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Report No.

Towards $$CP$$-violation studies on superheavy molecules; Theoretical and experimental perspectives

Mitra, R.*; Prasannaa, V. S.*; Garcia Ruiz, R. F.*; Sato, Tetsuya   ; Abe, Minori*; Sakemi, Yasuhiro*; Das, B. P.*; Sahoo, B. K.*

We provide detailed theoretical studies of quantities relevant to the electron electric dipole moment (eEDM) and nucleus-electron scalar-pseudoscalar interactions in diatomic molecules containing superheavy lawrencium nuclei. The sensitivity to parity and time (or, equivalently, $$CP$$) reversal violating properties is studied for different neutral and ionic molecules. The effective electric fields in these systems are found to be about 3$$sim$$4 times larger than other known molecules on which eEDM experiments are being performed. Similarly, these superheavy molecules exhibit an enhancement of more than 3 times for $$CP$$-violating scalar-pseudoscalar nucleus-electron interactions. Our preliminary analysis using the Woods-Saxon nuclear model also demonstrates that these results are sensitive to the diffuse surface interactions inside the Lr nucleus.



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