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arXiv · 1502.04629

T violation in radiative $β$ decay and electric dipole moments

W. G. Dekens·K. K. Vos
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Abstract

In radiative $β$ decay, $T$ violation can be studied through a spin-independent $T$-odd correlation. We consider contributions to this correlation by beyond the standard model (BSM) sources of $T$-violation, arising above the electroweak scale. At the same time such sources, parametrized by dimension-6 operators, can induce electric dipole moments (EDMs). As a consequence, the manifestations of the $T$-odd BSM physics in radiative $β$ decay and EDMs are not independent. Here we exploit this connection to show that current EDM bounds already strongly constrain the spin-independent $T$-odd correlation in radiative $β$ decay.

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W. G. Dekens, K. K. Vos. 2015-02-16. T violation in radiative $β$ decay and electric dipole moments. https://doi.org/10.1016/j.physletb.2015.10.084

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