Author:
Hermann Thomas,Misiak Mikolaj,Steinhauser Matthias
Abstract
Abstract
We compute three-loop matching corrections to the Wilson coefficients C
7 and C
8 in the Two Higgs Doublet Model by applying expansions for small, intermediate and large charged Higgs boson masses. The results are used to evaluate the branching ratio of
$ \overline{B}\ \to {X_s}\gamma $
to next-to-next-to leading order accuracy, and to determine an updated lower limit on the charged Higgs boson mass. We find M
H+ ≥ 380GeV at 95% confidence level when the recently completed BABAR data analysis is taken into account. Our results for the charged Higgs contribution to the branching ratio exhibit considerably weaker sensitivity to the matching scale μ
0, as compared to previous calculations.
Publisher
Springer Science and Business Media LLC
Subject
Nuclear and High Energy Physics
Reference38 articles.
1. CLEO collaboration, S. Chen et al., Branching fraction and photon energy spectrum for b → sγ, Phys. Rev. Lett.
87 (2001) 251807 [hep-ex/0108032] [INSPIRE].
2. Belle collaboration, K. Abe et al., A measurement of the branching fraction for the inclusive B → X
s
γ decays with BELLE, Phys. Lett.
B 511 (2001) 151 [hep-ex/0103042] [INSPIRE].
3. Belle collaboration, A. Limosani et al., Measurement of inclusive radiative B-meson decays with a photon energy threshold of 1.7 GeV, Phys. Rev. Lett.
103 (2009) 241801 [arXiv:0907.1384] [INSPIRE].
4. BaBar collaboration, J.P. Lees et al., Precision measurement of the B → X
s
γ photon energy spectrum, branching fraction and direct CP asymmetry A
CP
(B → X
s+d
γ), arXiv:1207.2690 [INSPIRE].
5. BaBar collaboration, J. Lees, V. Poireau and V. Tisserand, Measurement of B(B → X
s
γ), the B → X
s
γ photon energy spectrum and the direct CP asymmetry in B → X
s+d
γ decays, arXiv:1207.5772 [INSPIRE].
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