Pear-shaped nucleus boosts search for new physics

@article{Battersby2013PearshapedNB,
  title={Pear-shaped nucleus boosts search for new physics},
  author={Stephen J. Battersby},
  journal={Nature},
  year={2013}
}
The strange shape of radium 224 could lead to test alternatives to standard model. 
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References

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Studies of pear-shaped nuclei using accelerated radioactive beams
TLDR
ElectricOctupole transition strengths are determined (a direct measure of octupole correlations) for short-lived isotopes of radon and radium to constrain suitable candidates for experimental studies of atomic electric-dipole moments that might reveal extensions to the standard model.
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TLDR
The neutron-rich isotopes of cadmium up to the N=82 shell closure have been investigated by high-resolution laser spectroscopy and one essential feature of the spherical shell model is unambiguously confirmed by a linear increase of the 11/2(-) quadrupole moments.