{"@context":"http://schema.org","@id":"https://doi.org/10.17182/hepdata.167415.v2","@reverse":{"isBasedOn":[{"@type":"ScholarlyArticle","identifier":{"@type":"PropertyValue","propertyID":"URL","value":"https://inspirehep.net/literature/3150957"}}]},"@type":"Dataset","additionalType":"Collection","author":{"@type":"Organization","name":"CMS Collaboration"},"creator":{"@type":"Organization","name":"CMS Collaboration"},"datePublished":"2026","description":"A search is presented for a light charged Higgs boson H$^\\pm$ in top quark pair production ($\\mathrm{t\\bar{t}}$), where one of the top quarks decays to an H$^\\pm$ and a bottom quark, while the other decays to a W$^\\mp$ boson and a bottom quark. The H$^\\pm$ is assumed to decay into a charm and a strange quark, whereas the W$^\\mp$ boson decays into a charged lepton (electron or muon) and a neutrino. Results are reported based on proton-proton collision data at $\\sqrt{s}$ = 13 TeV, corresponding to an integrated luminosity of 138 fb$^{-1}$. The analysis probes H$^\\pm$ masses in the range 40 to 160 GeV using the invariant mass spectrum of the two light jets, where light jets are defined as jets that do not satisfy the bottom quark tagging requirement. The observed yield is found to be consistent with standard model predictions. Upper limits are set on the branching fraction $\\mathcal{B}$(t $\\to$ H$^\\pm$ b), with values in the range of 0.07$-$1.12% at 95% confidence level, under the assumption that $\\mathcal{B}$(H$^\\pm$ $\\to$ cs) = 100%. These are the first direct limits on charged Higgs bosons produced in top quark decays for masses between 40 and 50 GeV, and the most stringent limits to date in the 70$-$110 GeV range.","hasPart":[{"@id":"https://doi.org/10.17182/hepdata.167415.v2/t1","@type":"Dataset","description":"Figure 4. Post-fit event yields of the BDT categories after the background-only fit. For comparison, the potential signal yield with...","name":"Fig. 4 Post-fit event yields of the BDT categories"},{"@id":"https://doi.org/10.17182/hepdata.167415.v2/t2","@type":"Dataset","description":"Figure 5a. The post-fit mjj distributions for data and background processes in loose BDT categories are shown for combined Run~2...","name":"Fig. 5a $m_{jj}$ distribution for loose BDT cut"},{"@id":"https://doi.org/10.17182/hepdata.167415.v2/t3","@type":"Dataset","description":"Figure 5b. The post-fit mjj distributions for data and background processes in medium BDT categories are shown for combined Run~2...","name":"Fig. 5b $m_{jj}$ distribution for medium BDT cut"},{"@id":"https://doi.org/10.17182/hepdata.167415.v2/t4","@type":"Dataset","description":"Figure 5c. The post-fit mjj distributions for data and background processes in tight BDT categories are shown for combined Run~2...","name":"Fig. 5c $m_{jj}$ distribution for tight BDT cut"},{"@id":"https://doi.org/10.17182/hepdata.167415.v2/t5","@type":"Dataset","description":"Figure 6. Expected and observed upper limits at 95% CL on the branching fraction B($t$ $\\to$ $H^+b$) obtained using the...","name":"Fig. 6 Limits on $\\mathrm{H}^\\pm$"},{"@id":"https://doi.org/10.17182/hepdata.167415.v2/t6","@type":"Dataset","description":"Additional material: Expected and observed upper limits at 95% CL on the branching fraction B($t$ $\\to$ $H^+b$) obtained using the...","name":"Additional material: Limits on $\\mathrm{H}^\\pm$ in $\\mu$+jets"},{"@id":"https://doi.org/10.17182/hepdata.167415.v2/t7","@type":"Dataset","description":"Additional material: Expected and observed upper limits at 95% CL on the branching fraction B($t$ $\\to$ $H^+b$) obtained using the...","name":"Additional material: Limits on $\\mathrm{H}^\\pm$ in $e$+jets"}],"identifier":[{"@type":"PropertyValue","propertyID":"HEPDataRecord","value":"https://www.hepdata.net/record/ins3150957?version=2"},{"@type":"PropertyValue","propertyID":"HEPDataRecordAlt","value":"https://www.hepdata.net/record/167415"}],"inLanguage":"en","name":"Search for light charged Higgs bosons decaying to charm and strange quarks in $\\mathrm{t\\bar{t}}$ events 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/ins3150957?version=2","version":2}