Events login

Main Events Calendar

Warning Icon This event is in the past.
April 19, 2019 | 3:30 p.m. - 4:30 p.m.
Category: Seminar
Location: Physics #312 | Map
666 W. Hancock
Detroit, MI 48201
Cost: Free!
Audience: Academic Staff, Current Graduate Students, Current Undergraduate Students, Faculty

Title: A new search of rare kaon decay by observing nothing

Speaker: Stephanie Su (University of Michigan)

Abstract: The goal of the K0TO experiment is to search for the direct CP violating decay mode, 𝐾𝐿→ 𝜋0𝜈𝜈̅, and to probe for physics beyond the Standard Model of elementary particle physics by measuring the branching ratio of this decay. The data was analyzed by a blind analysis technique and determined a single event sensitivity of (1.30 ± 0.01 stat. ± 0.14 sys.) x 10−9 with 0.42 ± 0.18 background events in the signal region. No candidate events in the signal region were observed, which allows an upper limit of 3.0 x 10−9 to be set at 90% confidence level. This is more than an order of magnitude improvement from the previous result. This talk will present the details of 2015 analysis.

For more information about this event, please contact Matt Barrett at +1 313 5770750 or