Using full simulation, the CEPC baseline detector reconstructs isolated photons with over 99% efficiency and purity above 1 GeV, reaching a 2.2% H to gamma gamma mass resolution after a geometry-based correction.
CEPC Precision of Electroweak Oblique Parameters and Weakly Interacting Dark Matter: the Fermionic Case
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abstract
Future electroweak precision measurements in the Circular Electron Positron Collider (CEPC) project would significantly improve the precision of electroweak oblique parameters. We evaluate the expected precision through global fits, and study the corresponding sensitivity to weakly interacting fermionic dark matter. Three models with electroweak multiplets in the dark sector are investigated as illuminating examples. We find that the CEPC data can probe up to TeV scales and explore some regions where direct detection cannot reach, especially when the models respect the custodial symmetry.
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2019 1verdicts
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Photon Reconstruction Performance at the CEPC baseline detector
Using full simulation, the CEPC baseline detector reconstructs isolated photons with over 99% efficiency and purity above 1 GeV, reaching a 2.2% H to gamma gamma mass resolution after a geometry-based correction.