12th International Workshop on Charm Physics (CHARM 2025)

Session

Parallel III: Lattice QCD

15 May 2025, 14:00

Tsung-Dao Lee Institute

Conveners

Parallel III: Lattice QCD

• Chia-Wei Liu
• Fanrong Xu

13. Radiative and semileptonic decays of charmed mesons from lattice QCD

Yu Meng (Zhengzhou University)

15/05/2025, 14:00

In this talk, I will introduce recent progresses on the radiative and semileptonic decays of charmed mesons using the lattice QCD method.

68. Towards High-Precision Lattice QCD Calculations of Heavy Meson LCDAs

Xue-Ying Han (IHEP)

15/05/2025, 14:20

Heavy meson decays can be investigated using the factorization approach, where the light-cone distribution amplitude (LCDA) of the heavy meson serves as the key non-perturbative input. In this work, we developed a sequential effective theory framework to determine the heavy meson LCDA from first principles. Our lattice simulations are carried out on three different ensembles to enable a...

70. Form factors in semileptonic decay $D_s\to\phi\ell\nu$ from lattice QCD

Gaofeng Fan (Nanjing University)

15/05/2025, 14:40

Semi-leptonic decays offer an ideal place to deeply understand hadronic transitions in the nonperturbative region of QCD and explore the weak and strong interactions in the charm sector. Combining with experimental data, the CKM matrix element can be extracted, and it helps to test unitarity of CKM matrix and searching for new physics beyond SM. In this talk, the full lattice QCD calculations...

6. Charmed meson masses and decay constants from CLQCD ensembles

Hai-Yang Du

15/05/2025, 15:00

We present the determination of the charm quark mass, the masses, and decay constants of charmed mesons using thirteen 2+1 flavor gauge ensembles at five different lattice spacings $a\in[0.05,0.11]$ fm, 8 pion masses $m_{\pi}\in(130,360)$ MeV, and several values of the strange quark mass, which facilitate us to do the chiral and continuum extrapolation. These ensembles are generated through...

108. Resonance in $\eta_c\eta_c-J/\psi J/\psi$ Scattering from Lattice QCD

Geng Li

15/05/2025, 15:20

Our research investigates the scattering of $\eta_c \eta_c$ and $J/\psi J/\psi$ in the $0^{++}$ channel, with center-of-mass energies up to $6.6$\,GeV, on $N_f=2$ lattice QCD.
The study is conducted at two pion masses, $m_\pi \approx 250\,(420)$\,MeV, on anisotropic lattices of different sizes.
We calculate the finite-volume energy levels from lattice QCD simulations with $N_f=2$...

110. Hidden strangeness in meson weak decays to baryon pair

湘楠/Xiang-Nan 靳/Jin (国科大杭州高等研究院)

15/05/2025, 15:40

Our study focuses on the weak decay of ( D_s^+ \to p \overline{n} ), which is the only possible two-body baryonic decay in the ( D ) meson system. An analysis using perturbative quantum chromodynamics (pQCD) is challenging in this decay due to the small amount of energy released. In particular, naive factorization, suppressed by the light quark masses, results in a minor contribution to...

117. Prospects of charm production at neutrino telescope

Hualin Mei

15/05/2025, 15:55

Atmospheric neutrinos and muons, produced from cosmic-ray-induced air showers, are one of the dominant backgrounds for astrophysical neutrino detections. The flux with energy below 100 TeV is dominated by muons and conventional atmospheric neutrinos produced by pion and kaon decays. In contrast, their prompt counterparts, from decays of short-lived charm hadrons, are predicted to contribute at...

14. Light cone distribution amplitude for the baryon on lattice QCD

Jun Hua (South China Normal University)

The light-cone distribution amplitudes (LCDAs) are probability amplitudess for the longitudinal momentum fractions of partons in the leading Fock states of hadrons. Within Quantum Chromodynamics(QCD), the non-perturbative LCDAs play a pivotal role for the description of exclusive processes. In this report, we will give an introduction of the progress for calculatiing baryon LCDAs on lattice,...