Enhancing Neutrino Oscillation Precision through DUNE and T2HK Collaboration
Recent research has highlighted significant advancements in the precision of oscillation parameters related to neutrinos, particularly focusing on the synergy between two major experiments: the Deep Underground Neutrino Experiment (DUNE) and the Tokai to Hyper-Kamiokande (T2HK). The paper titled "Improved precision on 2-3 oscillation parameters using the synergy between DUNE and T2HK" by Sanjib Kumar Agarwalla, Ritam Kundu, and Masoom Singh discusses how these experiments can enhance the measurement of key parameters such as (\Delta m^2_{31}) and (\theta_{23}).
The authors assert that precise measurements of these parameters are crucial for understanding the Earth's matter effects in long-baseline neutrino experiments. This understanding is essential for addressing questions regarding neutrino mass ordering and for measuring the value of the CP phase within the three-neutrino framework.
The study reviews past and current experimental results, while also considering future sensitivities from upcoming projects like the IceCube Upgrade and KM3NeT/ORCA. The findings indicate that the combination of DUNE and T2HK can significantly improve the precision of the 2-3 oscillation parameters compared to what each experiment could achieve independently. Specifically, the authors note that this collaboration could enhance the current relative 1(\sigma) precision on (\sin^{2}\theta_{23}) and (\Delta m^{2}_{31}) by factors of 7 and 5, respectively, assuming normal mass ordering.
Furthermore, the paper emphasizes that even with less than half of their nominal exposures, the combined efforts of DUNE and T2HK could reach the sensitivities expected from their full individual exposures. This synergy is expected to provide better constraints on the ((\sin^2\theta_{23} - \delta_{\mathrm{CP}})) plane, which is critical for future neutrino physics research.
The implications of these findings are significant for the field of high-energy physics, as they pave the way for more accurate models of neutrino behavior and contribute to the broader understanding of particle physics.
For further details, the full paper can be accessed at arXiv:2408.12735.