Author/Authors :
Shiomi، نويسنده , , K. K. Baek، نويسنده , , K.Y. and Comfort، نويسنده , , David J. and Iwai، نويسنده , , E. and Kawasaki، نويسنده , , N. and Ko، نويسنده , , J.W. and Komatsubara، نويسنده , , Kathy T.K. and Lee، نويسنده , , J.W. and Lim، نويسنده , , G.Y. and Maeda، نويسنده , , Y. and Masuda، نويسنده , , T. and Naito، نويسنده , , D. and Nakaya، نويسنده , , Y. and Nanjo، نويسنده , , H. and Nomura، نويسنده , , T. and Sasaki، نويسنده , , M. and Sasao، نويسنده , , N. and ، نويسنده ,
Abstract :
We describe the K L 0 flux measurements performed at the J-PARC neutral-kaon beam line. This beam line was constructed for an experiment aiming to observe the CP-violating rare decay K L 0 → π 0 ν ν ¯ . The primary proton energy was 30 GeV and the K L 0 production angle was 16°. Prior to the physics run, the K L 0 flux and spectrum were measured by counting K L 0 → π + π − π 0 decays with a simple setup, which was composed of an electromagnetic calorimeter and a hodoscope system. Results from these measurements are presented and compared with various hadron-interaction simulations.
