A Gaseous Argon-Based Near Detector to Enhance the Physics Capabilities of DUNE
A. Abed Abud, B. Abi, R. Acciarri, M. A. Acero, M. R. Adames, G., Adamov, M. Adamowski, D. Adams, M. Adinolfi, C. Adriano, A. Aduszkiewicz, J., Aguilar, Z. Ahmad, J. Ahmed, B. Aimard, F. Akbar, B. Ali-Mohammadzadeh, T., Alion, K. Allison, S. Alonso Monsalve, M. AlRashed, C. Alt

TL;DR
This paper proposes a magnetized gaseous argon detector for DUNE's near site, aiming to improve CP violation measurements, precision oscillation parameters, and explore new physics beyond the Standard Model.
Contribution
It introduces a novel gaseous argon-based detector system (ND-GAr) designed to enhance DUNE's physics capabilities across multiple research areas.
Findings
Enables high-precision measurements of neutrino oscillations.
Facilitates searches for new particles and interactions.
Extends DUNE's physics program beyond baseline goals.
Abstract
This document presents the concept and physics case for a magnetized gaseous argon-based detector system (ND-GAr) for the Deep Underground Neutrino Experiment (DUNE) Near Detector. This detector system is required in order for DUNE to reach its full physics potential in the measurement of CP violation and in delivering precision measurements of oscillation parameters. In addition to its critical role in the long-baseline oscillation program, ND-GAr will extend the overall physics program of DUNE. The LBNF high-intensity proton beam will provide a large flux of neutrinos that is sampled by ND-GAr, enabling DUNE to discover new particles and search for new interactions and symmetries beyond those predicted in the Standard Model.
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