01872nas a2200181   4500008004100000245010100041210006900142260000800211300002300219490000800242520121800250100001801468700002001486700002201506700001801528700001601546856012801562       2016                        eng d00aSearch for parity and time reversal violating effects in HgH: relativistic coupled-cluster study0 aSearch for parity and time reversal violating effects in HgH rel  cMAR  aArticle No. 1243070 v1443 a<p>The high effective electric field (E-eff) experienced by the unpaired electron in an atom or a molecule is one of the key ingredients in the success of electron electric dipole moment (eEDM) experiment and its precise calculation requires a very accurate theory. We, therefore, employed the Z-vector method in the relativistic coupled-cluster framework and found that HgH has a very large E-eff value (123.2 GV/cm) which makes it a potential candidate for the next generation eEDM experiment. Our study also reveals that it has a large scalar-pseudoscalar (S-PS) P, T-violating interaction constant, W-s = 284.2 kHz. To judge the accuracy of the obtained results, we have calculated parallel and perpendicular magnetic hyperfine structure (HFS) constants and compared with the available experimental values. The results of our calculation are found to be in nice agreement with the experimental values. Therefore, by looking at the HFS results, we can say that both E-eff and W-s values are also very accurate. Further, We have derived the relationship between these quantities and the ratio which will help to get model independent value of eEDM and S-PS interaction constant. (C) 2016 AIP Publishing LLC.</p>1 aSasmal, Sudip1 aPathak, Himadri1 aNayak, Malaya, K.1 aVaval, Nayana1 aPal, Sourav  uhttps://library.ncl.res.in/content/search-parity-and-time-reversal-violating-effects-hgh-relativistic-coupled-cluster-study