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München 2009 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 20: Neutrinophysik (Theorie) 1

T 20.4: Vortrag

Donnerstag, 12. März 2009, 17:30–17:45, M109

Physics reach of a high gamma Li/B BetaBeam — •Enrique Fernandez Martinez — Max-Planck-Institut fuer Physik (Werner-Heisenberg-Institut) Foehringer Ring 6 D-80805 München

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 magnetized 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 considered (10 × 1018 ion decays per year per baseline), the sensitivity to θ13 reaches sin2 2 θ13 ≥ 1 ×10−4; the sign of the atmospheric mass difference can be identified, regardless of the true hierarchy, for sin2 2 θ13 ≥ 3 ×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 ≥ 2 × 10−4 for |δ| ∼ 90.

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