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 9 of 9 for “"parity-violating asymmetry"”.
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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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First Leptonic Probe of Neutron Radii in Lead at Low-Q2
… They have done so through the technique of the parity-violating asymmetry measurement with limited theoretical uncertainties. My dissertation focuses on the study of nuclear structure, namely the thickness of the neutron skin, using elastic electron scattering experiments.</p> <p>The direct …
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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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DIRECT DETERMINATION OF THE WEAK CHARGE OF THE PROTON VIA PARITY-VIOLATING ELECTRON SCATTERING
… of the electron states were measured to form the parity-violating asymmetry. An asymmetry of -226.5±7.3(stat)±5.8(syst) was measured, corresponding to a weak charge of 0.0719±0.0045 for the proton, which agrees with the value of 0.0708±0.0003 from the Standard Model.</p> <p>During the spin …
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Utilizing Parity Violating Electron Scattering As a Probe to Measure the Neutron Radius of 208-pb
… of 208-Pb and 48-Ca nuclei by measuring the parity-violating asymmetry APV of the elastic scattering of polarized electrons on 208-Pb and 48-Ca targets. In order to achieve a precision measurement of the neutron skins of 208-Pb and 48-Ca it is imperative to maintain precise control over many …
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Precision Measurement of the Proton's Weak Charge using Parity-Violating Electron Scattering
… weak charge of the proton Qp w by measuring the parity-violating asymmetry in elastic electron-proton scattering at a low momentum transfer of Q2 = 0.0249 (GeV/c)2 . Qpw has a definite prediction in the Standard Model, and a value of sin2 θW can be extracted from it for comparison with other …
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Measuring the Weak Charge of the Proton and the Hadronic Parity Violation of the N →Δ Transition
… the weak charge of 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 …
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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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BAYESIAN INFERENCE ON NUCLEAR DATA AND NEUTRON STAR OBSERVATIONS FOR THE NUCLEAR EQUATION OF STATE
… to the tidal deformability in a star– and the parity violating asymmetry –that is very sensitive to the pressure felt among neutrons in the surface of the atomic nucleus. No model to date is able to describe these two observables (within 1 standard deviation). The aim of this project is to …