Consistency of parity-violating pion-nucleon couplings extracted from measurements in 18F and 133Cs

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dc.creatorWilburn, W. S.
dc.creatorBowman, J. D.
dc.date1998-02-13
dc.date.accessioned2026-07-07T11:10:48Z
dc.date.available2026-07-07T11:10:48Z
dc.descriptionThe recent measurement of the nuclear anapole moment of 133Cs has been interpreted to yield a value of the weak pion-nucleon coupling H_pi^1 which contradicts the upper limit from the 18F experiments. We argue that because of the sensitivity of the anapole moment to H_rho^0 in the odd proton nucleus 133Cs, there is a combination of weak meson-nucleon couplings which satisfies both experiments and which is (barely) in agreement with theory. In addition, the anapole moment measurement in 205Tl gives a constraint which is inconsistent with the value from 133Cs, calling into question the theory of nuclear anapole moments. We argue that measurements of directional asymmetry in n+p-->d+gamma and in the photo-disintegration of the deuteron by circularly polarized photons, combined with results from pp scattering, would determine H_pi^1 and several other weak meson-nucleon couplings in a model-independent way.
dc.description9 pages, RevTeX, 1 figure, eps, submitted to Phys. Rev. C
dc.identifierhttps://arxiv.org/abs/nucl-ex/9802006
dc.identifierhttp://arxiv.org/abs/nucl-ex/9802006
dc.identifierPhys.Rev.C57:3425-3429,1998
dc.identifierdoi:10.1103/PhysRevC.57.3425
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/190883
dc.subjectNuclear Experiment
dc.titleConsistency of parity-violating pion-nucleon couplings extracted from measurements in 18F and 133Cs
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