The charmless three-body decays B0(s) → K0S h+ h′− (where h(′) = π, K) are analysed using a sample of pp collision data recorded by the LHCb experiment, corresponding to an integrated luminosity of 3 fb^−1. The branching fractions are measured relative to that of the B0 → K0S π+ π− decay, and are determined to be: B(B0 → K0S K± π∓)/B(B0 → K0S K+ π−) = 0.123 ± 0.009(stat) ± 0.015(syst), B(B0 → K0S K+ K−)/B(B0 → K0S π+ π−) = 0.549 ± 0.018(stat) ± 0.033(syst), B(B0s → K0S π+ π−)/B(B0 → K0S π+ π−) = 0.191 ± 0.027(stat) ± 0.031(syst) ± 0.011(f_s/f_d), B(B0s → K0S K± π∓)/B(B0 → K0S π+ π−) = 1.70 ± 0.07(stat) ± 0.11(syst) ± 0.10(f_s/f_d), B(B0s → K0S K+ K−)/B(B0 → K0S π+ π−) ∈ [0.008−0.051] at 90% confidence level, where f_s/f_d represents the ratio of hadronisation fractions of the B0s and B0 mesons.

Updated Branching Fraction Measurements of B0(s) → K0S h+ h′− Decays

Capriotti, L.;
2017

Abstract

The charmless three-body decays B0(s) → K0S h+ h′− (where h(′) = π, K) are analysed using a sample of pp collision data recorded by the LHCb experiment, corresponding to an integrated luminosity of 3 fb^−1. The branching fractions are measured relative to that of the B0 → K0S π+ π− decay, and are determined to be: B(B0 → K0S K± π∓)/B(B0 → K0S K+ π−) = 0.123 ± 0.009(stat) ± 0.015(syst), B(B0 → K0S K+ K−)/B(B0 → K0S π+ π−) = 0.549 ± 0.018(stat) ± 0.033(syst), B(B0s → K0S π+ π−)/B(B0 → K0S π+ π−) = 0.191 ± 0.027(stat) ± 0.031(syst) ± 0.011(f_s/f_d), B(B0s → K0S K± π∓)/B(B0 → K0S π+ π−) = 1.70 ± 0.07(stat) ± 0.11(syst) ± 0.10(f_s/f_d), B(B0s → K0S K+ K−)/B(B0 → K0S π+ π−) ∈ [0.008−0.051] at 90% confidence level, where f_s/f_d represents the ratio of hadronisation fractions of the B0s and B0 mesons.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11577/3582741
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