Long-distance effects in $$B\rightarrow K^*\ell \ell $$B→K∗ℓℓ from analyticity
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10052_2018_Article_5918.pdf
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Author(s)
Bobeth, Christoph
Chrzaszcz, Marcin
van Dyk, Danny
Virto, Javier
Date Issued
June 2018
Journal
The European Physical Journal C
Publisher
Springer Berlin Heidelberg
Citation
Bobeth, Christoph, Chrzaszcz, Marcin, van Dyk, Danny. European Physical Journal C (2018) 78: 451.
Version
Final published version
Abstract
We discuss a novel approach to systematically determine the dominant long-distance contribution to B → K∗ decays in the kinematic region where the dilepton invariant mass is below the open charm threshold. This approach provides the most consistent and reliable determination to date and can be used to compute Standard Model predictions for all observables of interest, including the kinematic region where the dilepton invariant mass lies between the J/ψ and the ψ(2S) resonances. We illustrate the power of our results by performing a New Physics fit to theWilson coefficient C9. This approach is systematically improvable from theoretical and experimental sides, and applies to other decay modes of the type B → V, B → P and B → Vγ .
MIT Department
Massachusetts Institute of Technology. Department of Physics
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Creative Commons Attribution
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DOI of Published Version
https://doi.org/10.1140/epjc/s10052-018-5918-6
