y. Koga

Search for the Decay $B_s^0 \rightarrow η^\prime η$

A. Abdesselam, I. Adachi, K. Adamczyk, H. Aihara et autres

In the Standard Model (SM) charmless hadronic decays $B_s^0 \rightarrow η^\prime η$ proceed via tree-level $b\to u$ and penguin $b\to s$ transitions. Penguin transitions are sensitive to Beyond-the-Standard-Model (BSM) physics scenarios and could affect the branching fractions and {\it CP} asymmetries in …

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)