3 papers
hep-ph2026
From QCD sum rules to HQET sum rules: Heavy-quark limit of four-quark operator matrix elements
En-Qi Wu, Yi-Peng Xing, Chen-Hang Weng +1
Heavy quark expansion theory provides the standard theoretical framework for understanding the lifetimes of weakly decaying heavy-flavor hadrons. Within this framework, the matrix…
hep-ph2024
Semileptonic decays of singly heavy baryons
Yi-Peng Xing, Xiao-Qian Jiang, Zhen-Xing Zhao
weak decays of heavy flavor hadrons play a unique role in the field of heavy flavor physics. In this work, we investigate semileptonic decays of singly heavy bary…
hep-ph2024
A progress in inverse matrix method in QCD sum rules
Zhen-Xing Zhao, Yi-Peng Xing, Run-Hui Li
In traditional QCD sum rules, the simple hadron spectral density model of ``delta-function-type ground state + theta-function-type continuous spectrum" determines that there is no…