文章基本信息

标题：Resolving oscillation degeneracies with a single neutrino polarity
本地全文：下载
作者：D. Meloni ; OLGA MENA ; C. ORME 等
期刊名称：PoS - Proceedings of Science
印刷版ISSN：1824-8039
出版年度：2008
卷号：2008
出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：Within the future programme of neutrino oscillation experiments that is currently under discussion, long baseline experiments will play a crucial role in providing information on the value of q13, the type of neutrino mass ordering and on the value of the CP-violating phase d , which enters in 3-neutrino oscillations. Here, we consider a beta-beam setup with an intermediate Lorentz factor g = 450 and a baseline of 1050 km. This could be achieved in Europe with a beta-beam sourced at CERN to a detector located at the Boulby mine in the United Kingdom. We consider a neutrino run alone and show that, by exploiting the oscillatory pattern of the signal, a very good sensitivity to CP-violation and the type of hierarchy can be reached. We analyse the physics potential of this setup in detail studying two different exposures (1×1021 and 5×1021 ions-ktonyears). In both cases, we find that the type of neutrinomass hierarchy could be determined at 99% CL, for all values of d , for sin2 2q13 > 0.03. In the high-exposure scenario, we find that the value of the CP-violating phase d could be measured with a 99% CL error of ∼20o if sin2 2q13 > 10−3, with some sensitivity down to values of sin2 2q13 ≃ 10−4.