Neutron density distributions for atomic parity nonconservation experiments
نویسندگان
چکیده
منابع مشابه
Atomic parity nonconservation and neutron radii in cesium isotopes.
The interpretation of future precise experiments on atomic parity violation in terms of parameters of the Standard Model could be hampered by uncertainties in the atomic and nuclear structure. While the former can be overcome by measurement in a series of isotopes, the nuclear structure requires knowledge of the neutron density. We use the nuclear Hartree–Fock method, which includes deformation...
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We have examined modifications to the nuclear weak charge due to small differences between the spatial distributions of neutrons and protons in the Cs nucleus. We derive approximate formulae to estimate the value and uncertainty of this modification based only on nuclear rms neutron and proton radii. We also present results of numerical calculations taking more detailed nuclear shapes into acco...
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Parity nonconservation (PNC) was studied for 24 p-wave neutron resonances in 238U from 10 to 300 eV by measuring the helicity dependence of the total neutron cross section with an improved experimental apparatus. Six resonances show statistically significant (greater than 2.9σ) parity violation. An analysis treating the PNC matrix elements as random variables yields a root-mean-square PNC matri...
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ژورنال
عنوان ژورنال: Czechoslovak Journal of Physics
سال: 2001
ISSN: 0011-4626,1572-9486
DOI: 10.1007/s10582-001-0039-z