Use of a heavy water Cherenkov detector to study tensor component of weak interactions via neutrinos from the Spallation Neutron Source.

The COHERENT Collaboration at Oak Ridge National Laboratory operates a variety of neutrino detectors, each with the aim of providing a better understanding of neutrinos through Coherent Elastic Neutrino Nucleus Scattering (CEvNS). These detectors utilize the high neutrino flux from the Spallation Neutron Source at ORNL. One such detector, a 550kg heavy water Cherenkov detector, was commissioned in 2023 with the goal of accurately measuring the neutrino flux produced by SNS. In addition to this objective, we propose that due to the close correlation between energy on incoming neutrinos and electrons generated in neutrino-deuteron charged current interactions, this detector is uniquely suited to study possible tensor component of weak interactions. An upper limit on such a component was established in 1998 by the KARMEN collaboration. We provide estimation of capability of the heavy water detector to improve sensitivity to this component.