Precision measurement of the $Xi_{cc}^{++}$ mass

A measurement of the $Xi_{cc}^{++}$ mass is performed using data collected by the LHCb experiment between 2016 and 2018 in $pp$ collisions at a centre-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 5.6 $mathrm{fb}^{-1}$. The $Xi_{cc}^{++}$ candidates are reconstructed via the decay modes $Xi_{cc}^{++}toLambda_c^+K^-pi^+pi^+$ and $Xi_{cc}^{++}toXi_c^+pi^+$. The result, $3621.55 pm 0.23{rm,(stat),} pm 0.30 {rm,(syst),}{rm MeV}/c^2$, is the most precise measurement of the $Xi_{cc}^{++}$ mass to date.