Physics – Nuclear Physics – Nuclear Experiment
Scientific paper
1998-02-13
Phys.Rev.C57:3425-3429,1998
Physics
Nuclear Physics
Nuclear Experiment
9 pages, RevTeX, 1 figure, eps, submitted to Phys. Rev. C
Scientific paper
10.1103/PhysRevC.57.3425
The 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.
Bowman David J.
Wilburn Scott W.
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