Addendum to : “ Two Higgs Doublet Model predictions for B → X s γ in NLO QCD ” ∗
نویسندگان
چکیده
منابع مشابه
Next - to - Leading QCD Corrections to B → X s γ : Standard Model and Two - Higgs Doublet Model
We present the QCD corrections to the matching conditions of the ∆B = 1 magnetic and chromo-magnetic operators in the Standard Model and in two-Higgs doublet models. We use an off-shell matching procedure which allows us to perform the computation using Taylor series in the external momenta, instead of asymptotic expansions. In the Standard Model case, we confirm previous results derived on-she...
متن کاملLessons from B → X S Γ in Two Higgs Doublet Models
The next–to–leading order predictions for the branching ratio BR(B → X s γ) are given in a generalized class of two Higgs doublets models. Included are the recently calculated leading QED corrections. It is shown that the high accuracy of the Standard Model calculation is in general not shared by these models. Updated lower limits on the mass of the charged Higgs boson in Two Higgs Doublet Mode...
متن کاملLessons from B → X S Γ in Two Higgs
The next–to–leading order predictions for the branching ratio BR(B → X s γ) are given in a generalized class of two Higgs doublets models. Included are the recently calculated leading QED corrections. It is shown that the high accuracy of the Standard Model calculation is in general not shared by these models. Updated lower limits on the mass of the charged Higgs boson in Two Higgs Doublet Mode...
متن کاملBs→ μ+μ− in the SM and B̄→ Xsγ in the 2HDM at NNLO in QCD
In this contribution the QCD next-to-next-to-leading order (NNLO) matching coefficients to the branching ratio B s → µ + µ − in the Standard Model (SM) and to ¯ B → X s γ in the Two Higgs Doublet Model (2HDM) are discussed. In both cases a three-loop matching between the full and effective theory was performed, which leads to a significant reduction of the scale uncertainty.
متن کامل2 HDMs predictions for B → X s γ in NLO QCD ∗
The decay B → Xsγ is studied at the Next to Leading Order in QCD in a class of models containing at least two Higgs doublets and with only one charged Higgs boson non–decoupled at low–energy. The two–loop matching condition is calculated and it is found to agree with existing results. The complete dependence of the Wilson coefficients on the matching scale is given. The size of the Next to Lead...
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تاریخ انتشار 2008