 июня 2019 г., в 11:00
Место: Конференц-зал им. Блохинцева (4-й этаж), Лаборатория теоретической физики им. Н.Н. Боголюбова
Тема семинара: «Methods of parameterization of amplitudes and extraction of resonances»
Докладчик: Р. Камински (ЛТФ ОИЯИ и ИЯФ (г. Краков))
Аннотация:
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. In the presentation will be shown how one can extract information about resonances from amplitudes and what pitfalls are waiting for us.