{"@context":"http://schema.org","@id":"https://doi.org/10.17182/hepdata.90457.v1","@reverse":{"isBasedOn":[{"@type":"ScholarlyArticle","identifier":{"@type":"PropertyValue","propertyID":"URL","value":"https://inspirehep.net/literature/1763898"}},{"@id":"https://doi.org/10.1140/epjc/s10052-020-7733-0","@type":"JournalArticle"}]},"@type":"Dataset","additionalType":"Collection","author":{"@type":"Organization","name":"LHCb Collaboration"},"creator":{"@type":"Organization","name":"LHCb Collaboration"},"datePublished":"2020","description":"CERN-LHC. Using a data sample corresponding to an integrated luminosity of $2.0\\,fb^{-1}$, collected by the LHCb experiment, the production of the $\\eta_c(1S)$ state in proton-proton collisions at a centre-of-mass energy of $\\sqrt{s}=13 \\text{ TeV}$ is studied in the rapidity range ${2.0 < y < 4.5}$ and in the transverse momentum range ${6.5 < p_{T} < 14.0\\text{ GeV}}$. The cross-section for prompt production of $\\eta_c(1S)$ mesons relative to that of the ${J/\\psi}$ meson is measured using the $p\\bar{p}$ decay mode and is found to be ${\\sigma_{\\eta_c(1S)}/\\sigma_{J/\\psi} = 1.69 \\pm 0.15 \\pm 0.10 \\pm 0.18}$. The quoted uncertainties are, in order, statistical, systematic and due to uncertainties on the branching fractions of the ${J/\\psi\\to p \\bar{p}}$ and ${\\eta_c\\to p \\bar{p}}$ decays. The prompt $\\eta_c(1S)$  production cross-section is determined to be ${\\sigma_{\\eta_c(1S)} = 1.26 \\pm 0.11\\pm 0.08 \\pm 0.14 \\,\\mu b}$, where the last uncertainty includes that on the ${J/\\psi}$ meson cross-section. The ratio of the branching fractions of $b$-hadron decays to the $\\eta_c(1S)$ and ${J/\\psi}$ states is measured to be ${\\mathcal{B}_{b\\to\\eta_c X}/\\mathcal{B}_{b\\to J/\\psi X} = 0.48 \\pm 0.03 \\pm 0.03 \\pm 0.05}$, where the last uncertainty is due to those on the branching fractions of the ${J/\\psi \\to p \\bar{p}}$ and ${\\eta_c\\to p \\bar{p}}$ decays. The difference between the ${J/\\psi}$ and $\\eta_c(1S)$ masses is also determined to be ${113.0 \\pm 0.7 \\pm 0.1\\text{ MeV}}$, which is the most precise single measurement of this quantity to date.","hasPart":[{"@id":"https://doi.org/10.17182/hepdata.90457.v1/t1","@type":"Dataset","description":"Relative $\\eta_c$ to $J/\\psi$ differential production cross-sections for prompt production. The uncertainties are statistical, systematic, and due to the ${\\eta_c\\to...","name":"Table 1"},{"@id":"https://doi.org/10.17182/hepdata.90457.v1/t2","@type":"Dataset","description":"Differential production cross-sections of $\\eta_c$ for prompt production. The uncertainties are statistical, systematic, and due to the $\\eta_c\\to p \\bar{p}$...","name":"Table 2"},{"@id":"https://doi.org/10.17182/hepdata.90457.v1/t3","@type":"Dataset","description":"Relative $\\eta_c$ to $J/\\psi$ differential production cross-sections for production in $b$-hadron inclusive decays. The uncertainties are statistical, systematic, and due...","name":"Table 3"},{"@id":"https://doi.org/10.17182/hepdata.90457.v1/t4","@type":"Dataset","description":"Differential production cross-sections of $\\eta_c$ for production in $b$-hadron inclusive decays. The uncertainties are statistical, systematic, and due to the...","name":"Table 4"}],"identifier":[{"@type":"PropertyValue","propertyID":"HEPDataRecord","value":"https://www.hepdata.net/record/ins1763898?version=1"},{"@type":"PropertyValue","propertyID":"HEPDataRecordAlt","value":"https://www.hepdata.net/record/90457"}],"inLanguage":"en","name":"Measurement of the $\\eta_c(1S)$ production cross-section in $pp$ collisions at $\\sqrt{s} = 13$ TeV","provider":{"@type":"Organization","name":"HEPData"},"publisher":{"@type":"Organization","name":"HEPData"},"url":"https://www.hepdata.net/record/ins1763898?version=1","version":1}