. . The invariant mass distribution of $\Xi^-\pi^+ + \Xi^+\pi^-$ pairs in $|y|<0.5$ produced in \pp collisions at $\sqrt{s} = 13$ TeV for $1.6 < p_ gev="" and="" the="" i="" multiplicity="" class="" black="" circles="" combinatorial="" background="" estimated="" with="" event="" mixing="" technique="" is="" shown="" as="" open="" red="" squares="" in="" panel="" whereas="" invariant="" mass="" distribution="" after="" subtraction="" together="" fits="" to="" signal="" residual="" contributions.="" solid="" curve="" result="" of="" combined="" fit="" dashed="" line="" represents="" background.="">< /p_>