Narrow resonances of saturated absorption of the asymmetrical molecule CHFCiBr and the possibility of weak current detection in molecular physics

According to V.S. Letokhov's suggestion the neutral and charged weak currents (in weak interactions) must cause a splitting of the vibrational-rotational levels of left and right molecules by a relative value of 10^-15–10^-16. To detect this effect an experiment is proposed which consists of direct measuring the beat frequency of two frequency stabilized lasers, their references being two identical narrow spectral lines in the vibrational-rotational spectrum of two optical isomers of an asymmetrical molecule. For this purpose one may use narrow saturated absorption resonances of CHFClBr induced in the cw CO₂ laser field. The effects having influence on the reproducibility of the frequency by molecular reference and the necessity of identity conditions for cells with left and right molecules (CHFClBr) are discussed.