{"@context":"http://schema.org","@id":"https://doi.org/10.17182/hepdata.77815.v1","@reverse":{"isBasedOn":[{"@type":"ScholarlyArticle","identifier":{"@type":"PropertyValue","propertyID":"URL","value":"https://inspirehep.net/literature/1599846"}},{"@id":"https://doi.org/10.1007/JHEP08(2017)055","@type":"JournalArticle"}]},"@type":"Dataset","additionalType":"Collection","author":{"@type":"Organization","name":"LHCb Collaboration"},"creator":{"@type":"Organization","name":"LHCb Collaboration"},"datePublished":"2017","description":"CERN-LHC. A test of lepton universality, performed by measuring the ratio of the branching fractions of the $B^{0} \\rightarrow K^{*0}\\mu^{+}\\mu^{-}$ and $B^{0} \\rightarrow K^{*0}e^{+}e^{-}$ decays, $R_{K^{*0}}$, is presented. The $K^* 892^{0}$ meson is reconstructed in the final state $K^{+}\\pi^{-}$, which is required to have an invariant mass within $100\\mathrm{\\,MeV/}c^2$ of the known $K^{*}(892)^{0}$ mass. The analysis is performed using proton-proton collision data, corresponding to an integrated luminosity of about $3\\mathrm{\\,fb}^{-1}$, collected by the LHCb experiment at centre-of-mass energies of $7$ and $8\\mathrm{\\,TeV}$. The ratio is measured in two regions of the dilepton invariant mass squared, $q^{2}$, to be $$R_{K^{*0}} = \\begin{cases} 0.66~^{+~0.11}_{-~0.07}\\mathrm{\\,(stat)} \\pm 0.03\\mathrm{\\,(syst)} &\\textrm{for } 0.045 < q^{2} < 1.1~\\mathrm{\\,GeV^2/}c^4, \\\\ 0.69~^{+~0.11}_{-~0.07}\\mathrm{\\,(stat)} \\pm 0.05\\mathrm{\\,(syst)} & \\textrm{for } 1.1\\phantom{00} < q^{2} < 6.0~\\mathrm{\\,GeV^2/}c^4 . \\end{cases}$$ The corresponding 95.4% confidence level intervals are [0.52, 0.89] and [0.53, 0.94]. The results, which represent the most precise measurements of $R_{K^{*0}}$ to date, are compatible with the Standard Model expectations at the level of 2.1-2.3 and 2.4-2.5 standard deviations in the two $q^{2}$ regions, respectively. This record presents the combined distributions of the $R_{K^{*0}}$ delta log-likelihood (for the three electron  trigger categories detailed in the paper) in the two regions of dilepton invariant mass squared.","hasPart":[{"@id":"https://doi.org/10.17182/hepdata.77815.v1/t1","@type":"Dataset","description":"Distributions of the $R(K^{*0})$ delta log-likelihood, $-(\\ln L - \\ln L_{best})$, for the three trigger categories combined in the low-q2...","name":"Table 1"},{"@id":"https://doi.org/10.17182/hepdata.77815.v1/t2","@type":"Dataset","description":"Distributions of the $R(K^{*0})$ delta log-likelihood, $-(\\ln L - \\ln L_{best})$, for the three trigger categories combined in the central-q2...","name":"Table 2"}],"identifier":[{"@type":"PropertyValue","propertyID":"HEPDataRecord","value":"https://www.hepdata.net/record/ins1599846?version=1"},{"@type":"PropertyValue","propertyID":"HEPDataRecordAlt","value":"https://www.hepdata.net/record/77815"}],"inLanguage":"en","name":"Test of lepton universality with $B^{0} \\rightarrow K^{*0}\\ell^{+}\\ell^{-}$ decays","provider":{"@type":"Organization","name":"HEPData"},"publisher":{"@type":"Organization","name":"HEPData"},"url":"https://www.hepdata.net/record/ins1599846?version=1","version":1}