Production of (anti-)He3 and (anti-)H3 in p-Pb collisions at sNN =5.02 TeV

The transverse momentum (${p}_{\mathrm{T}}$) differential yields of (anti-)$^{3}\mathrm{He}$ and (anti-)$^{3}\mathrm{H}$ measured in $p$-Pb collisions at $\sqrt{{s}_{NN}}$ = 5.02 TeV with ALICE at the Large Hadron Collider (LHC) are presented. The ratios of the ${p}_{\mathrm{T}}$-integrated yields of (anti-)$^{3}\mathrm{He}$ and (anti-)$^{3}\mathrm{H}$ to the proton yields are reported, as well as the ${p}_{\mathrm{T}}$ dependence of the coalescence parameters ${B}_{3}$ for (anti-)$^{3}\mathrm{He}$ and (anti-)$^{3}\mathrm{H}$. For (anti-)$^{3}\mathrm{He}$, the results obtained in four classes of the mean charged-particle multiplicity density are also discussed. These results are compared to predictions from a canonical statistical hadronization model and coalescence approaches. An upper limit on the total yield of ${}^{4}\overline{\mathrm{He}}$ is determined.