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TowardsCP-violation studies on superheavy molecules: Theoretical and experimental perspectives
Physical Review A ( IF 2.6 ) Pub Date : 2021-12-01 , DOI: 10.1103/physreva.104.062801
R. Mitra , V. S. Prasannaa , R. F. Garcia Ruiz , T. K. Sato , M. Abe , Y. Sakemi , B. P. Das , B. K. Sahoo

Molecules containing superheavy atoms can be artificially created to serve as sensitive probes to study symmetry-violating phenomena. Here, 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 3–4 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. We also briefly comment on some experimental aspects by discussing the production of these systems.

中文翻译:

超重分子的违反 CP 研究:理论和实验观点

可以人工创建含有超重原子的分子作为敏感探针来研究违反对称性的现象。在这里,我们提供了与电子电偶极矩 (eEDM) 和核 - 电子标量 - 伪标量相互作用有关的量的详细理论研究,这些相互作用包含超重的铪核的双原子分子。针对不同的中性和离子分子研究了对奇偶校验和时间(或等效地,CP)反转违反特性的敏感性。发现这些系统中的有效电场比进行 eEDM 实验的其他已知分子大 3-4 倍。同样,这些超重分子表现出超过 3 倍的增强C-违反标量-伪标量核-电子相互作用。我们使用 Woods-Saxon 核模型的初步分析还表明,这些结果对 Lr 核内的扩散表面相互作用很敏感。我们还通过讨论这些系统的生产来简要评论一些实验方面。
更新日期:2021-12-01
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