CERN Accelerating science

Article
Report number arXiv:2107.07585
Title Updated physics performance of the ESSnuSB experiment
Related titleUpdated physics performance of the ESSnuSB experiment
Author(s) ESSnuSB Collaboration  Show all 51 authors
Publication 2021-12-23
Imprint 2021-06-25
Number of pages 12
Note 13 pages, 8 figures, 3 tables. Changes: Text updated, this is a published version
In: Eur. Phys. J. C 81 (2021) 1130
DOI 10.1140/epjc/s10052-021-09845-8 (publication)
Subject category physics.ins-det ; Detectors and Experimental Techniques ; hep-ph ; Particle Physics - Phenomenology ; hep-ex ; Particle Physics - Experiment
Accelerator/Facility, Experiment ESSnuSB
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 10σ(13σ) CP violation discovery sensitivity for the baseline option of 540 km (360 km) at δCP=±90. The corresponding fraction of δCP for which CP violation can be discovered at more than 5σ is 70%. Regarding CP precision measurements, the 1σ error associated with δCP=0 is around 5 and with δCP=90 is around 14(7) for the baseline option of 540 km (360 km). For hierarchy sensitivity, one can have 3σ sensitivity for 540 km baseline except δCP=±90 and 5σ sensitivity for 360 km baseline for all values of δCP. The octant of θ23 can be determined at 3σ for the values of: θ23>51 (θ23<42 and θ23>49) for baseline of 540 km (360 km). Regarding measurement precision of the atmospheric mixing parameters, the allowed values at 3σ are: 40<θ23<52 (42<θ23<51.5) and 2.485×103 eV2<Δm312<2.545×103 eV2 (2.49×103 eV2<Δm312<2.54×103 eV2) for the baseline of 540 km (360 km).
Copyright/License preprint: (License: arXiv nonexclusive-distrib 1.0)
publication: © 2021-2024 The Author(s) (License: CC-BY-4.0)



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 Record created 2021-07-20, last modified 2024-06-14


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