arXiv subjects

Jun-Xiao Chen

Publications and source records attributed to Jun-Xiao Chen.

2 recordsLinked to original sources

arXiv2006

A study on the radiative dileptonic decays $B^0(B_s)\toγ\ell^+\ell^-$

We study the rare radiative dileptonic decays $B^0(B_s)\to γ\ell^+\ell^-$ ($\ell=e,μ$) in the standard model. By using the $B$ meson wave function constrained by non-leptonic decays, the branching ratios turn out to be of the order of $10^{-9}$ for $B_s\toγμ^+μ^-$, $γe^+ e^-$ and $10^{-10}$ for $B^0\toγμ^+μ^-$, $γe^+ e^-$. Based on the study, these decays are accessible at the near future LHC-b experiment, which are useful to determine the $B(B_s)$ wave function.

hep-ph↗

arXiv2005

Branching ratio of rare decay $B^0(B_s)\to γν\barν$

The three-body decay $B^0(B_s)\to γν\barν$ can occur via penguin and box diagrams in the standard model (SM). These channels are useful to determine the decay constants $f_B$ ($f_{B_s}$) and $B$ ($B_s$) meson wave function. Using the B meson wave function determined in hadronic $B (B_s)$ decays, we calculate and get the branching ratio of order $10^{-9}$ and $10^{-8}$ for $B^0$ and $B_s$ decay, respectively. They agree with previous calculations.

hep-ph↗