Form Factors and Decay of $\bar{B}_s^0\to J/\psi \phi$ From QCD Sum Rule

TL;DR

This paper uses QCD sum rules to calculate form factors for the decay of _s^0 to J/ and _s^0 to  , predicting decay rates that align with experimental measurements.

Contribution

It provides new QCD sum rule calculations of _s^0 form factors and applies them to predict decay branching ratios consistent with data.

Findings

Calculated _s^0 form factors using QCD sum rules.

Predicted _s^0  decay branching ratios.

Results agree with experimental measurements.

Abstract

We calculate $\bar{B}_s^0\to \phi$ translation form factors $V$, $A_0$, $A_1$, $A_2$ based on QCD sum rule and study the nonleptonic two-body decay of $\bar{B}_s^0\to J/\psi \phi$ with the form factors obtained. We calculate the time-integrated branching ratio of $\bar{B}_s^0\to J/\psi \phi$ decay. The results for both the total branching ratio and the cases for the final vectors in longitudinal and transverse polarizations are consistent with experimental data.