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Neutron electric dipole moment from QCD sum rules

Show simple item record Chan, Chuan-Tsung, 1965- en_US 2009-10-07T00:14:08Z 2009-10-07T00:14:08Z 1996 en_US
dc.identifier.other b38920347 en_US
dc.identifier.other 37624439 en_US
dc.identifier.other Thesis 45256 en_US
dc.description Thesis (Ph. D.)--University of Washington, 1996 en_US
dc.description.abstract The electric dipole moments of nucleons (NEDM, $d\sb{N}$) are calculated using the method of QCD sum rules. Our calculations are based on the parity ($/\!\!\!P$) and time reversal ($/\!\!\!T$) violating parameter $\bar\Theta$ in QCD and establish a functional dependence of the NEDM on $\bar\Theta$, without assuming a perturbative expansion of this symmetry breaking parameter. The results obtained from the QCD sum rules approach are shown to be consistent with the general symmetry constraints on $/\!\!\!P$ and $/\!\!\!T$ in QCD; including the necessity of quark masses, spontaneous chiral symmetry breaking, and the $U\sb{A}$(1) anomaly. Given the current experimental upper bound on the neutron electric dipole moment (nEDM), $d\sb{n}\le 10\sp{-26}e\cdot cm$, we find $\bar\Theta\le 10\sp{-10}$. This is compatible with previous calculations of nEDM using different techniques. en_US
dc.format.extent x, 133 p. en_US
dc.language.iso en_US en_US
dc.rights Copyright is held by the individual authors. en_US
dc.rights.uri For information on access and permissions, please see en_US
dc.subject.other Theses--Physics en_US
dc.title Neutron electric dipole moment from QCD sum rules en_US
dc.type Thesis en_US

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