Mending ρππ vertex through the πa1 diagonalization
Семинары
Семинар «Физика адронов»
Дата и время: пятница, 22 декабря 2017 г., в 11:00
Место: Конференц-зал им. Блохинцева (4-й этаж), Лаборатория теоретической физики им. Н.Н. Боголюбова
Тема семинара: «Mending ρππ vertex through the πa1 diagonalization»
Докладчик: А. А. Осипов
Аннотация:
The problem of the strong momentum dependence of the ρππ-vertex in the extended Nambu–Jona-Lasinio model is solved by an appropriate choice of fields for spin-1 particles. A corresponding phenomenological Lagrangian is derived. As straightforward applications, the decay widths of ρ → ππ, and a1 → ρπ transitions are calculated and compared with known phenomenological data and previous theoretical estimates.