2017/04/14 by Ulrich Nierste, Nierste, Ulrich
Biochemistry, Genetics and Molecular Biology · Pharmacology, Toxicology and Pharmaceutics · Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #Neutrino Physics Research #Particle physics theoretical and experimental studies #Plant-based Medicinal Research #Quantum Chromodynamics and Particle Interactions #Venomous Animal Envenomation and Studies
paper · pdf · doi:10.48550/arxiv.1704.04529
openalex publication_date 2017/04/14 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
The mixing-induced CP asymmetries in Bd → J/ψKS and Bs → J/ψϕ are essential to detect or constrain new physics in the Bd - Bd and Bs - Bs mixing amplitudes, respectively. To this end one must control the penguin contributions to the decay amplitudes, which affect the extraction of fundamental CP phases from the measured CP asymmetries. Although the "penguin pollution" is doubly Cabibbo-suppressed, it could compete in size with current experimental errors. In this talk I present a calculation of the penguin contributions treating QCD effects with soft-collinear factorisation and compare method and results with the alternative approach employing flavour-SU(3) symmetry. As a novel feature, I present results for the penguin pollution in b→ c c d modes.