Next-to-leading order strong interaction corrections to the Delta F=2 effective Hamiltonian in the MSSM

Details Next-to-leading order strong interaction corrections to the Delta F=2 effective Hamiltonian in the MSSM Next-to-leading order strong interaction corrections to the Delta F=2 effective Hamiltonian in the MSSM

2006-06-19

arxiv.org/abs/hep-ph/0606197v1

JHEP 0609:013,2006

Physics

High Energy Physics

High Energy Physics - Phenomenology

26 pages, 8 figures

Scientific paper

10.1088/1126-6708/2006/09/013

We compute the next-to-leading order strong interaction corrections to gluino-mediated Delta F=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 Delta F=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.

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