Next-to-leading order strong interaction corrections to the ΔF= 2 effective Hamiltonian in the MSSM | Zendy

M. Ciuchini | Zendy; E. Franco | Zendy; Diego Guadagnoli | Zendy; V. Lubicz | Zendy; V. Porretti | Zendy; L. Silvestrini | Zendy

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

Author(s) -

M. Ciuchini,

E. Franco,

Diego Guadagnoli,

V. Lubicz,

V. Porretti,

L. Silvestrini

Publication year - 2006

Publication title -

journal of high energy physics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.998

H-Index - 261

eISSN - 1126-6708

pISSN - 1029-8479

DOI - 10.1088/1126-6708/2006/09/013

Subject(s) - physics , gluino , hamiltonian (control theory) , particle physics , dimensional regularization , regularization (linguistics) , order (exchange) , minimal supersymmetric standard model , supersymmetry , renormalization , mathematical physics , mathematics , computer science , mathematical optimization , finance , artificial intelligence , economics

We compute the next-to-leading order strong interaction corrections togluino-mediated Delta F=2 box diagrams in the Minimal Supersymmetric StandardModel. These corrections are given by two loop diagrams which we havecalculated in three different regularization schemes in the mass insertionapproximation. We obtain the next-to-leading order Wilson coefficients of theDelta F=2 effective Hamiltonian relevant for neutral meson mixings. We findthat the matching scale uncertainty is largely reduced at the next-to-leadingorder, typically from about 10-15% to few percent.Comment: 26 pages, 8 figure

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