Author/Authors :
Burnstein، نويسنده , , R.A. and Chakravorty، نويسنده , , A. and Chan، نويسنده , , A. and Chen، نويسنده , , Y.C. and Choong، نويسنده , , W.-S. and Clark، نويسنده , , Justin K. and Dukes، نويسنده , , E.C. and Durandet، نويسنده , , C. and Felix، نويسنده , , J. and Fuzesy، نويسنده , , R. and Gidal، نويسنده , , G. and Gu، نويسنده , , P. and Gustafson، نويسنده , , H.R. and Ho، نويسنده , , C. and Holmstrom، نويسنده , , T. and Huang، نويسنده , , M. and James، نويسنده ,
Abstract :
The HyperCP experiment (Fermilab E871) was designed to search for rare phenomena in the decays of charged strange particles, in particular CP violation in Ξ and Λ hyperon decays with a sensitivity of 10 - 4 . Intense charged secondary beams were produced by 800 GeV/c protons and momentum selected by a magnetic channel. Decay products were detected in a large-acceptance, high-rate magnetic spectrometer using multiwire proportional chambers, trigger hodoscopes, a hadronic calorimeter, and a muon-detection system. Nearly identical acceptances and efficiencies for hyperons and antihyperons decaying within an evacuated volume were achieved by reversing the polarities of the channel and spectrometer magnets. A high-rate data-acquisition system enabled 231 billion events to be recorded in 12 months of data-taking.
Keywords :
Fermilab , Hyperon CP violation , Magnetic spectrometer , HyperCP , Rare hyperon and kaon decays , Hadronic calorimeter
