Abstract
We present an angular analysis of the B^{+}→K^{*+}(→K_{S}^{0}π^{+})μ^{+}μ^{-} decay using 9 fb^{-1} of pp collision data collected with the LHCb experiment. For the first time, the full set of CP-averaged angular observables is measured in intervals of the dimuon invariant mass squared. Local deviations from standard model predictions are observed, similar to those in previous LHCb analyses of the isospin-partner B^{0}→K^{*0}μ^{+}μ^{-} decay. The global tension is dependent on which effective couplings are considered and on the choice of theory nuisance parameters.
Highlights
We present an angular analysis of the Bþ → KÃþð→ K0SπþÞμþμ− decay using 9 fb−1 of pp collision data collected with the LHCb experiment
Transitions between b quarks and s quarks with the emission of two charged leptons, lþl−, only proceed through loop-level processes. Such decays are sensitive to possible contributions from heavy mediators that are inaccessible to direct-production searches
A recent study [12] of the B0 → KÃ0μþμ− decay channel by the LHCb Collaboration confirmed the tension in the angular observables with respect to the standard model (SM) predictions
Summary
We present an angular analysis of the Bþ → KÃþð→ K0SπþÞμþμ− decay using 9 fb−1 of pp collision data collected with the LHCb experiment. A recent study [12] of the B0 → KÃ0μþμ− decay channel by the LHCb Collaboration confirmed the tension in the angular observables with respect to the SM predictions. The number of Bþ → KÃþμþμ− signal candidates from this fit is 737 Æ 34, where the uncertainty is statistical only.
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