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\begin{document}
	
		
	 
	
	 \begin{tabular*}{1\textwidth}{@{\hspace{1mm}}l@{\extracolsep{\fill}}ccc@{\hspace{1mm}}}
    Source 
		& $m_{\psi\xspace_2(3823)\xspace} - m_{\psi\xspace{\rm{(2S)}}\xspace}$ 
		& $m_{\chi\xspace_{ c\xspace\xspace 1}\xspace(3872)\xspace} - m_{\psi\xspace{\rm{(2S)}}\xspace}$
		& $m_{\chi\xspace_{ c\xspace\xspace 1}\xspace(3872)\xspace} - m_{\psi\xspace_2(3823)\xspace}$
    \\[1.5mm]
    \hline 
    \\[-3mm]
  \multicolumn{2}{l}{Signal and background shapes}   & \\
   ~~ $ B\xspace\xspace^+$ \xspace~signal template                            &  0.023  &  $\phantom{<}0.002$ &0.023 \\ 
   ~~$ X\xspace_{ c\xspace\xspace\overline  c\xspace\xspace\xspace}$~signal template      &  0.115  &  $\phantom{<}0.005$ &0.110\\
   ~~Polynomial components                          &  0.070  &  
   $\phantom{<}0.001$
   &0.070\\
   Momentum scale                                   &  0.004  &  $\phantom{<}0.009$ &0.005\\ 
    $ B\xspace\xspace^+$ \xspace~mass uncertainty                             &  0.021  &  $\phantom{<}0.029$ &0.008    
      \\[1.5mm]
    \hline 
    \\[-3mm]
    Sum in quadrature                               &  0.138 &  $\phantom{<}0.031$  &0.133
	\end{tabular*}
\end{document}
