Partial widths of a multi-channel resonance
Семинары
Семинар «Малочастичные системы»
Дата и время: вторник, 26 сентября 2017 г., в 11:00
Место: Конференц-зал (2-й этаж), Лаборатория теоретической физики им. Н.Н. Боголюбова
Тема семинара: «Partial widths of a multi-channel resonance»
Докладчик: Ракитянский Сергей Алексеевич (Университет Претории, ЮАР)
Аннотация:
It is suggested a method for finding the partial decay-widths for multi-channel resonances. The method is based on using the Jost matrices. These matrices can be either calculated (when the multi-channel potential is known) or found by fitting experimental data (when they are available). In both cases the procedure for obtaining the partial widths is the same and does not require any kind of integration or differentiation. The partial widths sum up to the total width and the corresponding branching ratios can be found as some algebraic combinations of the elements of the Jost matrices.