{"@context":"http://schema.org","@id":"https://doi.org/10.17182/hepdata.88919.v1","@reverse":{"isBasedOn":[{"@type":"ScholarlyArticle","identifier":{"@type":"PropertyValue","propertyID":"URL","value":"https://inspirehep.net/literature/1718338"}},{"@id":"https://doi.org/10.1103/PhysRevLett.122.132001","@type":"JournalArticle"}]},"@type":"Dataset","additionalType":"Collection","author":{"@type":"Organization","name":"CMS Collaboration"},"creator":{"@type":"Organization","name":"CMS Collaboration"},"datePublished":"2019","description":"CERN-LHC. Signals consistent with the $B_{c}^{+}(2S)$ and $B_{c}^{+*}(2S)$ states are observed in proton-proton collisions at $\\sqrt{s} = 13$ TeV, in an event sample corresponding to an integrated luminosity of $143$ fb$^{-1}$, collected by the CMS experiment during the 2015--2018 LHC running periods. These excited $\\bar{b}c$ states are observed in the $B_{c}^{+}\\pi\\pi$ invariant mass spectrum, with the ground state $B_{c}^{+}$ reconstructed through its decay to $J/\\psi\\pi$. The two states are reconstructed as two well-resolved peaks, separated in mass by $29.1 \\pm 1.5(stat) \\pm 0.7(syst)$ MeV, and are observed with a significance exceeding five standard deviations. The mass of the $B_{c}^{+}(2S)$ meson is measured to be $6871.0 \\pm 1.2(stat)  \\pm 0.8(syst) \\pm 0.8 \\, (B_{c})$ MeV, where the last term corresponds to the uncertainty in the world-average $B_{c}^{+}$ mass.","hasPart":[{"@id":"https://doi.org/10.17182/hepdata.88919.v1/t1","@type":"Dataset","description":"Observation of the Bc(2S) and Bc(2S)* states and measurement of the Bc(2S) mass.","name":"Table 1"},{"@id":"https://doi.org/10.17182/hepdata.88919.v1/t2","@type":"Dataset","description":"Observation of the Bc(2S) and Bc(2S)* states and measurement of the Bc(2S) mass.","name":"Table 2"}],"identifier":[{"@type":"PropertyValue","propertyID":"HEPDataRecord","value":"https://www.hepdata.net/record/ins1718338?version=1"},{"@type":"PropertyValue","propertyID":"HEPDataRecordAlt","value":"https://www.hepdata.net/record/88919"}],"inLanguage":"en","name":"Observation of Two Excited B$^+_\\mathrm{c}$ States and Measurement of the B$^+_\\mathrm{c}$(2S) Mass in pp Collisions at $\\sqrt{s} =$ 13 TeV","provider":{"@type":"Organization","name":"HEPData"},"publisher":{"@type":"Organization","name":"HEPData"},"url":"https://www.hepdata.net/record/ins1718338?version=1","version":1}