The original modular flavor symmetry requires supersymmetry to enforce the Yukawa couplings to be holomorphic modular forms. The non-holomorphic modular symmetry is a generation in which supersymmetry is unnecessary in principle. In this talk, we shall present motivation, the formalism and application of non-holomorphic modular symmetry. A predictive model for both quarks and leptons will be...
Many Baryogenesis mechanisms have been proposed to address the baryon asymmetry of the universe, of which the Leptogenesis mechanism has received widespread attention due to the flourishing development of the neutrino physics. In this talk I will give a brief review on recent progress of the Leptogenesis mechanism.
Leptogenesis provides an elegant mechanism to explain the observed baryon asymmetry of the Universe (BAU), yet its experimental verification remains challenging due to requirements of either extremely heavy right-handed neutrinos or precisely fine-tuned mass splittings.
We present a scenario where an additional scalar field, coupled to both the Higgs and right-handed neutrinos (RHNs),...
We propose a parametrization of neutrino masses and mixing in the minimal seesaw model (MSM). The MSM, which introduces two heavy sterile neutrinos, is the minimal extension of the Standard Model in addressing the tiny masses of active neutrinos. The parametrization includes 11 free parameters: 6 neutrino oscillation parameters (2 mass-squared differences $\Delta m^2_{21}$, $\Delta m^2_{31}$,...
We present a model-independent search for a dark particle $\chi$ produced via four-fermion effective interactions at the DUNE Near Detector, COHERENT, and CONUS+ experiments. Analyzing scalar, pseudoscalar, vector, axial-vector, and tensor operators, we find a clear sensitivity hierarchy. DUNE-ND dominates for most interactions due to its high-intensity beam, while COHERENT and CONUS+ provide...
The recent IceCube detection of TeV neutrinos from the nearby Seyfert galaxy NGC~1068 suggests that active galactic nuclei (AGN) could make a significant contribution to the diffuse flux of astrophysical neutrinos.
The absence of TeV gamma-rays from NGC~1068 indicates neutrino production in
the vicinity of the supermassive black hole, such as disk-corona, where the high radiation density...
We investigate constraints on neutrino non-standard interactions (NSIs) in the effective field theory framework, using data from the first measurement of solar $^8$B neutrinos via coherent elastic neutrino-nucleus scattering (CE$\nu$NS) in the PandaX-4T and XENONnT experiments and data from the COHERENT experiment. The impacts of neutrino NSIs on the CE$\nu$NS cross section and the matter...
I will discuss supernova constraints on millicharged particles and axions, including both supernova cooling limits and low-energy supernova constraints.
In the construction of future lunar scientific stations, radio arrays can be deployed on the lunar surface and around subsurface lava tubes to detect high-energy neutrinos. The Askaryan effect, generated by the interaction between high-energy neutrinos and lunar regolith, produces radio emissions. On Earth, detecting radio signals from this effect is subject to significant radio frequency...
Core-collapse supernovae (CCSNe) mark the death of massive stars greater than about 8 solar masses. They are the birthplaces of neutron stars and black
holes, as well as the factories of heavy elements. The physical mechanism(s) driving their explosions is a premier open problem in astrophysics. In this talk, I will first introduce recent global efforts in advanced computer simulations that...
The study of nuclear double beta decay provides a uniquely sensitive window into physics beyond the Standard Model. While the two-neutrino mode, a rare second-order weak process, has been observed in several isotopes, the search for the neutrinoless mode remains a paramount objective in particle and nuclear physics. The observation of this decay would be a landmark discovery, as it violates...
Collider neutrinos open a new window into high-energy neutrino interactions and forward physics at hadron colliders. In this talk, I will first outline the motivation for studying collider neutrinos and introduce the LHC experiments FASER$\nu$ and SND@LHC. I will then discuss the production and detection of collider neutrinos, along with estimates of their fluxes and interaction rates at...
Charged-current quasielastic neutrino scattering is the signal process in neutrino oscillation experiments and requires precise theoretical prediction for the analysis of modern and future experimental data, starting with the nucleon vector and axial-vector coupling constants and axial-vector form factor at higher energies. In this talk, I compare a new MINERvA measurement of this form factor...
射电探测具备其它类型探测器的大部分优点，且单个造价低廉，适合大规模铺设，被认为是研究超高能粒子的理想的下一代探测技术。截至目前为止，国际上已经提出地面或高山铺设，气球和卫星搭载，月基铺设等多种探测方案。国内截至目前为止，仅一个地面铺设方案在研。本报告将探讨这些探测方案的优劣，目的是找到一个性价比高（投入较少，灵敏度高），并能与其它技术组成联合观测的实验方案。
We present a comprehensive theoretical analysis of neutrino-induced decoherence in macroscopic matter-wave interferometry experiments designed to search for dark matter and beyond-Standard Model physics. Our calculation includes contributions from the cosmic neutrino background (CνB), solar neutrinos, and reactor antineutrinos, accounting for coherent scattering processes across nuclear,...
