Physics

Probing beyond the Standard Model

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Science  03 Jul 2015:
Vol. 349, Issue 6243, pp. 43
DOI: 10.1126/science.349.6243.43-b

The Standard Model of physics presents an inventory of the known fundamental particles and how they interact in order to describe the world around us. But observations, such as that of the preponderance of matter over antimatter, suggest that the Standard Model is incomplete. Experiments with large particle colliders and measurements using smaller-scale precision atom-based techniques are under way in attempts to fill in the holes of the picture. Parker et al. describe one such cold atom experiment, the search for an elusive permanent electric dipole moment in a cloud of laser-trapped radium atoms. Their initial results show promise for detecting such an effect, which should then provide constraints on establishing new physics beyond the Standard Model.

Phys. Rev. Lett. 114, 233002 (2015).

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