2025/01/16 by K. De Bruyn, De Bruyn, Kristof, Robert Fleischer +3
Computer Science · #Computability, Logic, AI Algorithms #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #Parallel Computing and Optimization Techniques
paper · pdf · doi:10.48550/arxiv.2501.09414
openalex publication_date 2025/01/16 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Experimentally, the phases ϕd and ϕs are determined from CP asymmetry measurements in the "golden modes" Bd0→ J/ψKS0 and Bs0→ J/ψϕ. At leading order, the theoretical interpretation of these measurements is straightforward. However, to reach high precision determinations of ϕd and ϕs, which is essential in view of the searches for signs of beyond the SM physics, corrections from next-to-leading order effects need to be accounted for. These corrections primarily originate from so-called penguin topologies. Using the SU(3) flavour symmetry, these corrections can be determined using suitably chosen control modes. Recent new CP asymmetry measurements from LHCb in B→ DD and Belle-II in Bd0→ J/ψπ0 decays greatly improve our knowledge on the parameters describing the contribution from penguin topologies. These proceedings will discuss the current constraints on the penguin parameters in B→ J/ψX and B→ DD decays, provide corrected determinations for ϕd and ϕs, and highlight what can be expected at the end of the HL-LHC and Belle-II programmes.