Nuclear <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mi>T</mml:mi></mml:math>-violation search using octopole-deformed nuclei in a crystal
H. D. Ramachandran, Amar C. Vutha
Abstract
Precision measurements with atoms and molecules can search for subtle violations of time-reversal symmetry $T$ in nuclei and thereby probe a variety of new-physics models. We present a detailed scheme for a nuclear $T$-violation search experiment using $^{153}\mathrm{Eu}^{3+}$ ions doped in noncentrosymmetric sites within a ${\mathrm{Y}}_{2}{\mathrm{SiO}}_{5}$ crystal. The ions in this solid contain nuclei that are highly sensitive to $T$ violation, and the ions are strongly polarized by the fields from neighboring ions. But in particular, the system and methods that we discuss here enable the use of vast numbers of nuclei trapped in crystals while also offering a number of stringent tests to ward off systematic errors. Our approach maps out a path to probe new physics at the PeV energy scale.