Presented By: HEP - Astro Seminars
HEP-Astro Seminar | The Search for Time-Reversal Violation Using Pear-Shaped Nuclei
Jaideep Singh (Michigan State University)
Experimental tests of fundamental symmetries using nuclei and other particles subject to the strong nuclear force have led to the discovery of parity (P) violation and the discovery of charge-parity (CP) violation. It is believed that additional sources of CP-violation may be needed to explain the apparent scarcity of antimatter in the universe. A particularly sensitive and unambiguous signature of both time-reversal- (T) and CP-violation would be the existence of an electric dipole moment (EDM). The next generation of EDM searches in a variety of complimentary systems will have unprecedented sensitivity to physics beyond the Standard Model. My talk will focus on certain rare diamagnetic atoms which have octupole-deformed (pear-shaped) nuclei. This uncommon nuclear structure significantly amplifies the observable effect of T, P, & CP-violation originating within the nuclear medium when compared to isotopes with nearly spherical nuclei such as Mercury-199. Certain isotopes of Radium, Protactinium, and Radon are all expected to have enhanced atomic EDMs and will be produced in abundance at the Facility for Rare Isotope Beams at Michigan State University. I will describe the status of the Radium-225 EDM search located at Argonne National Lab and the prospects of EDM searches using Radon and Protactinium.
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