Measurements of $C P$ asymmetries in $D^{0} \to π^{+} π^{-} π^{0}$ decays in Dalitz plot regions at Belle II

Sumitted to PubDB: 2023-05-02

Category: Phd Thesis, Visibility: Public

Tags: -

Authors	Roy Briere, Emma Oxford
Date	2023-01-01
Belle II Number	BELLE2-PTHESIS-2023-009
Abstract	We perform a search for charge-parity violation (CPV) in the density of events in a binned Dalitz plot of $D^{*}$ -tagged $D^{0} \to π^{+} π^{-} π^{0}$ decays. The data used for this analysis is 362~ ${fb}^{- 1}$ of $Υ (4 S)$ data collected at Belle II from 2019--2022. We develop a novel binned Dalitz analysis method to determine local CPV; our method carefully accounts for nuisance asymmetries not due to CPV using the data itself rather than relying on simulations. All final asymmetry measurements are consistent with the no-CPV hypothesis. Our analysis method will scale well as Belle II collects more data, and we expect both the statistical and systematic uncertainties on the results to decrease if the analysis is redone on a larger dataset.
Conference	Pittsburgh, PA, USA

Files

BELLE2-PTHESIS-2023-009.pdf (versions: 1)
latest upload: 2024-12-02