Constraints on long-baseline neutrino oscillation probabilities and CP asymmetries from neutrino oscillation data

Abstract

We consider long-baseline neutrino oscillations in the framework of two schemes with mixing of four massive neutrinos which can accommodate all the existing indications in favour of neutrino mixing. Within these schemes, we derive bounds on the oscillation probabilities and the CP-odd neutrino-antineutrino asymmetries in long-baseline experiments. Using the results of short-baseline neutrino oscillation experiments, we obtain rather strong upper bounds on the long-baseline probabilities 1-P(nu_e->nu_e) and P(nu_mu->nu_e). Nevertheless, the projected sensitivities of the MINOS and ICARUS experiments are better than our bounds. We also show that there are no corresponding constraints for nu_mu->nu_mu and nu_mu->nu_tau long-baseline oscillations and that the CP-odd asymmetry in the latter channel can reach the maximal value allowed by the unitarity of the mixing matrix. Some schemes with mixing of three neutrinos are also considered.

32 pages including 5 figures, RevTeX. New discussion of the matter effects

References in corpus (2)

• CP Violation and Matter Effect in Long Baseline Neutrino Oscillation Experiments
• Reconciling solar and terrestrial neutrino oscillation evidences with minimum sacrifice

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