Report number
| arXiv:1503.01789 ; TTP15-007 ; SFB-CPP-14-121 ; SI-HEP-2015-08 ; QFET-2015-09 ; TTK-15-09 ; IFT-2-2015 ; TTP15-007 ; SFB-CPP-14-121 ; SI-HEP-2015-08 ; QFET-2015-09 ; TTK-15-09 ; IFT-2-2015 |
Title
| Updated NNLO QCD predictions for the weak radiative B-meson decays |
Author(s)
|
Misiak, M. (Warsaw U.) ; Asatrian, H.M. (Yerevan Phys. Inst.) ; Boughezal, R. (Argonne) ; Czakon, M. (RWTH Aachen U.) ; Ewerth, T. (KIT, Karlsruhe, TTP) ; Ferroglia, A. (CUNY, Graduate School - U. Ctr. ; New York City Coll. Tech.) ; Fiedler, P. (RWTH Aachen U.) ; Gambino, P. (INFN, Turin ; Turin U.) ; Greub, C. (U. Bern, AEC ; Bern U.) ; Haisch, U. (CERN ; Oxford U., Theor. Phys.) ; Huber, Tobias (Siegen U.) ; Kaminski, M. (Warsaw U.) ; Ossola, G. (CUNY, Graduate School - U. Ctr. ; New York City Coll. Tech.) ; Poradzinski, M. (Warsaw U. ; Siegen U.) ; Rehman, A. (Warsaw U.) ; Schutzmeier, T. (Florida State U.) ; Steinhauser, M. (KIT, Karlsruhe, TTP) ; Virto, J. (Siegen U.) Afficher les 18 auteurs |
Publication
| 2015-06-02 |
Imprint
| 05 Mar 2015 |
Number of pages
| 5 |
Note
| journal version, 5 pages, no figures |
In:
| Phys. Rev. Lett. 114 (2015) 221801 |
DOI
| 10.1103/PhysRevLett.114.221801
|
Subject category
| Particle Physics - Phenomenology |
Abstract
| We perform an updated analysis of the inclusive weak radiative B-meson decays in the standard model, incorporating all our results for the O(alpha_s^2) and lower-order perturbative corrections that have been calculated after 2006. New estimates of non-perturbative effects are taken into account, too. For the CP- and isospin-averaged branching ratios, we find B_{s gamma} = (3.36 +_ 0.23) * 10^-4 and B_{d gamma} = 1.73^{+0.12}_{-0.22} * 10^-5, for E_gamma > 1.6 GeV. These results remain in agreement with the current experimental averages. Normalizing their sum to the inclusive semileptonic branching ratio, we obtain R_gamma = ( B_{s gamma} + B_{d gamma})/B_{c l nu} = (3.31 +_ 0.22) * 10^-3. A new bound from B_{s gamma} on the charged Higgs boson mass in the two-Higgs-doublet-model II reads M_{H^+} > 480 GeV at 95%C.L. |
Copyright/License
| arXiv nonexclusive-distrib. 1.0 publication: © 2015-2024 The Author(s) (License: CC-BY-3.0) |