{"@context":"http://schema.org","@id":"https://doi.org/10.17182/hepdata.145998.v1","@reverse":{"isBasedOn":[{"@type":"ScholarlyArticle","identifier":{"@type":"PropertyValue","propertyID":"URL","value":"https://inspirehep.net/literature/2752118"}},{"@id":"https://doi.org/10.1103/PhysRevD.109.112013","@type":"JournalArticle"}]},"@type":"Dataset","additionalType":"Collection","author":[{"@type":"Organization","name":"TOTEM Collaboration"},{"@type":"Organization","name":"CMS Collaboration"}],"creator":[{"@type":"Organization","name":"TOTEM Collaboration"},{"@type":"Organization","name":"CMS Collaboration"}],"datePublished":"2024","description":"The central exclusive production of charged-hadron pairs in pp collisions at a centre-of-mass energy of 13 TeV is examined, based on data collected in a special high-$\\beta^*$ run of the LHC. The nonresonant continuum processes are studied with the invariant mass of the centrally produced two-pion system in the resonance-free region, $m_{\\pi^+\\pi^-}$$\\lt$ 0.7 GeV or $m_{\\pi^+\\pi^-}$$\\gt$ 1.8 GeV. Differential cross sections as functions of the azimuthal angle between the surviving protons, squared exchanged four-momenta, and $m_{\\pi^+\\pi^-}$ are measured in a wide region of scattered proton transverse momenta, between 0.2 and 0.8 GeV, and for pion rapidities $\\lvert y\\rvert$$\\lt$ 2. A rich structure of interactions related to double-pomeron exchange is observed. A parabolic minimum in the distribution of the two-proton azimuthal angle is observed for the first time. It can be interpreted as an effect of additional pomeron exchanges between the protons from the interference between the bare and the rescattered amplitudes. After model tuning, various physical quantities are determined that are related to the pomeron cross section, proton-pomeron and meson-pomeron form factors, pomeron trajectory and intercept, and coefficients of diffractive eigenstates of the proton.","hasPart":[{"@id":"https://doi.org/10.17182/hepdata.145998.v1/t1","@type":"Dataset","description":"Distributions of $\\mathrm{d}^3\\sigma / \\mathrm{d}p_\\mathrm{1,T} dp_\\mathrm{2,T}\\mathrm {d}\\phi$ as functions of $\\phi$ in the $\\pi^+\\pi^-$ nonresonant region ($0.35 < m <...","name":"Figures 9-10-11 15-16-17"},{"@id":"https://doi.org/10.17182/hepdata.145998.v1/t2","@type":"Dataset","description":"Distribution of $\\mathrm{d}^3\\sigma / \\mathrm{d}p_{1,T} \\mathrm{d}p_\\mathrm{2,T} \\mathrm{d}m$ as a function of $m$ for $\\pi^+\\pi^\u2212$ pairs in several $(p_\\mathrm{1,T}, p_\\mathrm{2,T})$ bins,...","name":"Figures 19-20-21"},{"@id":"https://doi.org/10.17182/hepdata.145998.v1/t3","@type":"Dataset","description":"Distribution of the squared momentum transfer of the virtual pion in several $(p_\\mathrm{1,T}, p_\\mathrm{2,T})$ bins, in units of $\\mu\\mathrm{b}/\\mathrm{GeV}^3$.","name":"Figures 22-23"},{"@id":"https://doi.org/10.17182/hepdata.145998.v1/t4","@type":"Dataset","description":"Dependence of the parameter $A$ on $(t_1, t_2)$.","name":"Figure 12 upper left"},{"@id":"https://doi.org/10.17182/hepdata.145998.v1/t5","@type":"Dataset","description":"Dependence of the parameter $R$ on $(t_1, t_2)$.","name":"Figure 12 upper right"},{"@id":"https://doi.org/10.17182/hepdata.145998.v1/t6","@type":"Dataset","description":"Dependence of the parameter $c$ on $(t_1, t_2)$.","name":"Figure 12 lower left"},{"@id":"https://doi.org/10.17182/hepdata.145998.v1/t7","@type":"Dataset","description":"Dependence of the parameter $R$ on the two scattered proton transverse momenta.","name":"Figure 12 lower right"},{"@id":"https://doi.org/10.17182/hepdata.145998.v1/t8","@type":"Dataset","description":"Correlation coefficients among values of best parameters for the two-channel model, in the case of the exponential parametrisation of the...","name":"Figure 14 left"},{"@id":"https://doi.org/10.17182/hepdata.145998.v1/t9","@type":"Dataset","description":"Correlation coefficients among values of best parameters for the two-channel model, in the case of the Orear-type parametrisation of the...","name":"Figure 14 centre"},{"@id":"https://doi.org/10.17182/hepdata.145998.v1/t10","@type":"Dataset","description":"Correlation coefficients among values of best parameters for the two-channel model, in the case of the power-law parametrisation of the...","name":"Figure 14 right"}],"identifier":[{"@type":"PropertyValue","propertyID":"HEPDataRecord","value":"https://www.hepdata.net/record/ins2752118?version=1"},{"@type":"PropertyValue","propertyID":"HEPDataRecordAlt","value":"https://www.hepdata.net/record/145998"}],"inLanguage":"en","name":"Nonresonant central exclusive production of charged-hadron pairs 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/ins2752118?version=1","version":1}