  The current constraints in the neutrino magnetic dipole moment and
axion-electron coupling constant
($\mathrm{\mu_{\nu}\leq2.2\times10^{-12}\mu_{B}}$ and
$\mathrm{\alpha_{ae}\leq0.5\times10^{-26}}$) are tested against the
observational calibration on the tip-RGB of fifty galactic globular clusters,
covering $\mathrm{-1.95\leq[M/H]\leq+0.04}$. When each energy sink is
introduced into stellar models separately, the current known constraints
predict a tip-RGB bolometric luminosity that does not conflict the calibration,
while when they are assumed to occur simultaneously, these constraints can be
lowered down by 50\% and 75\%.
