{"@context":"http://schema.org","@id":"https://doi.org/10.17182/hepdata.139987.v1","@reverse":{"isBasedOn":[{"@type":"ScholarlyArticle","identifier":{"@type":"PropertyValue","propertyID":"URL","value":"https://inspirehep.net/literature/2654723"}},{"@id":"https://doi.org/10.1103/PhysRevD.108.092007","@type":"JournalArticle"}]},"@type":"Dataset","additionalType":"Collection","author":{"@type":"Organization","name":"ATLAS Collaboration"},"creator":{"@type":"Organization","name":"ATLAS Collaboration"},"datePublished":"2023","description":"A search for a new pseudoscalar boson produced in events with top quark pairs where the $a$ boson decays to a pair of muons is performed using $pp$ collision data at the LHC collected by the ATLAS detector at $\\sqrt{s} = 13$ TeV corresponding to an integrated luminosity of $139~\\mathrm{fb}^{-1}$. This search targets the final state where only one top quark decay yields an electron or muon, resulting in a signature with three leptons $e\\mu\\mu$ and $\\mu\\mu\\mu$. No significant excess of events above the Standard Model expectation is observed and upper limits are set on two signal models, $pp \\rightarrow t\\bar{t}a$ and $pp \\rightarrow t\\bar{t}$ with $t \\rightarrow H^\\pm b$, $H^\\pm \\rightarrow W^\\pm a$, where $a\\rightarrow\\mu\\mu$, in the mass ranges $15$ GeV $ < m_a < 72$ GeV and $120$ GeV $ \\leq m_{H^{\\pm}} \\leq 160$ GeV.","hasPart":[{"@id":"https://doi.org/10.17182/hepdata.139987.v1/t1","@type":"Dataset","description":"Comparison between data and expected background for the on-$Z$-boson control region in the $e\\mu\\mu$ final state. The bins correspond to...","name":"Table 1"},{"@id":"https://doi.org/10.17182/hepdata.139987.v1/t2","@type":"Dataset","description":"Comparison between data and expected background for the on-$Z$boson control region in the $\\mu\\mu\\mu$ final state. The bins correspond to...","name":"Table 2"},{"@id":"https://doi.org/10.17182/hepdata.139987.v1/t3","@type":"Dataset","description":"Di-muon mass distribution for the $e\\mu\\mu$ signal region for data and expected background. The expected signal distribution for $m_a =...","name":"Table 3"},{"@id":"https://doi.org/10.17182/hepdata.139987.v1/t4","@type":"Dataset","description":"Di-muon mass distribution for the $\\mu\\mu\\mu$ signal region for data and expected background. The expected signal distribution for $m_a =...","name":"Table 4"},{"@id":"https://doi.org/10.17182/hepdata.139987.v1/t5","@type":"Dataset","description":"Fit of the Double Crystal Ball width as a function of the $a$-boson mass in the $e\\mu\\mu$ channel.","name":"Table 5"},{"@id":"https://doi.org/10.17182/hepdata.139987.v1/t6","@type":"Dataset","description":"Expected and observed 95% CL upper limit on signal cross section as a function of $m_a$ for $t\\bar{t}a$.","name":"Table 6"},{"@id":"https://doi.org/10.17182/hepdata.139987.v1/t7","@type":"Dataset","description":"Expected and observed 95% CL upper limit on signal cross section as a function of $m_a$ for $H^{+}\\rightarrow aW$, considering...","name":"Table 7"},{"@id":"https://doi.org/10.17182/hepdata.139987.v1/t8","@type":"Dataset","description":"Expected and observed 95% CL upper limit on signal cross section as a function of $m_a$ for $H^{+}\\rightarrow aW$, considering...","name":"Table 8"},{"@id":"https://doi.org/10.17182/hepdata.139987.v1/t9","@type":"Dataset","description":"Expected and observed 95% CL upper limit on signal cross section as a function of $m_a$ for $H^{+}\\rightarrow aW$, considering...","name":"Table 9"},{"@id":"https://doi.org/10.17182/hepdata.139987.v1/t10","@type":"Dataset","description":"Comparison of the expected background with data in a region dominated by non-prompt background. The region is defined exactly like...","name":"Table 10"},{"@id":"https://doi.org/10.17182/hepdata.139987.v1/t11","@type":"Dataset","description":"Scan of the observed p-value as a function of $m_a$ for the background-only hypothesis.","name":"Table 11"},{"@id":"https://doi.org/10.17182/hepdata.139987.v1/t12","@type":"Dataset","description":"Scan of the observed p-value as a function of $m_a$ for the background-only hypothesis for $e\\mu\\mu$ channel.","name":"Table 12"},{"@id":"https://doi.org/10.17182/hepdata.139987.v1/t13","@type":"Dataset","description":"Scan of the observed p-value as a function of $m_a$ for the background-only hypothesis for $\\mu\\mu\\mu$ channel.","name":"Table 13"},{"@id":"https://doi.org/10.17182/hepdata.139987.v1/t14","@type":"Dataset","description":"Acceptance times efficiency for the $t\\bar{t}a$, $a\\rightarrow \\mu\\mu$ signal as a function of the $m_a$ hypothesis.","name":"Table 14"},{"@id":"https://doi.org/10.17182/hepdata.139987.v1/t15","@type":"Dataset","description":"Acceptance times efficiency for the $t \\rightarrow bH^+$, $H^+ \\rightarrow W^+ a$, $a\\rightarrow \\mu\\mu$ signal as a function of the...","name":"Table 15"},{"@id":"https://doi.org/10.17182/hepdata.139987.v1/t16","@type":"Dataset","description":"Acceptance times efficiency for the $t \\rightarrow bH^+ $, $H^+ \\rightarrow W^+ a$, $a\\rightarrow \\mu\\mu$ signal as a function of...","name":"Table 16"},{"@id":"https://doi.org/10.17182/hepdata.139987.v1/t17","@type":"Dataset","description":"Expected lower limits on $\\tan\\beta$ for the $t\\rightarrow H^{+}b, H^{+}\\rightarrow aW, a\\rightarrow\\mu\\mu$ signal in the context of the 2HDM as...","name":"Table 17"},{"@id":"https://doi.org/10.17182/hepdata.139987.v1/t18","@type":"Dataset","description":"Observed lower limits on $\\tan\\beta$ for the $t\\rightarrow H^{+}b, H^{+}\\rightarrow aW, a\\rightarrow\\mu\\mu$ signal in the context of the 2HDM as...","name":"Table 18"},{"@id":"https://doi.org/10.17182/hepdata.139987.v1/t19","@type":"Dataset","description":"Cutflow for two signal mass points for $t\\bar{t}a$, $m_{a} = 20$ GeV and $m_{a} = 60$ GeV, and one signal...","name":"Table 19"},{"@id":"https://doi.org/10.17182/hepdata.139987.v1/t20","@type":"Dataset","description":"Cutflow for the dominant backgrounds estimated from simulation ($t\\bar{t}Z$, $WZ$, $t\\bar{t}H$) and data, for the electron channel $e\\mu\\mu$. The yields...","name":"Table 20"},{"@id":"https://doi.org/10.17182/hepdata.139987.v1/t21","@type":"Dataset","description":"Cutflow for the signal mass point $t\\bar{t}a$, $m_{a} = 20$ GeV, as well as the dominant backgrounds estimated from simulation...","name":"Table 21"},{"@id":"https://doi.org/10.17182/hepdata.139987.v1/t22","@type":"Dataset","description":"Cutflow for the signal mass point $t\\bar{t}a$, $m_{a} = 60$ GeV, as well as the dominant backgrounds estimated from simulation...","name":"Table 22"},{"@id":"https://doi.org/10.17182/hepdata.139987.v1/t23","@type":"Dataset","description":"Cutflow for $H^+ \\rightarrow W a$ with $m_{H^{+}} = 120$ GeV, $m_{a} = 30$ GeV for the muon channel $\\mu\\mu\\mu$....","name":"Table 23"},{"@id":"https://doi.org/10.17182/hepdata.139987.v1/t24","@type":"Dataset","description":"Total yields in the $e\\mu\\mu$ and $\\mu\\mu\\mu$ signal regions for the expected background and data after the profile likelihood fit...","name":"Table 24"}],"identifier":[{"@type":"PropertyValue","propertyID":"HEPDataRecord","value":"https://www.hepdata.net/record/ins2654723?version=1"},{"@type":"PropertyValue","propertyID":"HEPDataRecordAlt","value":"https://www.hepdata.net/record/139987"}],"inLanguage":"en","name":"Search for a new pseudoscalar decaying into a pair of muons in events with a top-quark pair at $\\sqrt{s} = 13$~TeV with the ATLAS detector","provider":{"@type":"Organization","name":"HEPData"},"publisher":{"@type":"Organization","name":"HEPData"},"url":"https://www.hepdata.net/record/ins2654723?version=1","version":1}