BRAND - low energy proton detector

The standard model (SM) has attempted to establish the understanding of fundamental particle physics and its interactions, but the physics of baryon asymmetry, neutrino mass hierarchy, the origin of parity violation, dark matter remain unexplained. Nuclear and neutron beta decay correlation coefficients are linearly sensitive to exotic couplings, which are not included in SM. The free polarized neutron can be used as a tool to search for physics beyond the Standard Model (BSM). The BRAND is unique experimental initiative attempting to measure 11 correlation coefficients (a, A, B, D, H, L, N, R, S, U, V) simultaneously in differential decay rate ω, of which (H, L, N, R, S, U, V) depend on transverse electron polarization. The correlation coefficients H, L, S, U, V were never measured before. This contribution focuses on the BRAND detector systems with emphasis on recoil proton detectors