par Labonne, B.;Orloff, J.;Nezri, Emmanuel 
Référence European Physical Journal C. Particles and Fields, 47, 3, page (805-814)
Publication Publié, 2006-09
Référence European Physical Journal C. Particles and Fields, 47, 3, page (805-814)
Publication Publié, 2006-09
Article révisé par les pairs
| Résumé : | The indirect detection of neutralino dark matter is most promising through annihilation channels producing a hard energy spectrum for the detected particles, such as neutralino annihilation into Zh. A cancellation however makes this particular annihilation channel generically subdominant in the huge parameter space of supersymmetric models. This cancellation requires non-trivial relations between neutralino mixings and masses, which we derive from gauge independence and unitarity of the MSSM. To show how the cancellation overshoots leaving only a subdominant result, we use a perturbative expansion in powers of the electroweak/supersymmetry breaking ratio m Z/m χ. |
