Tritium beta-decay endpoint for a Tachyonic Neutrino that travels Faster   than Light
  In this paper, we study the tritium $\beta-$decay in the field theory of the superluminal (faster-than-light) neutrino. We show how the unstable transient modes with $\vec{q} \cdot \vec{q} < m_{\nu}^2$ lead to an excess of events at the endpoint. 
Ngee-Pong Chang