Recent Results from NA48/2 Experiment at CERN-SPS

Simone Bifani
2007 AIP Conference Proceedings  
Preliminary results of the measurement of charged CP violating asymmetry A g = g + −g − g + +g − in both 3π decay modes, based on the whole accumulated statistics in 2003 and 2004, are presented. A new unexpected anomaly in the 2π 0 mass subsystem spectrum in K ± → π ± π 0 π 0 decay, so called "cusp", due to charge exchange re-scattering process (π + π − → π 0 π 0 ) is discussed. A preliminary result indicates the observation of direct emission amplitude and first observation of an interference
more » ... of an interference term in the non-leptonic radiative rare decay K ± → π ± π 0 γ is presented.
doi:10.1063/1.2751973 fatcat:pigrfixuzzgfhpdcqngfbivdja