Neutrino-electron scatterings are purely leptonic processes with robust Standard Model (SM) predictions. Their measurements can therefore provide constraints to physics beyond SM. Thē νe − e data taken at the Kuo-Sheng Reactor Neutrino Laboratory were used to probe two scenarios: Non-Standard Neutrino Interactions (NSI) and Unparticle Physics. New constraints were placed to the NSI parameters (ε eL ee ,ε eR ee ), (ε eL eµ ,ε eR eµ ) and (ε eL eτ ,ε eR eτ ) for the Non-Universal and Flavor-Changing channels, respectively, as well as to the coupling constants for scalar (λ0) and vector (λ1) unparticles to the neutrinos and electrons.

We report the performance and characterization of a custom-built hybrid detector consisting of BC501A liquid scintillator for fast neutrons and BC702 scintillator for thermal neutrons. The calibration and the resolution of the BC501A liquid scintillator detector are performed. The event identification via Pulse Shape Discrimination (PSD) technique is developed in order to distinguish gamma, fast and thermal neutrons. Monte Carlo simulation packages are developed in GEANT4 to obtain actual neutron energy spectrum from the measured recoil spectrum. The developed methods are tested by reconstruction of 241 AmBe(α, n) neutron spectrum.

Neutrino-electron scatterings (ν − e) are purely leptonic processes with robust Standard Model (SM) predictions. Their measurements can therefore provide constraints to physics beyond SM. Non-commutative (NC) field theories modify space-time commutation relations, and allow neutrino electromagnetic couplings at the tree level. Their contribution to neutrino-electron scattering cross-section was derived. Constraints were placed on the NC scale parameter ΛNC from ν − e experiments with reactor and accelerator neutrinos. The most stringent limit of ΛNC > 3.3 TeV at 95% confidence level improves over the direct bounds from collider experiments.