Search for the X(1812) in $B^{\pm} \to K^{\pm} \omega \phi$

TL;DR

This study searches for the X(1812) particle in B meson decays but finds no significant evidence, setting upper limits on its production rate and the overall decay process.

Contribution

First search for X(1812) in B decays with a large data sample, establishing upper limits on its branching fractions.

Findings

No significant X(1812) signal observed.

Upper limit on B decay involving X(1812) set at 3.2×10^{-7}.

Overall B decay to ωφ constrained to less than 1.9×10^{-6}.

Abstract

We report on a search for the X(1812) state in the decay $B^{\pm} \to K^{\pm} \omega \phi$ with a data sample of $657\times10^6$ $B\bar{B}$ pairs collected with the Belle detector at the KEKB $e^+e^-$ collider. No significant signal is observed. An upper limit ${\cal B}(B^{\pm} \to K^{\pm} X(1812),X(1812) \to \omega \phi)<3.2\times 10^{-7}$ (90% C.L.) is determined. We also constrain the three-body decay branching fraction to be ${\cal B}(B^{\pm} \to K^{\pm} \omega \phi)$ $<$ 1.9 $\times 10^{-6}$ (90% C.L.).