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From the data release of OPERA - CNGS experiment, and publicly announced on23 September 2011, we cast a phenomenological model based on a Majorananeutrino state carrying a fictitious imaginary mass term, already discussed byMajorana in 1932. This mass term can be induced by the interaction with thematter of the Earth's crust during the 735 Km travel. Within the experimentalerrors, we prove that the model fits with OPERA, MINOS and supernova SN1987adata. Possible violations to Lorentz invariance due to quantum gravity effectshave been considered.

Apparent Lorentz violation with superluminal Majorana neutrinos at OPERA?