Dispersive representation of K -> 3 pi amplitudes and cusps
- Autor(en)
- K Kampf, M Knecht, J Novotný, Martin Zdrahal
- Abstrakt
The NA48/2 collaboration has shown clear experimental evidence for a cusp in the data for K -> pi pi^0 pi^0. This effect can be used to extract information on the pi-pi scattering lengths. We address this issue using a two-loop dispersive construction of pi pi -> pi pi and K -> pi pi pi amplitudes in the presence of isospin breaking.
- Organisation(en)
- Teilchenphysik
- Externe Organisation(en)
- Paul Scherrer Institute, Charles University Prague, Aix-Marseille Université
- Seiten
- 334-337
- Anzahl der Seiten
- 4
- Publikationsdatum
- 2009
- ÖFOS 2012
- 1030 Physik, Astronomie
- Link zum Portal
- https://ucrisportal.univie.ac.at/de/publications/dispersive-representation-of-k--3-pi-amplitudes-and-cusps(3fe3a1be-a199-47a8-b783-78a4d07c4b68).html