Hai-Long Feng

collaborators

2 papers

hep-ph2025

First determination of $V_{cs, c d}$ from inclusive $D$ meson decays

Kang-Kang Shao, Hai-Long Feng, Xue-Yin Liu +3

We report the first determination of the Cabibbo-Kobayashi-Maskawa matrix elements $∣ V_{cs} ∣$ and $∣ V_{c d} ∣$ from a global fit to data from inclusive and sum-of-exclusive charm dec…

hep-ph2025

Quantum Entanglement Autodistillation in Baryon Pair Decays

Hai-Long Feng, Hao Tang, Wu-zhong Guo +1

We study the spin-entangled mixed state of a spin-1/2 baryon-antibaryon pair produced in the process e+e- to J/psi, psi(2S) to BBbar. We demonstrate that the spin entanglement of t…

First determination of Vcs,cd​ from inclusive D meson decays

Quantum Entanglement Autodistillation in Baryon Pair Decays

First determination of $V_{cs, c d}$ from inclusive $D$ meson decays