Test of lepton flavor universality in $B \to K \ell^{+}\ell^{-}$ decays
A. Abdesselam, I. Adachi, V. Aulchenko, D. Greenwald et autres
We present measurements of the branching fractions for the decays $B\to K \mu^{+}\mu^{-}$ and $B\to K e^{+}e^{-}$, and their ratio ($R_{K}$), using a data sample of 711 $fb^{-1}$ that contains $772 \times 10^{6}$ $B\bar{B}$ events. The data were collected at the $\Upsilon(4S)$ …
kr, ru, jp, us, de, cn, in, fr, cz (code pays fourni par la source)
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DESY (CERN, DESY, Fermilab, IHEP, and SLAC)