Figure A.1

Template fit result for the interval of $4 \pt 6$ \GeVc: the black line indicates the $\Xi_{c}^{0}$ candidates, the green filled distribution indicates the $\Xi_{c}^{0} \to \Xi^{-} e^{+} \nu_{e}$ signal, the red line indicates the 4-body decay background, the blue line indicates the combinatorial background and the grey hashed line indicates the sum of each contribution, i.e., the total fit, respectively.