Bs,dl+lB_{s,d} \to l^+ l^- in the Standard Model with Reduced Theoretical Uncertainty

Nov 4, 2013
4 pages
Published in:
  • Phys.Rev.Lett. 112 (2014) 101801
  • Published: Mar 11, 2014
e-Print:
Report number:
  • FLAVOUR(267104)-ERC-53,
  • LTH-990,
  • SFB-CPP-13-82,
  • TTP13-033

Citations per year

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Abstract: (APS)

We combine our new results for the O(αem) and O(αs2) corrections to Bs,d+, 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 Bs meson, our calculation gives B¯(Bsμ+μ)=(3.65±0.23)×109.

Note:
  • 4 pages, 1 figure; v3: matches the published version in Phys. Rev. Lett. 112, 101801 (2014); title and ordering of references modified; results unchanged
  • branching ratio
  • parametric
  • meson