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Si us plau utilitzeu sempre aquest identificador per citar o enllaçar aquest document: https://hdl.handle.net/2445/132879
Measurement of the Semileptonic CP Asymmetry in B0-¯B0 Mixing
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The semileptonic C P asymmetry in B 0 - ¯ B 0 mixing, a d sl , is measured in proton-proton collision data, corresponding to an integrated luminosity of 3.0 fb − 1 , recorded by the LHCb experiment. Semileptonic B 0 decays are reconstructed in the inclusive final states D − μ + and D * − μ + , where the D − meson decays into the K + π − π − final state and the D * − meson into the ¯ D 0 ( → K + π − ) π − final state. The asymmetry between the numbers of D ( * ) − μ + and D ( * ) + μ − decays is measured as a function of the decay time of the B 0 mesons. The C P asymmetry is measured to be a d sl = ( − 0.02 ± 0.19 ± 0.30 ) % , where the first uncertainty is statistical and the second systematic. This is the most precise measurement of a d sl to date and is consistent with the prediction from the standard model.
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BADALOV, Alexey, et al. Measurement of the Semileptonic CP Asymmetry in B0-¯B0 Mixing. Physical Review Letters. 2015. Vol. 114, num. 4, pags. 041601. ISSN 0031-9007. [consulted: 22 of May of 2026]. Available at: https://hdl.handle.net/2445/132879