******** CTCD/NTHU HEP Seminar ********

Speaker ：Prof. Pin-Jung Chiu (NTU).

Title ：Searching for neutrinoless double beta decay with LEGEND

Time ：12:30-13:30, Thursday, 2025/4/10

Place ：R521, 5F, General Building II, Nat'l Tsing Hua Univ.

Host ： Prof. Po-Yen Tseng (NTHU)

Abstract:
The nature of neutrinos remains a long-standing question in modern
physics. The observation of a hypothesized, extremely rare process,
neutrinoless double beta decay (0νββ), would demonstrate that neutrinos
have a Majorana mass and would establish lepton-number violation. In
this presentation, I will introduce the LEGEND experiment, a two-phased
project searching for 0νββ of 76Ge. I will show the recently unblinded
data from the first physics run of the Phase I experiment, accumulated
with 61 kg·yr of exposure, and discuss the ongoing R&D projects
contributing to the goal of the Phase II experiment to improve the
discovery sensitivity by an additional order of magnitude.