Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1995-01-12
Phys.Rev.D52:186-195,1995
Physics
High Energy Physics
High Energy Physics - Phenomenology
18 pages, LaTeX, 5 postscript figures included
Scientific paper
10.1103/PhysRevD.52.186
We calculate the next-to-leading QCD corrections to the effective Hamiltonian for \Bsee in the NDR and HV schemes. We give for the first time analytic expressions for the Wilson Coefficient of the operator $Q_9 = (\bar s b)_{V-A}(\bar e e)_V$ in the NDR and HV schemes. Calculating the relevant matrix elements of local operators in the spectator model we demonstrate the scheme independence of the resulting short distance contribution to the physical amplitude. Keeping consistently only leading and next-to-leading terms, we find an analytic formula for the differential dilepton invariant mass distribution in the spectator model. Numerical analysis of the $\mt$, $\Lms$ and $\mu \approx {\cal O}(\mb)$ dependences of this formula is presented. We compare our results with those given in the literature.
Buras Andrzej J.
Muenz Manfred
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