. . . . The invariant mass distribution of $\Lambda\pi^{+} + \overline{\Lambda}\pi^{-}$ pairs (a) and the charge conjugates (c) in $|y|<0.5$ produced in \pp collisions at $\sqrt{s} = 13$ TeV for $1.8 < p_ gev="" and="" the="" i="" multiplicity="" class="" black="" circles="" combinatorial="" background="" estimated="" with="" event="" mixing="" technique="" is="" shown="" as="" open="" red="" squares="" in="" panels="" whereas="" invariant="" mass="" distributions="" after="" subtraction="" are="" together="" fits="" to="" signal="" residual="" contributions.="" solid="" curves="" results="" of="" combined="" fit="" dashed="" lines="" represent="" background.="">< /p_>