Speaker
Description
Unitarity tests of the Cabbibo-Kobayashi-Maskawa (CKM) quark mixing matrix offer unique insight into the electroweak part of the Standard Model. A reliable unitarity test of this matrix requires a precise and accurate value of the largest element, $V_{ud}$. Recent improvements to a theoretical correction term have prompted the need to extract $V_{ud}$ from a larger subset of nuclei including superallowed beta-transitions between nuclear mirrors. Extracting $V_{ud}$ from these transitions requires the challenging determination of the Fermi to Gamow-Teller mixing ratio, $\rho$. To this end, the Superallowed Transition BEta- NEutrino Decay Ion Coincidence Trap (St. Benedict) is currently being commissioned at the NSL which aims to extract $\rho$ via a measurement of the ToF spectra of the recoiling daughter from several mirror transitions ranging from $^{11}$C to $^{41}$Sc. Motivation and overview of St. Benedict along with results from the first delivery of radioactive ion beams, will be presented. This work is supported by the US National Science Foundation under grant numbers PHY-1725711, 2310059, and the University of Notre Dame.
| Email address | rzite@nd.edu |
|---|---|
| Supervisor's Name | Maxime Brodeur |
| Supervisor's email | mbrodeur@nd.edu |
| Funding Agency | The US National Science Foundation and the University of Notre Dame |
| Classification | Instrumentation for radioactive ion beam experiments |
