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 20 of 30 for “"parity violation"”.
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Measurement of parity violation in thermal neutron capture on a proton
… NPDGamma experiment is measuring the directional parity violating asymmetry in the emission of gamma rays from the capture of cold neutrons on protons. The asymmetry can be related in a straightforward way to effective couplings within an appropriate NN weak interaction theory, such as chiral …
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A scaler-based data acquisition system for measuring parity violation asymmetry in deep inelastic scattering
An experiment that measured the parity violating (PV) asymmetry Ad in e- 2H deep inelastic scattering (DIS) at Q2 ~ 1.10 and 1.90 (GeV/c) 2 and XB ~ 0.3 was completed in experimental Hall A at the Thomas Jefferson National Accelerator Facility. The asymmetry can be used to extract the neutral weak …
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Precision measurement of the weak charge of the proton and parity violation in the N → ∆ transition
… charge of the proton. Qweak measured the parity-violating asymmetry in elastic electron-proton scattering at an extreme forward angle (Q² = 0.0249 (GeV/c)² ). From the data gathered via the 1.16 GeV 180 μA longitudinally polarized electron beam scattering off the unpolarized photons in the …
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Measuring the Weak Charge of the Proton and the Hadronic Parity Violation of the N →Δ Transition
… the proton, QpW, via an asymmetry measurement of parity-violating elastic electron-proton scattering at low four momentum transfer to a precision of 4%. QpW has firm Standard Model prediction and is related to the weak mixing angle, sin20W, a well-defined Standard Model parameter. Qweak will probe …
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Search for Squark Production in R-Parity Violating Supersymmetry at HERA
… squarks in supersymmetric models which allow R-parity violation. Electron-proton and positron-proton collisions taken at a centre of mass energy of 320 GeV have been investigated using the H1 detector at HERA. No deviation from the Standard Model has been found and exclusion limits in various …
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Beauty meson to double open charm decays with the LHCb detector
… decays are improved. Secondly, the charge-parity asymmetries ($\mathcal{A}^{CP}$) and branching fractions of decays of the $B^-$ meson to two charm mesons are measured. No evidence of charge-parity violation is seen, but the first measurements of $\mathcal{A}^{CP}(B^- \rightarrow …
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Search For Trilepton Resonances From R-Parity Violating Chargino Decays In The B−l Mssm
… Supersymmetric Standard Model with spontaneous R-parity violation. The chargino and neutralino each decay via R-parity violating couplings to a charged lepton or neutrino and a W, Z, or Higgs boson. This analysis searches for resonances in the trilepton invariant mass spectrum, targeting events …
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Accounting for roll-over risk in the pricing of caps and floors
… derivatives. This was as a result of a violation in spot-forward parity relationships thereby prompting markets to realise the presence of a new type of risk and subsequently the need for a multi-curve pricing framework. The roll-over risk framework is one that accounts for liquidity …
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Measurement Of Neutron Radius In Lead By Parity Violating Scattering Flash ADC DAQ
… dissertation reports the experiment PREx, a parity violation experiment which is designed to measure the neutron radius in <sup>208</sup>Pb. PREx is performed in hall A of Thomas Jefferson National Accelerator Facility from March 19th to June 21st. Longitudionally polarized electrons at …
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High precision measurement of the proton elastic form factor ratio at low Q²
… radius and the strangeness form factors from parity violation experiments.
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Analysis of JLab E12-14-012 Ti(e,e′p) Data and Determination of the Ti Spectral Function
… of uncertainty in measuring possible Charge-Parity Violation (CPV) in the neutrino (ν) sector and decoupling background like matter-effects. This thesis summarizes the exclusive electron scattering measurement of the Jefferson Lab E12-14-012 experiment. The E12-14-012 experiment goals are to …
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Constraining Beam Backgrounds and Analyzing the Detector Response in a Test Beam With the Nova Experiment
… is to determine the mass hierarchy, probe Charge-Parity violation and measure sin2 θ23 precisely. In this dissertation, the experimental setup, the latest analysis methods used in NOvA, and its results from analyzing 6 Years of NuMI data are presented and discussed. Possible improvement in the …
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Measurement of a Weak Transition Moment Using Coherent Control
… can be used for measurements of the very weak Parity Violation transition moment on the Cesium 6s<sup>2</sup>S<sub>1/2</sub>1/2→7s<sup>2</sup>S<sub>1/2</sub>1/2 transition.</p>
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First determination of the weak charge of the proton
The Qweak experiment measures the parity violating asymmetry in elastic e[upper script right arrow]p scattering at Q² = 0.02455 (GeV/c)² with a 180 [mu]A and 88.7% longitudinally polarized electron beam of 1.165 GeV and a 34.4 cm liquid hydrogen target in experimental Hall C at Jefferson Lab. As …
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Measuring Single Charged Pion Production in Muon Neutrino Interactions on Argon with MicroBooNE
… experiments such as DUNE aim to measure charge-parity violation in the lepton sector through flavour oscillations of neutrinos propagating over long distances before interacting with a liquid argon target. Accurate determination of the neutrino energy, crucial for oscillation studies, requires a …
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Machine learning based searches for new physics at the ATLAS experiment
… for performing model-independent searches for parity-violating new physics is presented. This analysis method uses convolutional neural networks which are parity-odd by construction. Asymmetries in the parity-odd output of the convolutional neural network indicates that there is …
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Standard model physics and beyond in low energy neutrino scattering and parity violating electron interactions with nuclei
… information. Indeed, I studied the physics of parity-violating electron scattering off nuclei and the atomic parity-violation process, which permit the extraction of complementary information to the one obtained by neutrino scattering processes. This technique has been applied to the extraction …
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Multiparticle Correlations In Pb--Pb Collisions At \snn=2.76 Tev
… gluons, have been found not to violate global parity symmetry. However, the possibility</p> <p> of local parity violations due to transitions in the vacuum state of QCD is not excluded. The effects of these parity violations could be measured in the</p> <p> hot and dense medium created in the …
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Measurement of Hyperfine Coupling Constants of the 5d²D₃/₂ and 5d²D₅/₂ Levels in Atomic Cesium Using Polarization Quantum Beat Spectroscopy
… applications, including the analysis of atomic parity-violation experiments [4]. I</p> <p>n this experiment, a pump-delayed-probe method based on quantum beat spectroscopy has been used. Cesium atoms are prepared by a short, resonant light pulse ( the pump) in a superposition of excited …
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Parity-Violating Elastic Electron Nucleon Scattering: Measurement of the Strange Quark Content of the Nucleon and Towards a Measurement of the Weak Charge of the Proton
The experiments discussed in this thesis exploit parity violation in elastic electron proton scattering in order to measure properties of the nucleon. Both experiments make use of the high quality, highly polarized electron beam available at Thomas Jefferson National Accelerator Facility. …
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