Updated physics performance of the ESSnuSB experiment

Abstract

In this paper, we present the physics performance of the ESSnuSB experiment in the standard three flavor scenario using the updated neutrino flux calculated specifically for the ESSnuSB configuration and updated migration matrices for the far detector. Taking conservative systematic uncertainties corresponding to a normalization error of $5\%$ for signal and $10\%$ for background, we find that there is $10\sigma$ $(13\sigma )$ CP violation discovery sensitivity for the baseline option of 540 km (360 km) at ${\delta }_{\mathrm{CP}}=\pm 90^{\circ }$. The corresponding fraction of ${\delta }_{\mathrm{CP}}$ for which CP violation can be discovered at more than $5\sigma$ is $70\%$. Regarding CP precision measurements, the $1\sigma$ error associated with ${\delta }_{\mathrm{CP}}=0^{\circ }$ is around $5^{\circ }$ and with ${\delta }_{\mathrm{CP}}=-90^{\circ }$ is around $14^{\circ }$ $(7^{\circ })$ for the baseline option of 540 km (360 km). For hierarchy sensitivity, one can have $3\sigma$ sensitivity for 540 km baseline except ${\delta }_{\mathrm{CP}}=\pm 90^{\circ }$ and $5\sigma$ sensitivity for 360 km baseline for all values of ${\delta }_{\mathrm{CP}}$. The octant of ${\theta }_{23}$ can be determined at $3\sigma$ for the values of: ${\theta }_{23}>51^{\circ }$ (${\theta }_{23}<42^{\circ }$ and ${\theta }_{23}>49^{\circ }$) for baseline of 540 km (360 km). Regarding measurement precision of the atmospheric mixing parameters, the allowed values at $3\sigma$ are: $40^{\circ }<{\theta }_{23}<52^{\circ }$ ($42^{\circ }<{\theta }_{23}<51.5^{\circ }$) and $2.485\times 10^{-3}$ eV${}^2<\Delta m_{31}^2<2.545\times 10^{-3}$ eV${}^2$ ($2.49\times 10^{-3}$ eV${}^2<\Delta m_{31}^2<2.54\times 10^{-3}$ eV${}^2$) for the baseline of 540 km (360 km).

arXiv comment13 pages, 8 figures, 3 tables. Changes: Text updated, this is a published version

References in corpus (16)

• The GENIE Neutrino Monte Carlo Generator
• Simulation of long-baseline neutrino oscillation experiments with GLoBES
• Getting the most from the statistical analysis of solar neutrino oscillations
• Superbeams versus Neutrino Factories
• First measurement of neutrino oscillation parameters using neutrinos and antineutrinos by NOvA
• Exploring Neutrino Mixing with Low Energy Superbeams
• CP Violation and Neutrino Oscillations
• A Very Intense Neutrino Super Beam Experiment for Leptonic CP Violation Discovery based on the European Spallation Source Linac: A Snowmass 2013 White Paper
• Systematic uncertainties in long-baseline neutrino oscillations for large ${\theta }_{13}$
• Getting the best out of T2K and NOvA
• Study of the performance of a large scale water-Cherenkov detector (MEMPHYS)
• New look at the degeneracies in the neutrino oscillation parameters, and their resolution by T2K, NO$\nu$A and ICAL
• Optimization of neutrino oscillation facilities for large θ_{13}
• Neutrinos: Theory and Phenomenology
• Probing Neutrino Oscillation Parameters using High Power Superbeam from ESS
• The opportunity offered by the ESSnuSB project to exploit the larger leptonic CP violation signal at the second oscillation maximum and the requirements of this project on the ESS accelerator complex

Cited by in corpus (1)

• A New Generation of Neutrino Cross Section Experiments: Challenges and Opportunities