arXiv subjects

Xule Zhao

Publications and source records attributed to Xule Zhao.

3 recordsLinked to original sources

arXiv2022

Reinvestigating the $B$ ${\to}$ $PV$ decays by including the contributions from $ϕ_{B2}$ with the perturbative QCD approach

Considering the $B$ mesonic wave function $ϕ_{B2}$, the $B$ ${\to}$ $PV$ decays are restudied at the leading order for three scenarios using the perturbative QCD approach within the standard model, where $P$ $=$ $π$ and $K$, and $V$ denotes the ground $SU(3)$ vector mesons. It is found that contributions from $ϕ_{B2}$ can enhance most branching ratios, and are helpful for improving the overall consistency of branching ratios between the updated calculations and available data, although there are still several discrepancies between the experimental and theoretical results.

hep-ph↗

arXiv2021

Reinvestigating the $B$ ${\to}$ $PP$ decays by including the contributions from $ϕ_{B2}$

Considering the $B$ mesonic distribution amplitude $ϕ_{B2}$, we reinvestigated the $B$ ${\to}$ $PP$ (where $P$ $=$ $π$ and $K$) decays with the perturbative QCD (pQCD) approach based on the $k_{T}$ factorization for three scenarios. It is found that the contributions of $ϕ_{B2}$ to formfactors $F_{0}^{B{\to}P}(0)$ and branching ratios are comparable with those from the NLO corrections. The $B$ ${\to}$ $Kπ$ decays could be well explained by considering the $ϕ_{B2}$. Hence, when the nonleptonic $B$ decays are studied withe the pQCD approach, the $ϕ_{B2}$ should be taken into account seriously.

hep-ph↗

arXiv2021

The study of $η_{c}(1S)$ ${\to}$ $PP^{\prime}$ decays

The $η_{c}(1S)$ ${\to}$ $PP^{\prime}$ decays are the parity violation modes. These decays can be induced by the weak interactions within the standard model, and have been searched for based on the available experimental data. To meet the needs of experimental investigation, the $η_{c}(1S)$ ${\to}$ $PP^{\prime}$ decays are studied with the perturbative QCD approach. It is found that branching ratios are the order of $10^{-15}$ and less, which offers a ready reference for future analyses.

hep-ph↗