Replaying neutrino bremsstrahlung with general dispersion relations

Understand

It is generally held that neutrinos with superluminal velocity will lose their energy spontaneously by radiating electron-positron pairs, similar to bremsstrahlung process.

• Recently, this process was closely studied for neutrinos whose energy is roughly proportional to their momentum.
• Confronted with an increasing amount of superluminal neutrino models, it is urgent to calculate the same process for general dispersion relations.
• The calculation is performed in this paper, without resorting to any nontrivial frame such as the effective "rest frame".