Accès ouvert
2007
article
OpenAlex
B. Aubert, M. Bóna, D. Boutigny, F. Couderc et autres
We search for the decays ${B}^{\ensuremath{-}}\ensuremath{\rightarrow}\ensuremath{\phi}{K}^{\ensuremath{-}}\ensuremath{\gamma}$ and ${\overline{B}}^{0}\ensuremath{\rightarrow}\ensuremath{\phi}{\overline{K}}^{0}\ensuremath{\gamma}$ in a data sample of $228\ifmmode\times\else\texttimes\fi{}{10}^{6}$ $B\overline{B}$ pairs collected at the $\mathit{\ensuremath{\Upsilon}}(4S)$ resonance with the BABAR detector. We measure the branching fraction $\mathcal{B}({B}^{\ensuremath{-}}\ensuremath{\rightarrow}\ensuremath{\phi}{K}^{\ensuremath{-}}\ensuremath{\gamma})=(3.5\ifmmode\pm\else\textpm\fi{}0.6\ifmmode\pm\else\textpm\fi{}0.4)\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}6}$ and set an upper limit $\mathcal{B}({\overline{B}}^{0}\ensuremath{\rightarrow}\ensuremath{\phi}{\overline{K}}^{0}\ensuremath{\gamma})<2.7\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}6}$ at the 90% confidence level. …
fr, es, it, cn, no, us, gb, de, ca, ru
(code pays fourni par la source)
Accès ouvert
2006
article
OpenAlex
B. Aubert, R. Barate, M. Bóna, D. Boutigny et autres
We observe a new ${D}_{s}$ meson with mass $(2856.6\ifmmode\pm\else\textpm\fi{}{1.5}_{\mathrm{stat}}\ifmmode\pm\else\textpm\fi{}{5.0}_{\mathrm{syst}})\text{ }\text{ }\mathrm{MeV}/{c}^{2}$ and width $(48\ifmmode\pm\else\textpm\fi{}{7}_{\mathrm{stat}}\ifmmode\pm\else\textpm\fi{}{10}_{\mathrm{syst}})\text{ }\text{ }\mathrm{MeV}/{c}^{2}$ decaying into ${D}^{0}{K}^{+}$ and ${D}^{+}{K}_{S}^{0}$. In the same mass distributions, we also observe a broad structure with mass $(2688\ifmmode\pm\else\textpm\fi{}{4}_{\mathrm{stat}}\ifmmode\pm\else\textpm\fi{}{3}_{\mathrm{syst}})\text{ }\text{ }\mathrm{MeV}/{c}^{2}$ and width $(112\ifmmode\pm\else\textpm\fi{}{7}_{\mathrm{stat}}\ifmmode\pm\else\textpm\fi{}{36}_{\mathrm{syst}})\text{ }\text{ }\mathrm{MeV}/{c}^{2}$. …
fr, es, it, no, us, gb, de, ca, ru
(code pays fourni par la source)
Accès ouvert
2006
article
OpenAlex
B. Aubert, R. Barate, M. Bóna, D. Boutigny et autres
Branching fraction and asymmetry measurements of charmless ${B}^{+}\ensuremath{\rightarrow}{K}^{*+}{h}_{1}^{+}{h}_{2}^{\ensuremath{-}}$ (where ${h}_{1,2}=K$, $\ensuremath{\pi}$) decays are presented, using a data sample of $232\ifmmode\times\else\texttimes\fi{}{10}^{6}$ $\ensuremath{\Upsilon}(4S)\ensuremath{\rightarrow}B\overline{B}$ decays collected with the BABAR detector at the SLAC PEP-II asymmetric-energy $B$ factory. Using a maximum likelihood fit, the following branching …
fr, es, it, cn, no, us, gb, de, ca, ru
(code pays fourni par la source)
Accès ouvert
2006
article
OpenAlex
B. Aubert, R. Barate, D. Boutigny, F. Couderc et autres
We report two novel determinations of $|{V}_{ub}|$ with reduced model dependence, based on measurements of the mass distribution of the hadronic system in semileptonic $B$ decays. Events are selected by fully reconstructing the decay of one $B$ meson and identifying a charged …
fr, es, it, cn, no, us, gb, de, ca, ru
(code pays fourni par la source)
Accès ouvert
2005
article
OpenAlex
B. Aubert, R. Barate, D. Boutigny, F. Couderc et autres
Using 88.9 million $B\overline{B}$ events collected by the BABAR detector at the $\mathit{\ensuremath{\Upsilon}}(4S)$, we measure the branching fraction for the radiative penguin process $B\ensuremath{\rightarrow}{X}_{s}\ensuremath{\gamma}$ from the sum of 38 exclusive final states. The inclusive branching fraction above a minimum photon energy ${E}_{\ensuremath{\gamma}}>1.9\text{ …
fr, es, it, cn, no, us, gb, de, ca, ru
(code pays fourni par la source)