Randall-Sundrum Corrections to the Width Difference and CP-Violating Phase in B⁰ₛ-Meson Decays

الأصل · EN

We study the impact of the Randall-Sundrum setup on the width difference ΔΓₛ and the CP-violating phase ϕₛ in the Bₛ⁰-Bₛ⁰ system. Our calculations are performed in the general framework of an effective theory, based on operator product expansion. The result can thus be used for many new physics models. We find that the correction to the magnitude of the decay amplitude Γ₁₂ is below 4% for a realistic choice of input parameters. The main modification in the ΔΓₛ/βₛ-plane is caused by a new CP-violating phase in the mixing amplitude, which allows for a better agreement with the experimental results of CDF and DØfrom Bₛ⁰→ J/ψϕ decays. The best-fit value of the CP asymmetry Sψϕ can be reproduced, while simultaneously the theoretical prediction for the semileptonic CP asymmetry A SLˢ can enter the 1σ range.