The ratio gA/gV in cavity QCD

 

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dc.contributor.advisor Viollier, Raoul D en_ZA
dc.contributor.author Page, Philip R en_ZA
dc.date.accessioned 2016-02-29T12:08:27Z
dc.date.available 2016-02-29T12:08:27Z
dc.date.issued 1991 en_ZA
dc.identifier.citation Page, P. 1991. The ratio gA/gV in cavity QCD. University of Cape Town. en_ZA
dc.identifier.uri http://hdl.handle.net/11427/17390
dc.description Bibliography: pages 96-98. en_ZA
dc.description.abstract BRS invariant quantum chromodynamics in a spherical cavity is developed using canonical quantization. The weak vector and axial form factors are defined, employing a classical external W- field. The Gell-Mann and Low theorem is extended to include non-diagonal matrix elements and degenerate perturbation theory. The Sucher form of the Gell-Mann and Low theorem is employed to calculate corrections of order GFg² in the weak and strong coupling constants to gA and gv for neutron beta decay. Up and down quarks are assumed massless. The gauge-independent divergences from the loop diagrams cancel each other and can be regularized dimensionally, making renormalization unnecessary. We find that the weak vector and axial current coupling constants are respectively: 9v = 1.0000 gA = 1.0883 + 0.2425 αs', where the preferred value of αs = 2.2 in the M.I.T. bag model gives gA = 1.62. en_ZA
dc.language.iso eng en_ZA
dc.subject.other Phiscs en_ZA
dc.subject.other Theoretical Physics en_ZA
dc.subject.other Quantum chromodynamics en_ZA
dc.title The ratio gA/gV in cavity QCD en_ZA
dc.type Master Thesis
uct.type.publication Research en_ZA
uct.type.resource Thesis en_ZA
dc.publisher.institution University of Cape Town
dc.publisher.faculty Faculty of Science en_ZA
dc.publisher.department Department of Physics en_ZA
dc.type.qualificationlevel Masters
dc.type.qualificationname MSc en_ZA
uct.type.filetype Text
uct.type.filetype Image
dc.identifier.apacitation Page, P. R. (1991). <i>The ratio gA/gV in cavity QCD</i>. (Thesis). University of Cape Town ,Faculty of Science ,Department of Physics. Retrieved from http://hdl.handle.net/11427/17390 en_ZA
dc.identifier.chicagocitation Page, Philip R. <i>"The ratio gA/gV in cavity QCD."</i> Thesis., University of Cape Town ,Faculty of Science ,Department of Physics, 1991. http://hdl.handle.net/11427/17390 en_ZA
dc.identifier.vancouvercitation Page PR. The ratio gA/gV in cavity QCD. [Thesis]. University of Cape Town ,Faculty of Science ,Department of Physics, 1991 [cited yyyy month dd]. Available from: http://hdl.handle.net/11427/17390 en_ZA
dc.identifier.ris TY - Thesis / Dissertation AU - Page, Philip R AB - BRS invariant quantum chromodynamics in a spherical cavity is developed using canonical quantization. The weak vector and axial form factors are defined, employing a classical external W- field. The Gell-Mann and Low theorem is extended to include non-diagonal matrix elements and degenerate perturbation theory. The Sucher form of the Gell-Mann and Low theorem is employed to calculate corrections of order GFg² in the weak and strong coupling constants to gA and gv for neutron beta decay. Up and down quarks are assumed massless. The gauge-independent divergences from the loop diagrams cancel each other and can be regularized dimensionally, making renormalization unnecessary. We find that the weak vector and axial current coupling constants are respectively: 9v = 1.0000 gA = 1.0883 + 0.2425 αs', where the preferred value of αs = 2.2 in the M.I.T. bag model gives gA = 1.62. DA - 1991 DB - OpenUCT DP - University of Cape Town LK - https://open.uct.ac.za PB - University of Cape Town PY - 1991 T1 - The ratio gA/gV in cavity QCD TI - The ratio gA/gV in cavity QCD UR - http://hdl.handle.net/11427/17390 ER - en_ZA


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