Calculate corrected annihilation signals for mixed and wino-dominated spectra

Calculate the spectrum-specific corrected annihilation signals, including the effects of nearby neutralinos, chargino mass splittings, and coupled-channel dynamics, for the wino-dominated and mixed neutralino solutions before assigning definitive gamma-ray line exclusions.

Background

The line comparison uses fixed-order two-body annihilation rates, whereas the canonical H.E.S.S. wino and Higgsino reference curves include electroweak corrections and, for winos, Sommerfeld-related effects. Several SU(5) points have noncanonical compositions, compressed spectra, or nearby neutralinos, so the published canonical curves cannot be directly assigned to them.

In particular, the paper identifies a wino-dominated solution below the cored-profile limit at fixed order but emphasizes that its corrected signal has not yet been determined. A spectrum-specific calculation is therefore needed to establish whether the apparent survival of such points persists after the relevant radiative and coupled-channel corrections.