Near Detector Constraint at SBND to reduce uncertainties in SBN Oscillation analysis

The Short Baseline Near Detector (SBND) is a crucial component of the Short Baseline Neutrino (SBN) Program, situated 110 meters from the Booster Neutrino Beam (BNB) target. This 112-ton Liquid Argon Time Projection Chamber (LArTPC) Near Detector is optimally positioned to investigate the potential existence of an additional flavor of neutrino through neutrino oscillation. Due to its proximity to the BNB target, the SBND is uniquely positioned to receive a high rate of un-oscillated neutrino events. This setup offers a valuable opportunity to examine exclusive channels, thereby enhancing our understanding of various interaction modes, aiding in the identification and understanding of various sources of uncertainties. By fully utilizing the detector’s capabilities, we aim to mitigate significant uncertainties in neutrino oscillation studies, primarily those related to neutrino interactions and flux. Achieving a deeper understanding of these uncertainties at the Near Detector level is essential. It provides a framework for establishing constraints that significantly refine the accuracy of the SBN Oscillation analysis.