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Sensitivity to millicharged particles in future proton-proton collisions at the LHC

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arxiv 2104.07151 v2 pith:E27YGWKE submitted 2021-04-14 hep-ex physics.ins-det

Sensitivity to millicharged particles in future proton-proton collisions at the LHC

classification hep-ex physics.ins-det
keywords detectorchargesdatasetparticlesdependingexpectedhighluminosity
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We report on the expected sensitivity of dedicated scintillator-based detectors at the LHC for elementary particles with charges much smaller than the electron charge. The dataset provided by a prototype scintillator-based detector is used to characterise the performance of the detector and provide an accurate background projection. Detector designs, including a novel slab detector configuration, are considered for the data taking period of the LHC to start in 2022 (Run 3) and for the high luminosity LHC. With the Run 3 dataset, the existence of new particles with masses between 10 MeV and 45 GeV could be excluded at 95% confidence level for charges between 0.003e and 0.3e, depending on their mass. With the high luminosity LHC dataset, the expected limits would reach between 10 MeV and 80 GeV for charges between 0.0018e and 0.3e, depending on their mass

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