Measurement of the time-integrated mixing probability chi_d with a semileptonic double-tagging strategy and 34.6 fb^-1 of Belle II collision data
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Authors | Florian Bernlochner, Jochen Dingfelder, Stephan Duell, Peter Lewis |
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Date | April 6, 2021 |
Belle II Number | BELLE2-CONF-PH-2021-004 |
Abstract | We present a first measurement of the time-integrated mixing probability chi_d using Belle II collision data corresponding to the integrated luminosity of 34.6 fb^-1. We reconstruct pairs of B mesons both decaying in semileptonic final states. Using a novel extraction methodology, we measure 0.192 +- 0.010 (stat.) +- 0.016 (syst.), which is compatible with existing indirect and direct determinations. |
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