Conference on Science at the Sanford Underground Research Facility

Session

Double Beta Decay

May 14, 2024, 2:00 PM

CB 205 (SD Mines)

Conveners

Double Beta Decay: Parallel

• Mary Kidd (Tennessee Technological University)

96. LEGEND: Searching for 0νββ in 76-Ge

Brady Bos (THE UNIVERSITY of NORTH CAROLINA at CHAPEL HILL)

5/14/24, 2:00 PM

Double Beta Decay

Oral

Despite being the most abundant particle in the universe with mass, several key characteristics of the neutrino remain unknown. A theorized decay process called neutrinoless double beta decay (0νββ) offers a unique method to probe properties of the mysterious neutrino, including its quantum nature and mass. The Large Enriched Germanium Experiment for Neutrinoless double-beta Decay (LEGEND) is...

62. Recent Neutrino Parameters Impact on the Effective Majorana Neutrino Mass in 0$\nu\beta\beta$ Decay

Dongming Mei

5/14/24, 2:20 PM

Double Beta Decay

Oral

We explore the impact of recent updates to neutrino oscillation parameters and the sum of neutrino masses on the sensitivity of neutrinoless double-beta (0$\nu\beta\beta$) decay experiments. By incorporating the latest cosmological constraints on the sum of neutrino masses and laboratory measurements on oscillations, we constrain the sum of neutrino masses for both the normal hierarchy (NH)...

48. Development of Germanium (Ge) Ring Contact Detectors for Ge-based Neutrinoless Double-Beta Decay Experiment

Kunming Dong (University of South Dakota)

5/14/24, 2:40 PM

Double Beta Decay

Oral

The next generation neutrinoless double beta (0νββ) decay experiments aim to achieve sensitive to a decay with a half-life of ~1028 years. A germanium-76 (Ge-76)-based experiment can achieve the discovery potential for this rare decay process due to its excellent energy resolution and ability to reject scattered gamma-ray events. LEGEND-1000 prefers large-size detectors (>3 kg per detector)...

46. Enhancing XENONnT's Sensitivity to Neutrinoless Double-beta Decay with TextCNN

Min Zhong (University of California, San Diego)

5/14/24, 3:00 PM

Double Beta Decay

Oral

XENONnT employs a large target mass and dual-phase TPC to achieve unparalleled sensitivity in rare event searches. The neutrinoless double-beta ($0\nu\beta\beta$) decay searches at XENONnT encounters limitations due to gamma-rays emitted by the detector material. Therefore, a TextCNN (convolutional neural network for text) model with waveform augmentation is designed to extract maximum...

43. Advances in High Purity Germanium Single Crystals: Characterization and Progress at the USD

Sanjay Bhattarai (University of South Dakota)

5/14/24, 3:20 PM

Double Beta Decay

Oral

This presentation provides an overview of the recent advancements in High Purity Germanium (HPGe) crystals at the University of South Dakota (USD). The focus of this research lies in the meticulous characterization of HPGe crystals, addressing critical parameters such as impurity concentration, dislocation density, and diameter control during crystal growth.

Our goal is to improve the...