5 papers
Probing CP Violation through Vector Boson Fusion at High-Energy Muon Colliders
Qing-Hong Cao, Jian-Nan Ding, Yandong Liu +1
We investigate CP-violating effects in electroweak interactions at future high-energy muon colliders within the Standard Model Effective Field Theory (SMEFT) framework. Focusing on…
Berry phase in axion physics, SM global structure, and generalized symmetries
Qing-Hong Cao, Shuailiang Ge, Yandong Liu +1
We investigate the Berry phase arising from axion-photon and axion-fermion interactions. The effective Hamiltonians in both systems share the same form, enabling a unified descript…
First Constraint on Axion-Photon Coupling from Neutron Star Observations
Jun-Chen Wang, Shunshun Cao, Jinchen Jiang +3
We propose a novel method to detect axions which uniquely depends on the dimensionless axion-photon coupling , independent of the suppressive axion decay constant . Usin…
Distinguishing Dirac from Majorana Heavy Neutrino at Future Lepton Colliders
Qing-Hong Cao, Kun Cheng, Yandong Liu
We propose to identify whether a sterile neutrino is Dirac-type or Majorana-type by counting the peak of the rapidity distribution at lepton colliders. Our method requires only one…
Unitarity Bounds and Basis Transformations in SMEFT: An Analysis of Warsaw and SILH Bases
Qing-Hong Cao, Yandong Liu, Shu-Run Yuan
The equivalence between the Warsaw and SILH bases in Standard Model Effective Field Theory is well established, with transformation rules connecting the two via equations of motion…