{"@context":"http://schema.org","@id":"https://doi.org/10.17182/hepdata.146018.v1","@reverse":{"isBasedOn":[{"@type":"ScholarlyArticle","identifier":{"@type":"PropertyValue","propertyID":"URL","value":"https://inspirehep.net/literature/2747130"}},{"@id":"https://doi.org/10.1088/1361-6633/ad4e65","@type":"JournalArticle"}]},"@type":"Dataset","additionalType":"Collection","author":{"@type":"Organization","name":"CMS Collaboration"},"creator":{"@type":"Organization","name":"CMS Collaboration"},"datePublished":"2024","description":"A test of lepton flavor universality in $\\text{B}^\\pm \\to\\text{K}^\\pm\\mu^+\\mu^-$ and $\\text{B}^\\pm \\to\\text{K}^\\pm\\text{e}^+\\text{e}^-$ decays, as well as a measurement of differential and integrated branching fractions of a nonresonant$\\text{B}^\\pm \\to \\text{K}^\\pm\\mu^+\\mu^-$ decay are presented. The analysis is made possible by a dedicated data set of proton-proton collisions at $\\sqrt{s} = 13$ TeV recorded in 2018, by the CMS experiment at the LHC, using a special high-rate data stream designed for collecting about 10 billion unbiased b hadron decays. The ratio of the branching fractions $\\mathcal{B}(\\text{B}^\\pm \\to\\text{K}^\\pm\\mu^+\\mu^-)$ to $\\mathcal{B}(\\text{B}^\\pm \\to\\text{K}^\\pm\\text{e}^+\\text{e}^-)$ is determined from the measured double ratio $R(\\text{K})$ of these decays to the respective branching fractions of the $\\text{B}^\\pm\\to\\text{J}\\psi\\text{K}^\\pm$ with $\\text{J}\\psi\\to\\mu^+\\mu^-$ and $\\text{e}^+\\text{e}^-$ decays, which allow for significant cancellation of systematic uncertainties. The ratio $R(\\text{K})$ is measured in the range $1.1 <q^2 < 6.0 \\text{GeV}^2$, where $q$ is the invariant mass of the lepton pair, and is found to be $R(\\text{K})=0.78^{+0.47}_{-0.23}$, in agreement with the standard model expectation $R(\\text{K}) \\approx 1$. This measurement is limited by the statistical precision of the electron channel. The integrated branching fraction in the same $q^2$ range, $\\mathcal{B}(\\text{B}^\\pm \\to \\text{K}^\\pm\\mu^+\\mu^-) = (12.42 \\pm0.68)\\times 10^{-8}$, is consistent with the present world-average value and has a comparable precision.","hasPart":[{"@id":"https://doi.org/10.17182/hepdata.146018.v1/t1","@type":"Dataset","description":"The differential $\\text{B}^+ \\to \\text{K}^+\\mu^+\\mu^-$ branching fraction measured in the individual $q^2$ bins. The uncertainties in the yields are statistical...","name":"q^2 bin yields & BF"},{"@id":"https://doi.org/10.17182/hepdata.146018.v1/t2","@type":"Dataset","description":"Differential branching fraction $d\\mathcal{B}/dq^2$, with theoretical predictions obtained with the HEPFiT, SuperIso, Flavio, and EOS packages. The HEPFiT predictions are...","name":"Differential BF"},{"@id":"https://doi.org/10.17182/hepdata.146018.v1/t3","@type":"Dataset","description":"Relative uncertainties in the differential branching fraction measurement of $\\mathrm{B}^+\\to\\mathrm{K}^+\\mu^+\\mu^-$ per $q^2$ bin.","name":"Uncertainty components"},{"@id":"https://doi.org/10.17182/hepdata.146018.v1/t4","@type":"Dataset","description":"Correlation matrix for the differential branching fraction extraction between different $q^2$ bins in the simultaneous fit.","name":"Correlation matrix"},{"@id":"https://doi.org/10.17182/hepdata.146018.v1/t5","@type":"Dataset","description":"The product of acceptance and efficiency ($A\\epsilon$) of the $\\mathcal{B}(\\mathrm{B}^+\\to\\mathrm{K}^+\\mu^+\\mu^-)$ channel, as a function of the muon pair $q^2$, as...","name":"Efficiency"},{"@id":"https://doi.org/10.17182/hepdata.146018.v1/t6","@type":"Dataset","description":"Same as Table 5, but for the bins containing the J$\\psi$ and $\\psi$(2S) resonances.","name":"Resonance efficiency"},{"@id":"https://doi.org/10.17182/hepdata.146018.v1/t7","@type":"Dataset","description":"Integrated branching fraction $\\mathcal{B}(\\mathrm{B}^\\pm \\to \\mathrm{K}^\\pm\\mu^+\\mu^-)$ in the low-$q^2$ region.","name":"Integrated BF"},{"@id":"https://doi.org/10.17182/hepdata.146018.v1/t8","@type":"Dataset","description":"Ratio of branching fractions $\\mathcal{B}(\\text{B}^\\pm \\to \\text{K}^\\pm\\mu^+\\mu^-)$ to $\\mathcal{B}(\\text{B}^\\pm \\to \\text{K}^\\pm\\text{e}^+\\text{e}^-)$, determined from the measured double ratio $R$(K) of these...","name":"R(K) measurement"},{"@id":"https://doi.org/10.17182/hepdata.146018.v1/t9","@type":"Dataset","description":"Negative log likelihood function from the fit profiled as a function of the inverse ratio $R(\\mathrm{K})^{-1}$.","name":"Likelihood"}],"identifier":[{"@type":"PropertyValue","propertyID":"HEPDataRecord","value":"https://www.hepdata.net/record/ins2747130?version=1"},{"@type":"PropertyValue","propertyID":"HEPDataRecordAlt","value":"https://www.hepdata.net/record/146018"}],"inLanguage":"en","name":"Test of lepton flavor universality in B$^{\\pm}$$\\to$ K$^{\\pm}\\mu^+\\mu^-$ and B$^{\\pm}$$\\to$ K$^{\\pm}$e$^+$e$^-$ decays in proton-proton collisions at $\\sqrt{s}$ = 13 TeV","provider":{"@type":"Organization","name":"HEPData"},"publisher":{"@type":"Organization","name":"HEPData"},"url":"https://www.hepdata.net/record/ins2747130?version=1","version":1}