Sensitivities to a Light Scalar Particle Using Muon Decay, Kaon Decay, and Electron-Positron Annihilation

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dc.contributor.author Lange, Nicholas
dc.date.accessioned 2015-12-21T21:58:14Z
dc.date.available 2015-12-21T21:58:14Z
dc.date.copyright 2015 en_US
dc.date.issued 2015-12-21
dc.identifier.uri http://hdl.handle.net/1828/6971
dc.description.abstract There are several anomalies within the Standard Model of particle physics that may be explained by means of light new physics. These may be associated with muons, with the gyromagnetic ratio of the muon being different from theory at the level of 3.4σ, and with the 7σ muonic Hydrogen proton radius extraction. Previous, current, and new experiments may be able to place stringent limits on the existence of a new scalar force, with a coupling to leptons proportional to their mass. We investigate the sensitivity to the parameter space of the muon decay experiment Mu3e, the kaon decay experiments NA48/2 and NA62, and the experiments at asymmetric electron-positron colliders, BaBar, Belle, Belle2. Using Monte Carlo techniques to generate events for processes corresponding to each experiment, we find that these experiments could be sensitive to muonic couplings down to 10^−5, and over a wide mass range of 10 MeV − 3.5 GeV, fully covering the parameter space relevant for explanations of these anomalies. The possibility exists to later extend to masses up to 10 GeV. en_US
dc.language English eng
dc.language.iso en en_US
dc.rights Available to the World Wide Web en_US
dc.subject particle physics en_US
dc.subject particle phenomenology en_US
dc.subject muon en_US
dc.title Sensitivities to a Light Scalar Particle Using Muon Decay, Kaon Decay, and Electron-Positron Annihilation en_US
dc.type Thesis en_US
dc.contributor.supervisor Pospelov, Maxim
dc.degree.department Department of Physics and Astronomy en_US
dc.degree.level Master of Science M.Sc. en_US
dc.description.scholarlevel Graduate en_US

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