Neutrino mass hierarchy and $θ_{13}$ with a magic baseline beta-beam experiment

Details Neutrino mass hierarchy and $θ_{13}$ with a magic baseline beta-beam experiment Neutrino mass hierarchy and $θ_{13}$ with a magic baseline beta-beam experiment

2006-10-25

arxiv.org/abs/hep-ph/0610333v2

Nucl.Phys.B771:1-27,2007

Physics

High Energy Physics

High Energy Physics - Phenomenology

32 pages, 21 eps figures, 5 tables, references added, version to appear in Nucl.Phys.B

Scientific paper

10.1016/j.nuclphysb.2007.02.012

We underscore the physics advantage of an experiment where neutrinos produced in a beta-beam facility at CERN are observed in a large magnetized iron calorimeter (ICAL) at the India-based Neutrino Observatory (INO). The CERN-INO distance is close to the so-called "magic" baseline which helps evade some of the parameter degeneracies and allows for a better measurement of the neutrino mass hierarchy and $\theta_{13}$. We expound the possibility of using radioactive $^8B$ and $^{8}Li$ as the source isotopes for the $\nue$ and $\anue$ beta-beam, respectively, and show that very good sensitivity to both the mass hierarchy and $\theta_{13}$ is possible with a boost $\gamma$ in the 250-500 ballpark.

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