Search for the Lepton Flavour Violating Decay in Upsilon(3S) ->emu

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dc.contributor.author Tasneem, Nafisa
dc.date.accessioned 2017-09-12T20:15:45Z
dc.date.available 2017-09-12T20:15:45Z
dc.date.copyright 2017 en_US
dc.date.issued 2017-09-12
dc.identifier.uri https://dspace.library.uvic.ca//handle/1828/8560
dc.description.abstract Charged lepton flavour violating processes are highly suppressed in the standard model, but they are predicted to be enhanced in several new physics extensions including supersymmetry and models with leptoquarks or compositeness. Data collected with the BaBar detector at the SLAC PEP-II e$^+$e$^-$ asymmetric collider at a centre-of-mass energy of 10.36~GeV were used to search for electron-muon flavor violation in $\Upsilon (3S)\rightarrow e^{\pm}\mu^{\pm}$ decays. The search was conducted using a data sample in which 118 million $\Upsilon (3S)$ mesons were produced, corresponding to an integrated luminosity of 27~$fb^{-1}$. There is no evidence of a signal in the $\Upsilon (3S)$ data and we report our results as upper limits on $\mathcal{B}(\Upsilon(3S)\rightarrow e^{\pm}\mu^{\mp})<3.6\times10^{-7}\mathrm{at~ 90\%~ CL}$. en_US
dc.language English eng
dc.language.iso en en_US
dc.rights Available to the World Wide Web en_US
dc.subject Lepton Flavour Violating Decay en_US
dc.subject Upsilon decay en_US
dc.subject New Physics, Beyond Standard Model en_US
dc.title Search for the Lepton Flavour Violating Decay in Upsilon(3S) ->emu en_US
dc.type Thesis en_US
dc.contributor.supervisor Roney, J. Michael (John Michael)
dc.degree.department Department of Physics and Astronomy en_US
dc.degree.level Doctor of Philosophy Ph.D. en_US
dc.description.scholarlevel Graduate en_US

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