Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2011-10-03
Physics
High Energy Physics
High Energy Physics - Phenomenology
V2, 4 pages. Typo corrected, References added. Content improved significantly. Added discussions about cosmic strings
Scientific paper
In this letter, we show that superluminal neutrinos announced by OPERA could be explained by the existence of a monopole, which is left behind after the spontaneous symmetry breaking (SSB) phase transition of some scalar fields in the universe. We assume the 't Hooft-Polyakov monopole couples to the neutrinos but not photon fields. The monopole introduces a different effective metric to the neutrinos from the one experienced by photons. We find that the superluminal propagation only exists in a very short distance from the monopole, about $10^3$ cm in OPERA. No matter how far they travel, neutrinos always arrive earlier than photons by the same amount of time, provided a monopole existing on or close to their trajectories. This conclusion can be tested by future experiments. The result reconciles the contradiction between OPERA and supernova neutrinos. We further exclude cosmic strings as a possible theoretical explanation.
Wang Peng
Wu Houwen
Yang Haitang
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