Analysis of MTV experiment at TRIUMF about electron spin correlations in polarized 8Li beta decay

A large CP-Violation (considering CPT theorem, that also means T-violation) is required to explain matter dominated universe. It implies an existence of large T-Vioalation. In nuclear beta decay, T-Violation effect caused by CKM theory is much smaller than experimental resolution. If significant T-violation signal would be observed in nuclear system, it could be an evidence of new physics. Beta decay rate function includes electron spin correlation coefficients. We are interested in R and N correlation. These correlations are related to electron transverse polarization. R-correlation is P- and T-ood term which is sensitive to T-Violation. N-correlation has not measured in nuclear beta decay yet. In addition, N-correlation can be used as reference of analyzing power S which is the measuring sensitivity. In MTV (Mott Polarimetry for T-Violation) experiment, Mott scattered electron’s tracks are detected with cylindrical drift chamber(CDC). We measured the electron scattering angle asymmetry caused from electron transverse polarization. We will discuss the result of our latest data acquisition and analysis.