Time Modulation of K-Shell Electron Capture Decay Rates of H-Like Heavy   Ions and Neutrino Masses
  We calculate the neutrino masses, using the experimental data on the periods of the time modulation of the K-shell electron capture (EC) decay rates of the H-like heavy ions, measured at GSI. The corrections to neutrino masses, caused by interaction of massive neutrinos with the strong Coulomb field of the daughter ions, are taken into account. 
R. Hoellwieser, A. N. Ivanov, P. Kienle, M. Pitschmann
nucl-th astro-ph.SR hep-ph