Towards Understanding the Origin of Cosmic-Ray Positrons

The positron flux $\Phi_{e^+}$ as a function of the energy at the top of AMS. Characteristic energy $\tilde{E}$ (i.e. spectrally weighted mean energy in the bin) is given with its systematic error from the energy scale uncertainty. The number of positron events before unfolding, $N_{e^+}$, is given together with its statistical error from the fit. $\sigma_{\rm stat}$ is the statistical error. $\sigma^{\rm tmpl}_{\rm syst}$  is the systematic error from the definition of templates. $\sigma^{\rm c.c}_{\rm syst}$ is the systematic error from the charge confusion. $\sigma^{\rm eff}_{\rm syst}$ is the systematic error from the efficiency corrections. $\sigma^{\rm unf}_{\rm syst}$ is the systematic error from the unfolding. $\sigma_{\rm syst}$ is the total systematic error, which is equal to the sum of $\sigma^{\rm tmpl}_{\rm syst}$, $\sigma^{\rm c.c}_{\rm syst}$, $\sigma^{\rm eff}_{\rm syst}$ and $\sigma^{\rm unf}_{\rm syst}$ in quadrature. $\sigma^{\rm eff}_{\rm syst}$ includes the correlated systematic error on the flux normalization of 1%.