Possible signatures of unparticles in rare annihilation type B decays

TL;DR

This paper explores how unparticles could significantly enhance the branching ratios and induce CP violation in rare B meson decays that are otherwise suppressed in the Standard Model.

Contribution

It introduces the potential impact of unparticles on rare annihilation B decays, highlighting possible observable effects like increased branching ratios and CP violation.

Findings

Unparticle effects can significantly increase decay branching ratios.

Unparticles may induce sizable direct CP violation.

Standard Model predicts negligible CP asymmetry in these decays.

Abstract

We investigate the effect of unparticles in the pure annihilation type decays $B^- \to D_s^-\phi $ and $ D_s^- K^{*0}$. Since these decays have only annihilation contributions their branching ratios are expected to be very small in the standard model and the direct CP asymmetry parameters to be zero. We find that due to the unparticle effect these branching ratios can be significantly enhanced from their standard model values. Furthermore, sizable nonzero direct CP violation could also be possible in these channels due to the presence of intrinsic CP conserving phase in the unparticle propagator.