出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：The KOTO experiment aims to discover the decay K0 L →p0nn¯ at the J-PARC 30 GeV proton synchrotron. Because its theoretical uncertainty is small, this decay mode is a powerful tool to measure SM parameters and search for new physics beyond the SM. In order to achieve the SM level sensitivity, a high intensity K0 L beam is required. We constructed a new K0 L beam line at J-PARC by summer 2009 and carried out a beam survey experiment from November 2009 to February 2010. In this experiment, we measured the K0 L yield with hodoscopes and small size electro-magnetic calorimeters. We report the techniques and results of the measurement.
