Bulletin of the American Physical Society
APS April Meeting 2019
Volume 64, Number 3
Saturday–Tuesday, April 13–16, 2019; Denver, Colorado
Session C12: Undergraduate Research II
1:30 PM–3:18 PM,
Saturday, April 13, 2019
Sheraton
Room: Plaza Court 1
Sponsoring
Units:
APS SPS
Chair: Crystal Bailey, American Physical Society
Abstract: C12.00008 : Study of the KL0 → KS0 Regeneration Process with the KOTO Detector*
2:54 PM–3:06 PM
View Presentation Abstract
Presenter:
Kristin Marie Dona
(University of Michigan)
Author:
Kristin Marie Dona
(University of Michigan)
The KOTO experiment at the J-PARC research facility in Tokai, Japan is designed to measure the branching ratio of a neutral kaon (KL 0) decaying into a neutral pion and two neutrinos. This decay is extremely rare with the Standard Model (SM) predicted branching ratio to be less than 1 per 30 billion. Due to the rarity of this decay and the experimental difficulty, it has yet to be observed. Measuring the branching ratio is one of the best methods to probe for additional contributions to CP violation. An experimental branching ratio measurement will either confirm SM predictions or point towards new physics.
As this process is very rare, a clear understanding of possible background sources is crucial. Thus, we need to be able to distinguish the decay of interest among all other events. A potential background source can originate from KL0 to KS0 regeneration. This presentation will discuss the methods and results of the cross section measurement of the coherent regeneration of the KL0 into the KS0 on an aluminum target with the KOTO detector.
*DOE grant DE-SC0007859
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