2019/05/14 by Faisal Munir Bhutta, Bhutta, Faisal Munir, Cai Dian Lü +1 · 1 citation
Physics and Astronomy · #Particle physics theoretical and experimental studies #Cosmology and Gravitation Theories #Quantum Chromodynamics and Particle Interactions
paper · pdf · doi:10.48550/arxiv.1905.05354
The doubly weak b→ dd s and b→ ss d processes are highly suppressed in the standard model that offer the unique opportunity to explore new physics signals. The wrong sign decay \smash B0→ K+π- mediated by the b→ dd s transition can be distinguished from the penguin decay \smashB0→ K+π-, through time dependent measurement in experiments. We consider a model independent analysis of \smash B0→ K+π- decay, within the perturbative QCD approach and explore various effective dimension-6 operators, in which large effects are possible. We also study the doubly weak exclusive process in two example models namely Randall-Sundrum model with custodial protection and the bulk-Higgs Randall-Sundrum model. A large and significant enhancement of the branching ratio, in comparison to the standard model, is observed after satisfying all the relevant constraints on the parameter spaces of these models, which requires to be searched in future experiments.