Coalescence parameter \btwo of (anti-)deuterons as a function of the transverse momentum per nucleon, \ptOa,in the considered multiplicity classes in pp collisions at \sqrtSE{7}. The vertical bars represent the statistical uncertainties, the open boxes the systematic ones. The distributions in each class are scaled by constant factors to improve visibility. | ![](https://alice-publications.web.cern.ch/sites/default/files/papers/5117/B2rescaled_ddbar-100562.png ) |