2006/05/17 by Rahul Sinha, Basudha Misra, W.-S. Hou +1
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph
paper · pdf · doi:10.1103/physrevlett.97.131802
published as Phys.Rev.Lett. 97 (2006) 131802 · 4 pages, 4 figures
arxiv created 2006/05/17 · openalex publication_date 2006/09/28 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
We show in a model independent way that, within the standard model, the deviation in the measured B(d)0-B[over](d)0 mixing phase caused by pollution from another amplitude is always less in magnitude, and has the same sign as, the weak phase of the polluting amplitude. The exception is to have large destructive interference between the two amplitudes: any deviation larger than a few degrees is only possible if the observed decay rate results from fine-tuned cancellations between significantly larger amplitudes. This is unlikely given our understanding of B decays. Even if the deviation reduces to a few degrees in the future, new physics would still likely be implied.