Автор |
Johan Bijnens |
Автор |
Karim Ghorbani |
Дата выпуска |
2007-11-01 |
dc.description |
We calculate the decay η3π at next-to-next-to-leading order or order p<sup>6</sup> in Chiral Perturbation Theory. The corrections are somewhat larger than was indicated by dispersive estimates. We present numerical results for the Dalitz plot parameters, the ratio r of the neutral to charged decay and the total decay rate. In addition we derive an inequality between the slope parameters of the charged and neutral decay. The experimental charged decay rate leads to central values for the isospin breaking quantities R = 42.2 and Q = 23.2. |
Формат |
application.pdf |
Издатель |
Institute of Physics Publishing |
Название |
η3π at two loops in Chiral Perturbation Theory |
Тип |
paper |
DOI |
10.1088/1126-6708/2007/11/030 |
Electronic ISSN |
1029- 8479 |
Print ISSN |
1126-6708 |
Журнал |
Journal of High Energy Physics |
Том |
2007 |
Первая страница |
30 |
Последняя страница |
030 |
Аффилиация |
Johan Bijnens; Department of Theoretical Physics, Lund University, Sölvegatan 14A, S 223-62 Lund, Sweden |
Аффилиация |
Karim Ghorbani; Department of Theoretical Physics, Lund University, Sölvegatan 14A, S 223-62 Lund, Sweden |
Выпуск |
11 |