Accueil > B_{s,d} -> l+ l- in the Standard Model |
Article | |
Report number | arXiv:1311.0903 ; FLAVOUR(267104)-ERC-53 ; LTH-990 ; SFB-CPP-13-82 ; TTP13-033 ; FLAVOUR(267104)-ERC-53 ; LTH 990 ; SFB-CPP-13-82 ; TTP13-033 |
Title | B_{s,d} -> l+ l- in the Standard Model |
Author(s) | Bobeth, Christoph (Munich, Tech. U.) ; Gorbahn, Martin (Liverpool U., Dept. Math. ; Munich, Tech. U.) ; Hermann, Thomas (KIT, Karlsruhe, TTP) ; Misiak, Mikolaj (Warsaw U. ; CERN) ; Stamou, Emmanuel (Munich, Tech. U. ; Weizmann Inst.) ; Steinhauser, Matthias (KIT, Karlsruhe, TTP) |
Publication | 2014-03-11 |
Imprint | 04 Nov 2013 |
Number of pages | 4 |
Note | Comments: 4 pages, 1 figure 4 pages, 1 figure; v3: matches the published version in Phys. Rev. Lett. 112, 101801 (2014); title and ordering of references modified; results unchanged |
In: | Phys. Rev. Lett. 112 (2014) 101801 |
DOI | 10.1103/PhysRevLett.112.101801 |
Subject category | Particle Physics - Phenomenology |
Abstract | We combine our new results for the O(alpha_em) and O(alpha_s^2) corrections to B_{s,d} -> l^+ l^-, and present updated branching ratio predictions for these decays in the standard model. Inclusion of the new corrections removes major theoretical uncertainties of perturbative origin that have just begun to dominate over the parametric ones. For the recently observed muonic decay of the B_s meson, our calculation gives BR(B_s -> mu^+ mu^-) = (3.65 +_ 0.23) * 10^(-9). |
Copyright/License | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ |