2006/08/31 by Francisco J. Botella, F. J. Botella, G.C. Branco +3 · 4 citations
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ex #hep-ph
paper · pdf · doi:10.1016/j.nuclphysb.2006.12.022
published as Nucl.Phys.B768:1-20,2007 · 29 pages, 31 figures; updated analyses and references
arxiv created 2007/01/11 · openalex publication_date 2007/01/14 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/04
We analyse present constraints on the SM parameter space and derive, in a model independent way, various bounds on New Physics contributions to Bd0-- Bd0 and Bs0-- Bs0 mixings. Our analyses include information on a large set of asymmetries, leading to the measurement of the CKM phases γ and β, as well as recent data from D0 and CDF related to the Bs0-- Bs0 system such as the measurement of ΔMBs, ASL and ΔΓsCP. We examine in detail several observables such as the asymmetries Asld, ASL, the width differences ΔΓd and ΔΓsCP and discuss the rôle they play in establishing the limits on New Physics. The present data clearly favour the SM, with the New Physics favoured region placed around the SM solution. A New Physics solution significantly different from the SM is still allowed, albeit quite disfavoured (2.6% probability). We analyse the presently available indirect knowledge on the phase χ entering in Bs0-- Bs0 mixing and study the impact of a future measurement of χ to be achieved at LHC, through the measurement of the time-dependent CP asymmetry in Bs→ J/ΨΦ decays.