Analysis of P- and T-violation effect in NOPTREX Experimental Scheme.*

The Neutron Optics Parity and Time Reversal EXperiment (NOPTREX) will search for possible parity (P) and time (T) reversal invariance violating effects in propagation of polarized neutrons with polarized target. It can be realized by comparing the polarization of an initially unpolarized neutron beam (P) to the asymmetry of initially polarized neutron beam (A) in propagation through a polarized target. The difference between measured polarization and asymmetry would indicate the presence of PT-violating interaction [1]. The measurement can be realized by reversing the neutron polarizer and polarized target on a rotating turntable so the neutron polarizer acts as a neutron analyzer. This method can be free from final state effects [2]. In this talk, using techniques introduced in [3] and [4], we discuss energy dependence of PT-violating effect on a neutron energy, and the possible systematic uncertainties that can arise from various types of deviations from the idealized conditions. [1] P.K. Kabir, Phys. Rev. D, 25, 1985, p. 2013 [2] J. D. Bowman and V. P. Gudkov, Phys. Rev. C 90, 065503 (2014). [3] R. Golub, S.K. Lamoreaux, Phys Rev D, 50, 9, 1994. [4] V. Bunakov V. Gudkov, Z. Phys. A, v.308, 1982, p. 363; V. Bunakov Physics of Particles and Nuclei, v. 26, 2, 1995, pp.115-1