Overview of the Nab experiment at SNS
ORAL
Abstract
High precision measurement of beta decay observables such as beta-neutrino
correlation coefficient a and Fierz interference term b can be used to explore
physics beyond the standard model. In particular, these measurements can pro-
vide input for unitarity tests of Cabibbo-Kobayashi-Maskawa (CKM) and look
for scalar and tensor currents in the weak interaction. The Nab experiment is
being performed at the Spallation Neutron Source (SNS) in Oak Ridge National
Lab to measure the a and b parameters in unpolarized free neutron decay with
uncertainty of Δa/a < 10-3 and Δb < 3 × 10-3, respectively. The Nab experiment
is in the final commissioning stage and is planning to take the production data
in 2024. In this talk, we will present Nab’s operation principle, an overview of
the experimental setup, systematics, and outcomes from early commissioning
during 2023.
correlation coefficient a and Fierz interference term b can be used to explore
physics beyond the standard model. In particular, these measurements can pro-
vide input for unitarity tests of Cabibbo-Kobayashi-Maskawa (CKM) and look
for scalar and tensor currents in the weak interaction. The Nab experiment is
being performed at the Spallation Neutron Source (SNS) in Oak Ridge National
Lab to measure the a and b parameters in unpolarized free neutron decay with
uncertainty of Δa/a < 10-3 and Δb < 3 × 10-3, respectively. The Nab experiment
is in the final commissioning stage and is planning to take the production data
in 2024. In this talk, we will present Nab’s operation principle, an overview of
the experimental setup, systematics, and outcomes from early commissioning
during 2023.
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Presenters
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Hitesh V Rahangdale
University of Tennesse, Knoxville
Authors
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Hitesh V Rahangdale
University of Tennesse, Knoxville