12–16 Dec 2022
IISER Mohali
Asia/Kolkata timezone

Statistical significances for proton decay experiments

15 Dec 2022, 14:00
1h
IISER Mohali

IISER Mohali

Lecture Hall Complex, IISER Mohali, Sector 81, Knowledge city, SAS Nagar, Punjab, India
Poster Poster - 3

Speaker

Prudhvi Bhattiprolu (University of Michigan)

Description

We study the statistical significances for exclusion and discovery of proton decay at current and future neutrino detectors. Various counterintuitive flaws associated with frequentist and modified frequentist statistical measures of significance for multi-channel counting experiments are discussed in a general context and illustrated with examples. We argue in favor of conservative Bayesian-motivated statistical measures, and as an application we employ these measures to obtain the current lower limits on proton partial lifetime at various confidence levels, based on Super-Kamiokande's data, generalizing the $90\%$ CL published limits. Finally, we present projections for exclusion and discovery reaches for proton partial lifetimes in $p \rightarrow \overline \nu K^+$ and $p \rightarrow e^+ \pi^0$ decay channels at Hyper-Kamiokande, DUNE, JUNO, and THEIA.

Session Beyond the Standard Model

Author

Prudhvi Bhattiprolu (University of Michigan)

Presentation materials

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