Large Dimuon Asymmetry In Bs-bar B_s Mixing From Unparticle Indced Gamma^{12}_s

TL;DR

This paper proposes that unparticle physics can explain the large dimuon asymmetry observed in the B_s meson system by inducing significant decay width differences and CP violation, aligning with recent experimental data.

Contribution

It introduces a novel unparticle-based mechanism to account for the large decay width difference and CP violation in B_s mixing, connecting theoretical unparticle effects with experimental anomalies.

Findings

Unparticle exchange can produce large 2_s and 2_s, explaining the dimuon asymmetry.

The model accommodates large CP violation in B_s  J/psi  phi decays.

Constraints on unparticle parameters are derived from experimental data.

Abstract

Exchange of unparticle stuff of dimension $d_\U$ with FCNC interaction can induce $M^{12,u}$ and $\Gamma^{12,u}$ causing meson and anti-meson mixing with the relation $\Gamma^{12,u}/M^{12,u} = 2 \tan(\pi d_\U)$. We show that this type of unparticle contribution can provide the much needed large $\Gamma^{12}_s$ to explain the recently observed anomalously large dimuon asymmetry in $B_s -\bar B_s$ system reported by D0 collaboration. The same interaction can also accommodate large mixing induced CP violation in $B_s \to J/\psi \phi$ indicated by CDF and D0 data. Experimental data can provide constraints on the unparticle dimension and scale.