2008/02/29 by Sanjib Kumar Agarwalla, Sandhya Choubey, Amitava Raychaudhuri +1
Physics and Astronomy · #Astrophysics and Cosmic Phenomena #Neutrino Physics Research #Particle physics theoretical and experimental studies #hep-ex #hep-ph
paper · pdf · doi:10.1088/1126-6708/2008/06/090
published as JHEP0806:090,2008 · 36 pages. Comparison with a benchmark Beta-beam scenario using water Cerenkov detector and a neutrino factory set-up added. Final version to appear in JHEP
arxiv created 2008/06/09 · openalex publication_date 2008/06/24 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We perform a comprehensive and detailed comparison of the physics reach of Beta-beam neutrino experiments between two pairs of plausible source ions, (8B, 8Li) and (18Ne, 6He). We study the optimal choices for the baseline, boost factor, and luminosity. We take a 50 kton iron calorimeter, a la ICAL@INO, as the far detector. We follow two complementary approaches for our study: (i) Fixing the number of useful ion decays and boost factor of the beam, and optimizing for the sensitivity reach between the two pairs of ions as a function of the baseline. (ii) Matching the shape of the spectrum between the two pairs of ions, and studying the requirements for baseline, boost factor, and luminosity. We find that for each pair of ions there are two baselines with very good sensitivity reaches: a short baseline with L [km]/ γ≃ 2.6 (8B+8Li) and L [km]/γ≃ 0.8 (18Ne+6He), and a long ``magic'' baseline. For γ∼ 500, one would optimally use 18Ne and 6He at the short baseline for CP violation, 8B and 8Li at the magic baseline for the mass hierarchy, and either 18Ne and 6He at the short baseline or 8B and 8Li at the magic baseline for the sin22θ13 discovery.