Large $CP$ phase in ${B}_{s}--{\overline{B}}_{s}$ mixing and unparticle physics

Large $C P$ phase in $B_{s} - {\bar{B}}_{s}$ mixing and unparticle physics

J. K. Parry

Phys. Rev. D 78, 114023 – Published 18 December 2008

Abstract

In this work we investigate the contribution to $B_{d, s}$ mixing from both scalar and vector unparticles in a number of scenarios. The emphasis of this work is to show the impact of the recently discovered $3 σ$ evidence for new physics found in the $C P$ phase of $B_{s}$ mixing. Here we show that the inclusion of the $C P$ phase constraints for both $B_{d}$ and $B_{s}$ mixing improves the bounds set on the unparticle couplings by a factor of $2 \sim 4$ , and one particular scenario of scalar unparticles is found to be excluded by the $3 σ$ measurement of $ϕ_{s}$ .