Kaiwen Chen

collaborators

3 papers

hep-ph2026

Unraveling weak radiative hyperon decays with broken flavor symmetry

Kaiwen Chen, Lin Qiu, Jin Sun +2

We present a broken $S U (3)$ flavor analysis of weak radiative decays of spin-1/2 hyperons, incorporating current-current and electromagnetic-penguin contributions as well as charge…

hep-ph2026

Angular distribution of $Λ_{c}^{+} \to Λ_{1405/1520}^{*} (\to Σ π) ℓ^{+} ν_{ℓ}$ and implications for form factors

Kaiwen Chen, Zhi-Peng Xing, Xudong Yu +1

We study the cascade semileptonic decay $Λ_{c}^{+} \to Λ_{1405/1520}^{*} (\to Σ π) ℓ^{+} ν_{ℓ}$ using the helicity amplitude formalism, and derive the full four-body angular distribution. The…

hep-ph2024

Decoding spin-parity quantum numbers and decay widths of double $J / ψ$ exotic states

Kaiwen Chen, Feng-Xiao Liu, Qiang Zhao +3

We derive helicity amplitudes for the fully charmed tetraquark states decays into vector meson pair under two types of models, where the one is from quark model and the other one i…

Unraveling weak radiative hyperon decays with broken flavor symmetry

Angular distribution of Λc+​→Λ1405/1520∗​(→Σπ)ℓ+νℓ​ and implications for form factors

Decoding spin-parity quantum numbers and decay widths of double J/ψ exotic states

Angular distribution of $Λ_{c}^{+} \to Λ_{1405/1520}^{*} (\to Σ π) ℓ^{+} ν_{ℓ}$ and implications for form factors

Decoding spin-parity quantum numbers and decay widths of double $J / ψ$ exotic states