We compute electromagnetic radiative corrections in the inverse beta decay at reactor antineutrino energies within the heavy baryon chiral perturbation theory, provide the most accurate cross-section predictions for this process, present a complete error budget, and investigate impact on the energy reconstruction at JUNO. For the first time, we consistently include quantum electrodynamics,...
Mechanisms that generate large neutrino magnetic moments consistent with observed neutrino masses typically decouples the mechanism responsible for neutrino mass and the neutrino magnetic moment. In this letter, we propose a novel framework to explain neutrino mass while accommodating a large magnetic moment for the active neutrinos. The SM neutrinos get mass via the inverse seesaw mechanism....
Cosmological correlators are calculated through the in-in formalism in (quasi-)de Sitter background. Their effective description is best represented by a reduced density matrix. In this talk, I will first review the differences between the usual EFT used in scattering amplitude calculations and the Schwinger-Keldysh EFT for correlators. I will then discuss the reduced density matrix for a...
Axion–photon conversion in magnetic fields provides a powerful probe of axions, but its sensitivity is often limited by the loss of coherence between axions and photons. Axion-magnetic resonance (AMR) overcomes this limitation through spatial or temporal variations of the magnetic field that compensate for their momentum mismatch. I will introduce this mechanism and discuss how it finds...
We propose a general framework that extends the Standard Model (SM) to the gauge group $SU(2k+3)\times Sp(2k)'\times U(1)_Y'\times Z_4$. The SM quarks are embedded in the fundamental multiplet of $SU(2k+3)$, $Sp(2k)'$ provides an extra technicolor (TC) sector, $U(1)_Y'$ helps reproduce the correct SM hypercharges, and, the discrete $Z_4$ forbids unwanted TC fermion mass terms. The strong CP...
We present a mechanism to solve the CP-strong problem with two heavy axions in a composite Higgs . An $Sp(8)$ technicolour group drives electroweak symmetry breaking by producing the Higgs as a pseudo-Nambu–Goldstone boson of the associated flavour symmetry breaking. The same sector generates the Standard Model Yukawa hierarchies through fundamental partial compositeness. At high energy,...
The multi-lepton anomalies observed at the LHC have motivated models with new scalar resonances, predicting a scalar at $150\pm5$ GeV. A narrow excess near $m_S=152\pm1$ GeV was observed in Run 2 data in the $\gamma\gamma$, $Z\gamma$, and $W^+W^-$ channels with a significance surpassing $5\sigma$. In this work, we investigate a new excess in the ATLAS Run 3 data using diphoton production in...
We apply the universal two-zero texture (UTZT) to all quark and lepton mass matrices in the SO(10) grand unified framework. With charged fermion masses fixed at their best-fit values, this texture contains only seven free parameters to account for nine flavor observables, rendering it highly predictive. Motivated by the recent JUNO indication in favor of the normal ordering of light neutrino...
Given a high-energy astrophysical neutrino flux, its source flavor ratios $\eta = \{\eta^{}_e, \eta^{}_\mu, \eta^{}_\tau\}$ are correlated with the ones $f = \{f^{}_e, f^{}_\mu, f^{}_\tau\}$ measured at a neutrino telescope via $f = P \eta$, where the elements of $P$ consist of four lepton flavor mixing parameters. But realistic inverse flavor mapping $\eta = P^{-1} f$ encounters unavoidable...
