The Korean Physical Society 06130 22, Teheran-ro 7-gil, Gangnam-gu, Seoul, Republic of Korea 610 Representation : Tae Won NOH TEL: 02-556-4737 FAX: 02-554-1643 E-mail : webmaster@kps.or.kr Copyright(C) KPS, All rights reserved.

# The XXX International Conference on Neutrino Physics and Astrophysics (Neutrino 2022)

30 May 2022 to 4 June 2022
Virtual Seoul
Asia/Seoul timezone

## Conditional PISCES method for the NOvA 3-flavor oscillation analysis

Not scheduled
5m
Virtual Seoul

#### Virtual Seoul

Poster Neutrino oscillation

### Description

NO$\nu$A is a long-baseline neutrino oscillation experiment with the primary physics goals of precisely measuring the neutrino oscillation parameters $\theta_{23}$ and $\Delta m^2_{32}$, determining the neutrino mass hierarchy, and constraining the value of $\delta_{CP}$, primarily via the study of muon neutrino to electron neutrino oscillation. Extracting values for oscillation parameters from fits to data currently relies on treating systematic uncertainties as nuisance parameters, which suffers from poor scalability as the number of uncertainties becomes larger. In this poster we present PISCES (Parameter Inference with Systematic Covariance and Exact Statistics), a novel method that circumvents this scalability problem by encoding systematic uncertainties into a covariance matrix, and then considering them as an ensemble. PISCES has the advantage of supporting more complex fits, such as joint Near and Far Detector fits, and is ideal for inclusion of low-statistics samples in the fits. This poster focuses particularly on the conditional PISCES method, an efficient approach in which the Near Detector observation is used to create a conditional covariance matrix, constraining systematic uncertainties for a Far Detector only fit.

Collaboration NOvA Experiment

### Primary author

Miriama Rajaoalisoa (University of Cincinnati)

### Co-author

Dr Jeremy Hewes (University of Cincinnati)

### Presentation Materials

 20220513051305_4.jpg 20220513051315_1.mp4