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Aachen 2019 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 63: Flavorphysik II

T 63.6: Vortrag

Mittwoch, 27. März 2019, 17:15–17:30, S15

Search for Bs0 → ψ(2S) KS0 decays at the LHCb experimentVukan Jevtic, •Jasper Lammering, and Patrick Mackowiak — Experimentelle Physik 5, TU Dortmund

The decay Bs0 → ψ(2S) KS0 has not been observed yet but is predicted by the Standard Model. In a previous analysis, where CP-violation was measured in B0 → ψ(2S) KS0, performed by LHCb using the Run I dataset, a hint for the Bs decay has been seen. Therefore the observation is expected by analyzing more data and developing a specialized selection for such decays. In order to cancel systematic uncertainties, the ratio of branching fractions B(Bs0 → ψ(2S) KS0)/B(B0 → ψ(2S) KS0) is measured. In this talk, the current status of the analysis using the complete LHCb dataset corresponding to an integrated luminosity of 9 fb−1 is presented.

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