99 citations · 723 across the 22 of their papers we have counts for
24 papers
Novel Multilepton Signatures from the Fermionic Portal to Vector Dark Matter
Alexander Belyaev, Manimala Chakraborti, Claire Shepherd-Themistocleous +1
We perform a collider study of a novel multilepton signature arising from pair production of heavy vector-like leptons followed by cascade decays through a dark sector. In the muon…
Hilbert series for ALP EFTs
Christophe Grojean, Jonathan Kley, Chang-Yuan Yao
Axions and axion-like particles (ALPs) are ubiquitous in popular attempts to solve supercalifragilisticexpialidocious puzzles of Nature. A widespread and vivid experimental program…
Searching for heavy neutral lepton and lepton number violation through VBS at high-energy muon colliders
Tong Li, Chang-Yuan Yao, Man Yuan
High-energy muon collider can play as an emitter of electroweak gauge bosons and thus leads to substantial vector boson scattering (VBS) processes. In this work, we investigate the…
Revealing the origin of neutrino masses through the Type II Seesaw mechanism at high-energy muon colliders
Tong Li, Chang-Yuan Yao, Man Yuan
The future muon collider can play as an ideal machine to search for new physics at high energies. In this work, we study the search potential of the heavy Higgs triplet in the Type…
Systematic study of one-loop realizations of long-range decay operators
Ping-Tao Chen, Gui-Jun Ding, Chang-Yuan Yao
We study the systematical one-loop decomposition of the dimension-7 long-range decay operators. We find that there are 3 genuine one-loop topologies and 8 diagrams. The proc…
A minimal modular invariant neutrino model
Gui-Jun Ding, Xiang-Gan Liu, Chang-Yuan Yao
We present a neutrino mass model based on modular symmetry with the fewest input parameters to date, which successfully accounts for the 12 lepton masses and mixing parameters thro…
Probing heavy triplet leptons of the type-III seesaw mechanism at future muon colliders
Tong Li, Han Qin, Chang-Yuan Yao +1
We study the search potential of heavy triplet leptons in Type III Seesaw mechanism at future high-energy and high-luminosity muon colliders. The impact of up-to-date neutrino osci…
Measurement of Higgs boson self-couplings through vector bosons scattering in future muon colliders
Junmou Chen, Tong Li, Chih-Ting Lu +2
The scattering of longitudinal vector bosons (VBS) has been proven to be a complementary channel to measure the Higgs self-couplings in the Standard Model (SM) and…
Decomposition of short-range decay operators at one-loop level
Ping-Tao Chen, Gui-Jun Ding, Chang-Yuan Yao
We perform a systematical study of the dimension-9 short-range decay operators at one-loop level. There are only six genuine topologies which generate eight diagrams, and th…
Charged lepton flavor violation in light of the muon magnetic moment anomaly and colliders
Tong Li, Michael A. Schmidt, Chang-Yuan Yao +1
Any observation of charged lepton flavor violation (CLFV) implies the existence of new physics beyond the SM in charged lepton sector. CLFV interactions may also contribute to the…
The collider tests of a leptophilic scalar for the anomalous magnetic moments
Ning Chen, Bin Wang, Chang-Yuan Yao
We study the anomalous muon and electron magnetic moments by introducing a scalar with CP-violating Yukawa couplings to the lepton sector. By fitting these two magnetic moments wit…
Modular GUT
Gui-Jun Ding, Stephen F. King, Chang-Yuan Yao
Modular symmetry offers the possibility to provide an origin of discrete flavour symmetry and to break it along particular symmetry preserving directions without introducing flavon…
Searching for heavy neutrino in terms of tau lepton at future hadron collider
Chengcheng Han, Tong Li, Chang-Yuan Yao
The tau lepton plays important role in the correlation between the low-energy neutrino oscillation data and the lepton flavor structure in heavy neutrino decay. We investigate the…
Modular Invariant Models for Quarks and Leptons with Generalized CP Symmetry
Chang-Yuan Yao, Jun-Nan Lu, Gui-Jun Ding
We perform a systematical analysis of the modular models with generalized CP for the masses and flavor mixing of quarks and leptons, and the most general form of the quark an…
Fermion Masses and Mixing from Double Cover and Metaplectic Cover of Modular Group
Chang-Yuan Yao, Xiang-Gan Liu, Gui-Jun Ding
We perform a comprehensive study of the homogeneous finite modular group which is the double covering of . The integral weight and level 5 modular forms have been const…
Half-integral weight modular forms and application to neutrino mass models
Xiang-Gan Liu, Chang-Yuan Yao, Bu-Yao Qu +1
We generalize the modular invariance approach to include the half-integral weight modular forms. Accordingly the modular group should be extended to its metaplectic covering group…
Modular Invariant Quark and Lepton Models in Double Covering of Modular Group
Xiang-Gan Liu, Chang-Yuan Yao, Gui-Jun Ding
We perform a comprehensive analysis of the homogeneous finite modular group which is the double covering of group. The weight 1 modular forms of level 4 are…
Imprint of a new light particle at KOTO?
Yi Liao, Hao-Lin Wang, Chang-Yuan Yao +1
Recently, the KOTO experiment reported their new preliminary result of searching for the decay . Three candidate events were observed in the signal region, which e…
Systematic Analysis of Dirac Neutrino Masses at Dimension Five
Chang-Yuan Yao, Gui-Jun Ding
We perform a systematic study of the Dirac neutrino masses which arise from a dimension five effective operator with a singlet scalar. We identify all possible realizations of this…
Systematic Study of One-Loop Dirac Neutrino Masses and Viable Dark Matter Candidates
Chang-Yuan Yao, Gui-Jun Ding
We study the generation of small neutrino masses from the dimension six effective operator at tree level and one-loop level, the neutrinos are assumed to be Dirac particles. We fin…
CP Symmetry and Lepton Mixing from a Scan of Finite Discrete Groups
Chang-Yuan Yao, Gui-Jun Ding
Including the generalized CP symmetry, we have performed a comprehensive scan of leptonic mixing patterns which can be obtained from finite discrete groups with order less than 200…
Lepton Mixing Predictions from Infinite Group Series with Generalized CP
Cai-Chang Li, Chang-Yuan Yao, Gui-Jun Ding
We have performed a comprehensive analysis of the type D group as flavor symmetry and the generalized CP symmetry. All possible residual symmetries and their con…
Neutrino Mixing from CP Symmetry
Peng Chen, Chang-Yuan Yao, Gui-Jun Ding
The neutrino mass matrix has remnant CP symmetry expressed in terms of the lepton mixing matrix, and vice versa the remnant CP transformations allow us to reconstruct the mixing ma…
Lepton and Quark Mixing Patterns from Finite Flavor Symmetries
Chang-Yuan Yao, Gui-Jun Ding
We perform a systematical and analytical study of lepton mixing which can be derived from the subgroups of under the assumption that neutrinos are Dirac particles. We find…