Searching for New Physics in Future Neutrino Factory Experiments

Details Searching for New Physics in Future Neutrino Factory Experiments Searching for New Physics in Future Neutrino Factory Experiments

2007-06-11

arxiv.org/abs/0706.1442v1

Eur.Phys.J.C52:905-917,2007

Physics

High Energy Physics

High Energy Physics - Phenomenology

15 pages, 2 figures

Scientific paper

10.1140/epjc/s10052-007-0420-6

An extension of the New Standard Model, by introducing a mixing of the low mass ``active'' neutrinos with heavy ones, or by any model with lepton flavor violation, is considered. This leads to non-orthogonal neutrino production and detection states and to modifications of neutrino oscillations in both, vacuum and matter. The possibility of the discovery of such effects in current and future neutrino oscillation experiments is discussed. First order approximation formulas for the flavor transition probabilities in constant density matter, for all experimentally available channels, are given. Numerical calculations of flavor transition probabilities for two sets of New Physics parameters describing a single ``effective'' heavy neutrino state, both satisfying present experimental constraints, have been performed. Two energy ranges and several baselines, assuming both the current ($\pm2\sigma$) and the expected in future ($\pm3%$) errors of the neutrino oscillation parameters are considered, keeping their present central values. It appears that the biggest potential of the discovery of the possible presence of any New Physics is pronounced in oscillation channels in which $\nu_{e}$, $\nu_{\bar{e}}$ are not involved at all, especially for two baselines, $L=3000 km$ and $L=7500 km$, which for other reasons are also called ``magic'' for future $Neutrino Factory$ experiments.

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