Xiao-Gang He

activity

20232026

most citedThe SM expected branching ratio for

h \to γ γ

and an excess for

h \to Z γ

5 citations · 10 across the 11 of their papers we have counts for

collaborators

11 papers

hep-ph2026

Nonstandard Solution for Anomaly Cancellation as Seesaw Neutrino Origin in the SM

Zi-Yue Zou, Chia-Wei Liu, Zhong-Lv Huang +1

For fixed Standard Model (SM) non-Abelian representations of 15 chiral fermions with arbitrary hypercharges, anomaly cancellation admits the usual assignment and a distinct nonstan…

hep-ph2026

Probing the imaginary parts and their $q^{2}$ dependences for the tau $g - 2$ and EDM

Xin-Yu Du, Xiao-Gang He, Zhong-Lv Huang +2

The $τ$ anomalous magnetic dipole moment (MDM) $a_{τ} = (g - 2)_{τ} /2$ and electric dipole moment (EDM) $d_{τ}$ , are precision probes of electroweak dynamics and possible new physics source…

hep-ph2026

Spin-flavor entanglement in $Λ_{b} \to Λ D$ and weak phase extraction

Yong Du, Chao-Qiang Geng, Xiao-Gang He +3

We identify a new spin-flavor entanglement structure in $Λ_{b} \to Λ D$ decays, formed by the correlation between the $Λ$ spin and the $D$ flavor states ( $D = D^{0}, D^{0}, D_{1}, D_{2}$ ).…

hep-ph2025★ 1 cited

Complex $τ$ Electric Dipole Moment from GeV-Scale New Physics

Zhong-Lv Huang, Xin-Yu Du, Xiao-Gang He +2

Among the charged leptons, the $τ$ electric dipole moment~( $d_{τ}$ ) is the least constrained. We show that the Im[ $d_{τ}$ ] imposes strong constraints on new physics that have yet to be…

hep-ph2025

Charmed baryon decays: $S U (3)_{F}$ breaking and CP violation

Chang Yang, Xiao-Gang He, Chia-Wei Liu

We present a comprehensive study of anti-triplet charmed baryon decays into octet baryons and pseudoscalar mesons using the $S U (3)_{F}$ flavor symmetry framework. By decomposing the…

hep-ph2025

Large CP violation in $Λ_{b}^{0} \to p K^{-} π^{+} π^{-}$ and its U-spin partner decays

Xiao-Gang He, Chia-Wei Liu, Jusak Tandean

The LHCb Collaboration has recently found a large CP-violating rate asymmetry in the $b$ -baryon decay $Λ_{b}^{0} \to p K^{-} π^{+} π^{-}$ . This is the first observation of CP violation in baryo…

hep-ph2025

Precise measurement of CP violating $τ$ EDM through $e^{+} e^{-} \to γ^{*}, ψ (2 s) \to τ^{+} τ^{-}$

Xiao-Gang He, Chia-Wei Liu, Jian-Ping Ma +2

A nonzero electric dipole moment of a tauon, $d_{τ}$ , signals CP violation and provides an important probe for new physics. We study methods to measure $d_{τ}$ at low energy $e^{+} e^{-}$ …

hep-ph2024★ 4 cited

Large CP violation in charmed baryon decays

Xiao-Gang He, Chia-Wei Liu

This work presents the first detailed numerical predictions of CP violation in antitriplet charmed baryon decays. Adopting the flavor $S U (3)_{F}$ symmetry and the final state re-scat…

hep-ph2024★ 5 cited

The SM expected branching ratio for $h \to γ γ$ and an excess for $h \to Z γ$

Xiao-Gang He, Zhong-Lv Huang, Ming-Wei Li +1

The recent measurements of $h \to Z γ$ from ATLAS and CMS show an excess of the signal strength $μ_{Z} = (σ \cdot B)_{obs} / (σ \cdot B)_{SM} = 2.2 \pm 0.7$ , n…

hep-ph2023

Complete determination of $S U (3)_{F}$ amplitudes and strong phase in $Λ_{c}^{+} \to Ξ^{0} K^{+}$

Chao-Qiang Geng, Xiao-Gang He, Xiang-Nan Jin +2

The BESIII collaboration has recently reported the first time measurement of the decay asymmetry $α (Λ_{c}^{+} \to Ξ^{0} K^{+}) = 0.01 \pm 0.16 (s t a t .) \pm 0.03 (sy s t .)$ and also a sizable ph…

hep-ph2023

Global analysis of measured and unmeasured hadronic two-body weak decays of antitriplet charmed baryons

Zhi-Peng Xing, Xiao-Gang He, Fei Huang +1

A large amount of data on hadronic two body weak decays of anti-triplet charmed baryons $T_{c 3 ˉ}$ to an octet baryon $T_{8}$ and an octet or singlet pseudoscalar meson $P$ , $T_{c…

Nonstandard Solution for Anomaly Cancellation as Seesaw Neutrino Origin in the SM

Probing the imaginary parts and their q2 dependences for the tau g−2 and EDM

Spin-flavor entanglement in Λb​→ΛD and weak phase extraction

Complex τ Electric Dipole Moment from GeV-Scale New Physics

Charmed baryon decays: SU(3)F​ breaking and CP violation

Large CP violation in Λb0​→pK−π+π− and its U-spin partner decays

Precise measurement of CP violating τ EDM through e+e−→γ∗,ψ(2s)→τ+τ−

Large CP violation in charmed baryon decays

The SM expected branching ratio for h→γγ and an excess for h→Zγ

Complete determination of SU(3)F​ amplitudes and strong phase in Λc+​→Ξ0K+

Global analysis of measured and unmeasured hadronic two-body weak decays of antitriplet charmed baryons

Probing the imaginary parts and their $q^{2}$ dependences for the tau $g - 2$ and EDM

Spin-flavor entanglement in $Λ_{b} \to Λ D$ and weak phase extraction

Complex $τ$ Electric Dipole Moment from GeV-Scale New Physics

Charmed baryon decays: $S U (3)_{F}$ breaking and CP violation

Large CP violation in $Λ_{b}^{0} \to p K^{-} π^{+} π^{-}$ and its U-spin partner decays

Precise measurement of CP violating $τ$ EDM through $e^{+} e^{-} \to γ^{*}, ψ (2 s) \to τ^{+} τ^{-}$

The SM expected branching ratio for $h \to γ γ$ and an excess for $h \to Z γ$

Complete determination of $S U (3)_{F}$ amplitudes and strong phase in $Λ_{c}^{+} \to Ξ^{0} K^{+}$