Anomalous decays of mesons: surface terms against πa1-mixing
Семинары
Семинар «Теория квантового поля»
Дата и время: среда, 20 мая 2020 г., в 11:00
Место: Онлайн конференция в Zoom, Лаборатория теоретической физики им. Н.Н. Боголюбова
Тема семинара: «Anomalous decays of mesons: surface terms against πa1-mixing»
Докладчик: А. А. Осипов
Аннотация:
The amplitudes of anomalous decays of mesons are affected by mixing between members of pseudoscalar JPC=0-+ and axial-vector 1++ nonets that violates some low-energy theorems. We show that a gauge covariant procedure to diagonalize this mixing allows for consistent description of the amplitudes. The crucial role of the surface terms associated with the quark triangle diagrams is clarified.