Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 6 of 6 for “"Lepton universality"”.
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Tests of lepton universality in $B^{0} \to K_{S}^{0} l^{+} l^{-}$ and $B^{+} \to K^{*+} l^{+} l^{-}$ decays at the LHCb experiment
… tests for novel physical processes which violate lepton universality. This dissertation presents new measurements of such ratios using $B^{0} \to K_{S}^{0} l^{+} l^{-}$ and $B^{+} \to K^{*+} l^{+} l^{-}$ decays, denoted $R^{-1}_{K_{S}^{0}}$ and $R^{-1}_{K^{*+}}$. These measurements used data from …
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Messung der qqlny-Endzustände der W-Paar-Produktion bei Schwerpunktsenergien von 183 GeV bis 202 GeV mit dem L3-Detektor bei LEP
… of the W-pair-production independent of the lepton flavor. In the events of this class one W-Boson decays into a lepton and the associated neutrino, the other W-Boson decays hadronicaly into two jets of particles. The so called "flavor blind selection" was used to determine the production …
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Testing Lepton Nonuniversality In Tau Neutrino Scattering
Recently hints of lepton flavor non-universality emerged in the BaBar and LHCb experiments. In this paper we propose tests of lepton universality in scattering. To parametrize the new physics we adopt an effective Lagrangian approach and consider the neutrino deep inelastic scattering processes tau …
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A MEASUREMENT OF Rμ = σ(W → μv)/σ(Z^0→ μ^+ μ^-) IN PP ̅ COLLISIONS AT √S = 1.8 TEV
… (95% CL) which is independent of the decay mode. Lepton universality is confirmed in this energy domain. All results are in agreement with standard model predictions.
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Topics in Proton Structure: BSM Answers to its Radius Puzzle and Lattice Subtleties within its Momentum Distribution
… moment discrepancy point to possible signs of lepton-universality violation. We introduce the context and background necessary to understand these two problems. And we analyze two suitable beyond-the-standard-model solutions, one vector-based and one scalar-based, which simultaneously solves …
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Search for a charged Higgs Boson in proton-proton collisions at the LHC using the ATLAS detector
… decaying hadronically ($\tau$+jets channel) or leptonically ($\tau$+lepton). The combination of the channels in this search excludes at 95$\%$ confidence level (CL) a branching fraction of $B(t \rightarrow \Hp b) \times B(\Hp \rightarrow \tau \nu) = 1-5 \%$ for the mass range $\mH = 90-160$ GeV. …