Next-to-leading order strong interaction corrections to the ΔF = 2 effective Hamiltonian in the MSSM
Abstract
We compute the next-to-leading order strong interaction corrections to gluino-mediated ΔF = 2 box diagrams in the Minimal Supersymmetric Standard Model. These corrections are given by two loop diagrams which we have calculated in three different regularization schemes in the mass insertion approximation. We obtain the next-to-leading order Wilson coefficients of the ΔF = 2 effective Hamiltonian relevant for neutral meson mixings. We find that the matching scale uncertainty is largely reduced at the next-to-leading order, typically from about 10-15% to few percent.
- Publication:
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Journal of High Energy Physics
- Pub Date:
- September 2006
- DOI:
- 10.1088/1126-6708/2006/09/013
- arXiv:
- arXiv:hep-ph/0606197
- Bibcode:
- 2006JHEP...09..013C
- Keywords:
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- High Energy Physics - Phenomenology
- E-Print:
- 26 pages, 8 figures