562outg_lesb3.rar

: This beamline was essential for the E787 and E949 experiments , which sought physics beyond the Standard Model by measuring extremely rare decays with high precision.

decay is so rare (predicted at roughly 1 in 10 billion) that observing it provides an incredibly clean "test" of the Standard Model; any deviation could signal . 562outg_lesb3.rar

* E787 Phase 1 Detector: General: NIM A321(1992)129 , NIM A321(1992)129 (local copy, html version) , KEK Library Scanned Version , Brookhaven National Laboratory (.gov) : This beamline was essential for the E787

: Compared to its predecessor (LESB1), it achieved a 2.5x increase in kaon intensity and reduced pion contamination by a factor of 10. : It utilized a two-stage separation process and

: It utilized a two-stage separation process and innovative "movable jaws" to reject unwanted particles (contamination) more effectively.