Göttingen 2025 – wissenschaftliches Programm

Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe

T: Fachverband Teilchenphysik

T 40: Methods in Particle Physics II (Misc.)

T 40.4: Vortrag

Dienstag, 1. April 2025, 17:00–17:15, VG 4.101

Study of the intrinsic detection asymmetry at Belle II for a generic search for matter-antimatter asymmetries — •Beatrice Locatelli, Thomas Lück, Nikolai Krug, and Thomas Kuhr — Ludwig-Maximilians-Universität München Germany

To explain the abundance of matter over antimatter observed in the universe, the CP symmetry must be broken. The Standard Model accounts for some CP violation, but that is not sufficient to explain the magnitude of the observed baryon asymmetry. Therefore, it is crucial to search for new manifestation of CP violation that might have been overlooked so far.

The main source of background in the measurement of CP asymmetries is the intrinsic detector asymmetry. For this reason, it is essential to have a precise knowledge of the asymmetry in particle detection, which can be done by studying the different reconstruction efficiencies between particles and antiparticles. The final goal is to formulate a model-independent analysis strategy that can be applied to detect asymmetries in B-decays at Belle II.

Keywords: detector asymmetry; CP violation; reconstruction efficiency; baryon asymmetry