Precision mass ratio of to
S. Hamzeloui, J. A. Smith, D. J. Fink, and E. G. Myers
Phys. Rev. A 96, 060501(R) (2017) - Published 27 December, 2017
A precision measurement of the mass ratio of He and HD shows a discrepancy of more than 4 standard deviations with respect to the current literature values of the masses of the proton, deuteron, and nucleus of He.













