Precision measurement of the \( {\varXi}_{cc}^{++} \) mass


A measurement of the \( {\varXi}_{cc}^{++} \) 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 fb1. The \( {\varXi}_{cc}^{++} \) candidates are reconstructed via the decay modes \( {\varXi}_{cc}^{++}\to {\varLambda}_c^{+}{K}^{-}{\pi}^{+}{\pi}^{+} \) and \( {\varXi}_{cc}^{++}\to {\varXi}_c^{+}{\pi}^{+} \). The result, 3621.55 ± 0.23 (stat) ± 0.30 (syst) MeV/c2, is the most precise measurement of the \( {\varXi}_{cc}^{++} \) mass to date.

A preprint version of the article is available at ArXiv.


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