An Analysis of Detection Asymmetry Using Baryon Decays in Belle II

Author

Matthew MestayerFollow

Date of Award

Spring 5-13-2023

Document Type

Undergraduate Thesis

Department

Physics and Astronomy

First Advisor

Jake Bennett

Second Advisor

Cecille Labuda

Third Advisor

Breese Quinn

Relational Format

Dissertation/Thesis

Abstract

The purpose of this study was to determine the detection asymmetry of the Belle II detector using decays of two common baryons, Λ⁰ → ��π^- and Σ⁺ → ��π⁰. A Monte Carlo simulation of both decays was used to determine the validity of signal isolation criteria. These criteria were then applied to the Belle II data, allowing for a comparison of the detection asymmetry in the data relative to the simulation. The results show a moderate detection asymmetry when using the Λ⁰ → ��π^- decay, particularly for forward-going baryons. For the Σ⁺ → ��π⁰ decay, a more significant asymmetry is observed, irrespective of the angular direction. These results demonstrate potential asymmetries in either detection or production that must be accounted for in future studies.

Recommended Citation

Mestayer, Matthew, "An Analysis of Detection Asymmetry Using Baryon Decays in Belle II" (2023). Honors Theses. 2976.
https://egrove.olemiss.edu/hon_thesis/2976

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This work is licensed under a Creative Commons Attribution 4.0 International License.