Skripnikov L V, Petrov A N, Titov A V, Flambaum V V
B.P. Konstantinov Petersburg Nuclear Physics Institute, Gatchina, Leningrad District 188300, Russia and Department of Physics, Saint Petersburg State University, Saint Petersburg, Petrodvoretz 198504, Russia.
School of Physics, The University of New South Wales, Sydney, New South Wales 2052, Australia.
Phys Rev Lett. 2014 Dec 31;113(26):263006. doi: 10.1103/PhysRevLett.113.263006.
Investigations of CP violation in the hadron sector may be done using measurements in the ThO molecule. Recent measurements in this molecule improved the limit on the electron electric dipole moment (EDM) by an order of magnitude. Another time-reversal (T) and parity (P)-violating effect in 229ThO is induced by the nuclear magnetic quadrupole moment. We perform nuclear and molecular calculations to express this effect in terms of the strength constants of T, P-odd nuclear forces, neutron EDM, QCD vacuum angle θ, quark EDM, and chromo-EDM.
在强子领域中对CP破坏的研究可以通过对ThO分子进行测量来完成。最近对该分子的测量将电子电偶极矩（EDM）的限制提高了一个数量级。229ThO中另一种违反时间反演（T）和宇称（P）的效应是由核磁四极矩引起的。我们进行了核和分子计算，以便根据T、P奇核力、中子EDM、QCD真空角θ、夸克EDM和色EDM的强度常数来表述这种效应。
