Detecting matter effects in long baseline experiments

Choudhury, Debajyoti ; Datta, Anindya (2005) Detecting matter effects in long baseline experiments Journal of High Energy Physics, 2005 (07). No pp. given.. ISSN 1126-6708

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Experiments strongly suggest that the flavour mixing responsible for the atmospheric neutrino anomaly is very close to being maximal. Thus, it is of great theoretical as well as experimental importance to measure any possible deviation from maximality. In this context, we reexamine the effects of matter interactions in long baseline neutrino oscillation experiments. Contrary to popular belief, the muon neutrino survival probability is shown to be quite sensitive to matter effects. Moreover, for moderately long baselines, the difference between the survival probilities for νμ and ν̅μ is shown to be large and sensitive to the deviation of |Uμ3| from maximality. Performing a realistic analysis, we demonstrate that a muon-storage ring ν-source alongwith an iron calorimeter detector can measure such deviations. (Contrary to recent claims, this is not so for the NuMI-MINOS experiment.) We also discuss the possible correlation in measuring Uμ3 and U e3 in such experiment.

Item Type:Article
Source:Copyright of this article belongs to Institute of Physics.
Keywords:Neutrino Physics; Standard Model
ID Code:62192
Deposited On:20 Sep 2011 09:51
Last Modified:20 Sep 2011 09:51

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