Köln 2025 – wissenschaftliches Programm
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HK: Fachverband Physik der Hadronen und Kerne
HK 49: Hadron Structure and Spectroscopy VI
HK 49.2: Vortrag
Donnerstag, 13. März 2025, 16:15–16:30, HS 3 Physik
A new formalism for calculating CP asymmetries in nonleptonic multibody B decays — •Leon Heuser1, Bastian Kubis1, Christoph Hanhart2, José R. Peláez3, Alba R. Torrecilla3, and Patrícia Magalhães4 — 1HISKP Universität Bonn, Bonn, Germany — 2FSZ Jülich, Jülich, Germany — 3Departamento de Física Teórica, Universidad Complutense de Madrid, Madrid, SPAIN — 4IFGW Universidade Estadual de Campinas, Sao Paulo, Brazil
We present a new method to construct the amplitude for hadronic multibody B decays that exploits the universality of pairwise hadronic final state interactions for small invariant masses between two of the final-state particles. This allows us to import the very accurate knowledge of such two-particle systems at low energies into the description of kinematic distributions for bottom hadrons in specific kinematic regions. We demonstrate the validity of this method by computing the CP asymmetry distributions and comparing to data.
Keywords: Final-state interaction; CP-Violation; B decay