论文标题
寻找CP违规的新途径：227-AC的Moessbauer光谱
A new avenue in the search for CP violation: Moessbauer spectroscopy of 227-Ac
论文作者
论文摘要
这项工作提出了一条新的途径，以寻找CP侵略奇特和偶数磁性核时刻。一个有前途的候选人可以在基态下找到这种时刻，这是四极杆形成和八极相关的核227-Actinium。在该核中，连接$ 3/2^+$同时doublet合作伙伴和$ 3/2^ - $基地状态的27.4 kev $ e1 $〜非常适合应用无后坐无后吸收的敏感技术，通常称为MössbauerSpectroscoppy。在这种实验方法中，$ 3/2^+$ $ $ parity-doublet合作伙伴的寿命允许估计$ΔE= 2 \cdotγ_γ$ = $ 23.7（1）\ times 10^{ - 9} $ ev，以实现可实现的能源分辨率。必须通过CP侵入矩的相互作用和晶格中场分布的相应多极矩的相互作用来超越该分辨率。这项工作介绍了由CP侵入时刻引起的关于预期四极分裂和核Zeeman效应的模式的想法。
This work proposes a new avenue in the search for CP-violating odd-electric and even-magnetic nuclear moments. A promising candidate to find such moments in the ground state is the quadrupole-deformed and octupole-correlated nucleus 227-actinium. In this nucleus, the 27.4-keV $E1$~transition that connects the $3/2^+$ parity-doublet partner and the $3/2^-$ ground state is perfectly suited to apply the sensitive technique of recoil-free selfabsorption, commonly known as Mössbauer spectroscopy. In this experimental approach, the lifetime of the $3/2^+$ upper parity-doublet partner allows an estimate of the lower limit of $ΔE = 2\cdot Γ_γ$= $23.7(1) \times 10^{-9}$ eV for the achievable energy resolution to be made. This resolution must be exceeded by the interaction of a CP-violating moment and the corresponding multipole moment of the field distribution in the lattice. This work presents the first ideas for patterns caused by CP-violating moments on the expected quadrupole splitting and nuclear Zeeman effect.
