Wigner-Cusp in Kaon Decays and Determination of pi pi Scattering Lengths
| dc.creator | Wanke, Rainer | |
| dc.date | 2007-12-04 | |
| dc.date | 2008-06-06 | |
| dc.date.accessioned | 2026-07-07T11:54:31Z | |
| dc.date.available | 2026-07-07T11:54:31Z | |
| dc.description | In the last few years it has become possible to study low energy pi pi scattering in kaon decays to three pions, thanks to the high statistics measurement of K+- -> pi+- pi0 pi0 decays performed by the NA48/2 experiment at the CERN SPS. At the pi+ pi- threshold, the pi0 pi0 mass spectrum exhibits a Wigner-cusp, from which the S-wave pi pi scattering lengths are extracted with high precision. This measurement is complementary to the extraction of the scattering lengths from K_e4 decays, which is also performed by the NA48/2 experiment. | |
| dc.description | 10 pages, proceedings of plenary talk at MENU 2007, FZ Juelich, Sep 2007 (final version after referee's comments) | |
| dc.identifier | https://arxiv.org/abs/0712.0544 | |
| dc.identifier | http://arxiv.org/abs/0712.0544 | |
| dc.identifier | ECONFC070910:103,2007 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/204930 | |
| dc.subject | High Energy Physics - Experiment | |
| dc.title | Wigner-Cusp in Kaon Decays and Determination of pi pi Scattering Lengths | |
| dc.type | text |