PT Journal
AU Hellmann, C
   Ruiz-Femenia, P
TI Non-relativistic pair annihilation of nearly mass degenerate neutralinos and charginos II. P-wave and next-to-next-to-leading order S-wave coefficients
SO Journal of High Energy Physics
JI J. High Energy Phys.
PY 2013
BP 084
EP 49pp
VL 08
IS 8
DI 10.1007/JHEP08(2013)084
LA English
DE Cosmology of Theories beyond the SM; Supersymmetric Standard Model; Nonperturbative Effects
AB This paper is a continuation of an earlier work (arXiv:1210.7928) which computed analytically the tree-level annihilation rates of a collection of non-relativistic neutralino and chargino two-particle states in the general MSSM. Here we extend the results by providing the next-to-next-to-leading order corrections to the rates in the non-relativistic expansion in momenta and mass differences, which include leading P-wave effects, in analytic form. The results are a necessary input for the calculation of the Sommerfeld-enhanced dark matter annihilation rates including short-distance corrections at next-to-next-to-leading order in the non-relativistic expansion in the general MSSM with neutralino LSP.
ER