Conveners
03 - 中微子理论
- 玉峰 李
03 - 中微子理论
- 鹏巍 赵
Starting from LR symmetric model, one identifies corresponding SMEFT operators and subsequently LEFT operators, these operators are then used to construct the neutrino mediated long-range neutrinoless double beta decay process. With the S-matrix theory, we derive the decay width and recover the expressions obtained from a direct model calculation. These results are compared with the widely...
这个报告中所涉及的地下和空间实验探测，分别指代下一代地下中微子实验和空间引力波实验，以江门和太极作为典型代表。在以往的经验中，质子衰变是作为检验大统一理论的最主要手段。近些年来，受益于中微子精确测量和引力波观测的迅速发展，从多个方面检验大统一理论成为可能。其一是检验夸克与轻子之间的质量与味混合关联，其二是测量宇宙弦引力波，这里的宇宙弦是大统一对称性自发破缺后导致的拓扑缺陷。我将介绍这些唯象学和宇宙学效应如何从大统一中产生，并讨论如何用相关实验来检验粒子物理的大统一理论。
We investigate the possibility of neutrinoless double beta decay $( 0 \nu \beta\beta)$ and leptogenesis within a low-scale seesaw mechanism with additional sterile neutrinos. The general effective field theory (EFT) considerations suggest that if there are experimentally observable signatures in $0 \nu \beta \beta$-decay and the lepton asymmetry generated by the right-handed neutrinos, the...
The detection of ultrahigh energy neutrinos not only provides a way to understand cosmic ray accelerators but also opens up a portal to study fundamental particle physics, both within and beyond the Standard Model. In this talk, I will start by discussing the implications of the Glashow resonance event recently observed by IceCube. Then, I will move on to the forthcoming observations of...
In this talk, I will demonstrate the impact from nuclear structural aspects on the 0νββ matrix element calculations. Especially, I will outline recent works on neutrinoless double-beta (0νββ) decay nuclear matrix elements by using the Hamiltonian-based generator coordinate method, which enables the treatment of collective and non-collective correlations on the same footing. In addition, I will...
Coherent elastic neutrino-nucleus scattering (CEνNS) is a standard model (SM) process that has been observed by the COHERENT experiment in recently years.The observation of CEνNS also opens a new window to probe new physics beyond the SM at low energies. In this talk, I will discuss several studies of searching for new physics at CEvNS experiments, which includes the measurement of low energy...
原子核无中微子双贝塔衰变是粒子物理、核物理、中微子物理、宇宙学等领域的科学前沿，是可能突破粒子物理标准模型的重要研究方向。无中微子双贝塔衰变理论研究的难点之一是通过核多体方法给出可靠的原子核矩阵元，而可靠原子核矩阵元的计算有赖于精确的核多体波函数。最近建立的相对论组态相互作用密度泛函理论，结合了相对论密度泛函和组态相互作用壳模型的优势，为给出高精度的核多体波函数提供了重要的理论工具。本次报告将主要介绍无中微子双贝塔衰变的研究背景和研究意义，相对论组态相互作用密度泛函理论的基本思想和优势，以及该方法在原子核无中微子双贝塔衰变方面所取得的最新研究进展。
Nuclear matrix elements (NME) are a crucial input for the interpretation of neutrinoless double beta decay data. We consider a representative set of recent NME calculations from different methods and investigate the impact on the present bound on the effective Majorana mass mββ by performing a combined analysis of the available data as well as on the sensitivity reach of future projects. The...
