Accès ouvert
2008
article
OpenAlex
B. Aubert, M. Bóna, Y. Karyotakis, J. P. Lees et autres
We report the results of a search for the decay ${B}^{0}\ensuremath{\rightarrow}{K}^{*+}{K}^{*\ensuremath{-}}$ with a sample of $454\ifmmode\pm\else\textpm\fi{}5$ million $B\overline{B}$ pairs collected with the BABAR detector at the PEP-II asymmetric-energy ${e}^{+}{e}^{\ensuremath{-}}$ collider at the Stanford Linear Accelerator Center. We obtain an upper limit at …
fr, es, it, no, us, gb, de, ca, ru
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Accès ouvert
2007
article
OpenAlex
B. Aubert, M. Bóna, D. Boutigny, Y. Karyotakis et autres
We search for decays of a $B$ meson into a neutral $D$ meson and a charged kaon, with the $D$ meson decaying into a charged kaon, a charged pion, and a neutral pion. This final state can be reached through the $b\ensuremath{\rightarrow}c$ …
fr, es, it, no, us, gb, de, ca, ru
(code pays fourni par la source)
Accès ouvert
2007
article
OpenAlex
B. Aubert, M. Bóna, D. Boutigny, Y. Karyotakis et autres
We determine the relative branching fractions of semileptonic $B$ decays to charmed final states. The measurement is performed on the recoil from a fully reconstructed $B$ meson in a sample of $362\ifmmode\times\else\texttimes\fi{}{10}^{6}$ $B\overline{B}$ pairs collected at the $\ensuremath{\Upsilon}(4S)$ resonance with the BABAR …
fr, es, it, no, us, gb, de, ca, ru
(code pays fourni par la source)
Accès ouvert
2007
article
OpenAlex
B. Aubert, R. Barate, M. Bóna, D. Boutigny et autres
We report the observation of decays ${B}^{0}\ensuremath{\rightarrow}{D}_{s}^{(*)+}{\ensuremath{\pi}}^{\ensuremath{-}}$ and ${B}^{0}\ensuremath{\rightarrow}{D}_{s}^{(*)\ensuremath{-}}{K}^{+}$ in a sample of $230\ifmmode\times\else\texttimes\fi{}{10}^{6}$ $\ensuremath{\Upsilon}(4S)\ensuremath{\rightarrow}B\overline{B}$ events recorded with the BABAR detector at the SLAC PEP-II asymmetric-energy ${e}^{+}{e}^{\ensuremath{-}}$ storage ring. We measure the branching fractions $\mathcal{B}({B}^{0}\ensuremath{\rightarrow}{D}_{s}^{+}{\ensuremath{\pi}}^{\ensuremath{-}})=\mathbf{(}1.3\ifmmode\pm\else\textpm\fi{}0.3(\mathrm{stat})\ifmmode\pm\else\textpm\fi{}0.2(\mathrm{syst})\mathbf{)}\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}5}$, $\mathcal{B}({B}^{0}\ensuremath{\rightarrow}{D}_{s}^{\ensuremath{-}}{K}^{+})=\mathbf{(}2.5\ifmmode\pm\else\textpm\fi{}0.4(\mathrm{stat})\ifmmode\pm\else\textpm\fi{}0.4(\mathrm{syst})\mathbf{)}\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}5}$, $\mathcal{B}({B}^{0}\ensuremath{\rightarrow}{D}_{s}^{*+}{\ensuremath{\pi}}^{\ensuremath{-}})=\mathbf{(}2.8\ifmmode\pm\else\textpm\fi{}0.6(\mathrm{stat})\ifmmode\pm\else\textpm\fi{}0.5(\mathrm{syst})\mathbf{)}\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}5}$, and $\mathcal{B}({B}^{0}\ensuremath{\rightarrow}{D}_{s}^{*\ensuremath{-}}{K}^{+})=\mathbf{(}2.0\ifmmode\pm\else\textpm\fi{}0.5(\mathrm{stat})\ifmmode\pm\else\textpm\fi{}0.4(\mathrm{syst})\mathbf{)}\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}5}$. The significances of …
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(code pays fourni par la source)
Accès ouvert
2006
article
OpenAlex
B. Aubert, R. Barate, M. Bóna, D. Boutigny et autres
We report the first observation of ${e}^{+}{e}^{\ensuremath{-}}$ annihilation into states of positive $C$ parity, namely, ${\ensuremath{\rho}}^{0}{\ensuremath{\rho}}^{0}$ and $\ensuremath{\phi}{\ensuremath{\rho}}^{0}$. The two states are observed in the ${\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}$ and ${K}^{+}{K}^{\ensuremath{-}}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}$ final states, respectively, in a data sample of $225\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ collected by the …
fr, es, it, cn, no, us, gb, de, ca, ru
(code pays fourni par la source)