A5015881354- Quantum Chromodynamics and Particle Interactions
- Particle physics theoretical and experimental studies
- High-Energy Particle Collisions Research
- Medical Imaging Techniques and Applications
Nankai University
2021
Hunan Normal University
2018-2019
Using the newly measured masses of $B_c(1S)$ and $B_c(2S)$ from CMS Collaboration $1S$ hyperfine splitting determined lattice QCD as constrains, we calculate $B_c$ mass spectrum up to $6S$ multiplet with a nonrelativistic linear potential model. Furthermore, using wave functions this model radiative transitions between states within constituent quark For higher lying above $DB$ threshold, also evaluate Okubo-Zweig-Iizuka (OZI) allowed two-body strong decays $^{3}P_{0}$ Our study indicates...
The open-charm strong decays of higher charmonium states up to the mass $6P$ multiplet are systematically studied in $^3P_0$ model. wave functions initial calculated linear potential (LP) and screened (SP) quark decay widths for most well-established above thresholds can be reasonably described. By comparing our model calculations with experimental observations we also discuss nature some newly observed charmonium-like states. It is found that (i) $\psi(4415)$ may favor $\psi(4S)$ or...
Abstract In this work, we calculate the sub-leading power contributions to radiative leptonic decay. For first time, provide analytic expressions of next-to-leading and error estimation associated with expansion . our calculation, adopt two different models D -meson distribution amplitudes Within framework QCD factorization as well dispersion relation, evaluate soft contribution up logarithmic accuracy also consider higher-twist from two-particle three-particle amplitudes. Finally, find that...
We calculate the $D\to P$ transition form factors within framework of light-cone QCD sum rules (LCSR) with $D$-meson distribution amplitudes (LCDAs). The next-to-leading power (NLP) corrections to vacuum-to-$D$-meson correlation function are considered, and NLP from high-twist LCDAs SU(3) breaking effect strange quark mass investigated. Adopting exponential model LCDAs,the predicted flavor symmetry effects $R_{SU(3)}^{+,0}=1.12$ $R_{SU(3)}^{T}=1.39$, respectively, which confirms results LCSR...