第四届重味强子结构专题研讨会

Contribution List

7. Continuum-Limit Heavy-Meson LCDAs from Lattice QCD

浩飞 高 (上海交通大学)

Heavy-meson light-cone distribution amplitudes are essential nonperturbative inputs for precision heavy-flavor phenomenology. We present a first-principles lattice-QCD determination of heavy-meson LCDAs in both QCD and HQET using the HQLaMET framework. Simulations on multiple ensembles enable controlled continuum, chiral, and infinite-momentum extrapolations. Improved lattice techniques...

1. Factorization formula connecting the $\Lambda_b$ LCDA in QCD and boosted HQET

Yuji Shi (华东理工大学)

Light-cone distribution amplitudes (LCDAs) are essential to precision phenomenology in heavy baryon decays. In this work, we derive a factorization formula connecting the leading-twist QCD LCDA to the boosted HQET LCDA of the $\Lambda_b$ baryon in the peak region. We demonstrate a significant simplification of the matching procedure by applying the method-of-regions to perturbative...

5. Next-to-leading-order QCD corrections to doubly heavy baryon production in $W^+$-boson decays

鸿浩 马 (广西师范大学)

Predicting the production of doubly heavy baryons in electroweak-boson decays with precision requires a systematic treatment of QCD radiative corrections, especially for guiding experimental searches for the yet-unobserved $\Xi_{bc}$ baryon in large $W$-boson datasets. In this work, we compute the next-to-leading-order (NLO) QCD corrections to the inclusive decay channels $W^+\to\Xi_{cc}+\bar...

4. Non-perturbative Hamiltonian renormalization in the basis light-front approach: Application to the $\Omega_{ccc}$ baryon

Yang Li (University of Science and Technology of China)

Within the basis light-front Hamiltonian approach, we investigate the structure and properties of the triply charmed baryon $\Omega_{ccc}$. Our framework begins with a phenomenological quark-quark Hamiltonian comprising a one-gluon exchange interaction and a holographic confinement potential, with parameters fully constrained by fits to the meson mass spectrum. While extending this same...

3. Production of $D_s\bar{D}_s$ and $D\bar{D}$ bound states in $B$ decays within a Bethe-Salpeter model

Dr 振洋 王 (宁波大学)

Within a Bethe-Salpeter model, we investigate the production of possible $D_s\bar{D}_s$ $(X_{s\bar{s}})$ and $D\bar{D}$ $(X_{q\bar{q}})$ bound states in $B$ decays. The bound state properties of the two heavy meson systems are studied in the one-boson-exchange kernel, and the resulting normalized Bethe--Salpeter wave functions are used to calculate the branching fractions of $B^+\to X_{s\bar...

6. “赢者通吃”横动量减除方法新进展

Dingyu Shao

“赢者通吃”（Winner-Take-All，WTA）重组方案具有对软辐射反冲不敏感的特点，为横动量减除方法提供了新的实现思路。本报告将介绍该方法的基本原理及近期进展，重点讨论其在红外奇点处理、微分截面计算和高阶微扰修正中的应用，并简要展望其在微扰QCD研究中的发展前景。