Feng-Kun Guo

collaborators

10 papers

hep-ph2026

Neutrinoless double beta decays of hyperons in covariant chiral perturbation theory

Zi-Ying Zhao, Ze-Rui Liang, Feng-Kun Guo +2

Neutrinoless double beta ( $0 I^½ I^^{2} I^^{2}$ ) decays of spin-1/2 hyperons are investigated in a covariant baryon chiral perturbation theory framework, extended by a $I^ L = 2$ operator proport…

hep-ph2026

Hyperon neutrinoless double beta decays in chiral perturbation theory

Zi-Ying Zhao, Ze-Rui Liang, Feng-Kun Guo +2

We study the neutrinoless double beta decays of spin-1/2 hyperons, $B_{1}^{-} \to B_{2}^{+} ℓ^{-} ℓ^{-}$ with $B_{1}^{-} \in {I^£^{-}, I^^{-}}$ and $B_{2}^{+} \in {p, I^£^{+}}$ , which violate lepton numb…

hep-ph2025

Renormalization of chiral perturbation theory with spinless matter field in curved spacetime

Cheng-Cheng Li, Xiong-Hui Cao, Feng-Kun Guo

We generalize chiral perturbation theory with spinless matter fields in the fundamental representation of $SU (N)$ to curved spacetime in the presence of an external gravitati…

hep-ph2025

Gravitational form factors of pions, kaons and nucleons from dispersion relations

Xiong-Hui Cao, Feng-Kun Guo, Qu-Zhi Li +2

The gravitational form factors of pions, kaons and the nucleons are investigated by employing modern dispersive techniques and chiral perturbation theory. We determine the gravitat…

hep-ph2025

Two-Loop Extraction of the Pion-Nucleon Sigma Term

Ze-Rui Liang, Han-Xue Chen, Feng-Kun Guo +2

The pion-nucleon sigma term, characterizing the mass component of Higgs origin related to $u$ and $d$ quarks inside the nucleon, is investigated within relativistic baryon chiral p…

hep-ph2025

Nucleon mass in covariant baryon chiral perturbation theory at leading two-loop order

Ze-Rui Liang, Han-Xue Chen, Feng-Kun Guo +2

We calculate the nucleon mass within a manifestly relativistic formulation of baryon chiral perturbation theory (BChPT), extending the framework to leading two-loop order ($\mathca…