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θ13, δ and the neutrino mass hierarchy at a γ = 350 double baseline Li/B β-beam

2007/12/31 by Pilar Coloma, Andrea Donini, A. Donini +4 · 2 citations
Physics and Astronomy · #Astrophysics and Cosmic Phenomena #Neutrino Physics Research #Particle physics theoretical and experimental studies #hep-ex #hep-ph

paper · pdf · doi:10.1088/1126-6708/2008/05/050

published as JHEP 0805:050,2008 · 35 pages, 20 figures. Minor changes, matches the published version

openalex publication_date 2008/05/15 · arxiv created 2008/06/17 · openalex created_date 2019/06/27 · openalex updated_date 2026/07/28

Abstract

We consider a β-Beam facility where 8Li and 8B ions are accelerated at γ= 350, accumulated in a 10 Km storage ring and let decay, so as to produce intense νe and νe beams. These beams illuminate two iron detectors located at L ≃ 2000 Km and L ≃ 7000 Km, respectively. The physics potential of this setup is analysed in full detail as a function of the flux. We find that, for the highest flux (10 × 1018 ion decays per year per baseline), the sensitivity to θ13 reaches sin2 2 θ13 ≥ 2 ×10-4; the sign of the atmospheric mass difference can be identified, regardless of the true hierarchy, for sin2 2 θ13 ≥ 4×10-4; and, CP-violation can be discovered in 70% of the δ-parameter space for sin2 2 θ13 ≥ 10-3, having some sensitivity to CP-violation down to sin2 2 θ13 ≥ 10-4 for |δ| ∼ 90^∘.

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