1999/09/22 by I. I. Bigi, Bigi, I. I., A. I. Sanda +1 · 1 citation
Engineering · Physics and Astronomy · #Advanced Numerical Analysis Techniques #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #Manufacturing Process and Optimization #Robotic Mechanisms and Dynamics #hep-ph
paper · pdf · doi:10.48550/arxiv.hep-ph/9909479
20 pages, 1 embedded figure, LATEX; while the substance of this paper remains unchanged, the discussion has been extended in the interest of clarity and illustrated by one figure with 6 subfigures; some typos have been corrected and relevant papers added to the references
openalex publication_date 1999/09/22 · arxiv created 1999/11/07 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
A comprehensive program of \cp~studies in heavy flavour decays has to go beyond observing large \cp asymmetries in nonleptonic B decays and finding that the sum of the three angles of the KM triangle is consistent with 180∘. There are many more correlations between observables encoded in the KM matrix; those can be expressed through five KM triangles in addition to the one usually considered. To test the completeness of the KM description one has to obtain a highly overconstrained data set sensitive to \cal O(λ2) effects with λ= sin θC. Those fall into two categories: (i) Certain large angles agree to leading order only, yet differ in order λ2 in a characteristic way. (ii) Two observables angles are - for reasons specific to the KM ansatz - \cal O(λ2) and \cal O(λ4) thus generating an asymmetry of a few percent and of about 0.1 %, respectively. The former can be measured in Bs → ψη, ψϕ \em without hadronic uncertainty, the latter in Cabibbo suppressed D decays. The intervention of New Physics could boost these effects by an order of magnitude. A special case is provided by D+ → KS,Lπ+ vs. D- → KS,Lπ-. Finally, \cp~asymmetries involving D0 - D0 oscillations could reach observable levels only due to New Physics.