| Title: |
Addendum to: “Two Higgs Doublet Model predictions for B → Xsγ in NLO QCD ” ∗ |
| Authors: |
Francesca M. Borzumatia; Christoph Greubb A; Typeset Using Revtex |
| Contributors: |
The Pennsylvania State University CiteSeerX Archives |
| Source: |
http://arxiv.org/pdf/hep-ph/9809438v1.pdf. |
| Publication Year: |
2008 |
| Collection: |
CiteSeerX |
| Description: |
BR(B → Xsγ) and possible experimental upper bounds. The allowed region is above the corresponding curves. Recently, several papers appeared that include different classes of electroweak corrections [1,2,3] to the process BR(B → Xsγ). In [3], corrections to the Wilson coefficients at the matching scale due to the top quark and the neutral higgs boson were calculated and found to be negligible. The analysis [1] concluded that the most appropriate value of α−1 em to be used for this problem is the fine structure constant α−1 = 137.036 instead of the value α−1 em = 130.3 ± 2.3 previously used. In [2], the leading logarithmic QED corrections of the form α log(µW/µb) (αs log(µW/µb)) n (with resummation in n) were given. We update our results of [4] for the branching ratio BR(B → Xsγ) in the SM and for the exclusion contour plot (tanβ, mH) in a 2HDM of Type II, by changing the value of αem and by including the class of QED corrections presented in [2]. They can be used to improve BR(B → Xsγ) in any extension of the SM which does not increase the set of effective operators relevant for the problem. In the SM, we obtain |
| Document Type: |
text |
| File Description: |
application/pdf |
| Language: |
English |
| Relation: |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.343.9321 |
| Availability: |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.343.9321; http://arxiv.org/pdf/hep-ph/9809438v1.pdf |
| Rights: |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
| Accession Number: |
edsbas.696F1A7F |
| Database: |
BASE |