W. Kozanecki

Measurement of the ratio B(B+→Xeν)/B(B0→Xeν)

B. Aubert, M. Bóna, D. Boutigny, F. Couderc et autres

We report measurements of the inclusive electron momentum spectra in decays of charged and neutral $B$ mesons, and of the ratio of semileptonic branching fractions $\mathcal{B}({B}^{+}\ensuremath{\rightarrow}Xe\ensuremath{\nu})$ and $\mathcal{B}({B}^{0}\ensuremath{\rightarrow}Xe\ensuremath{\nu})$. These were performed on a sample of $231\ifmmode\times\else\texttimes\fi{}{10}^{6}$ $B\overline{B}$ events recorded with the BABAR …

fr, es, it, cn, no, us, gb, de, ca, ru (code pays fourni par la source)

Structure at 2175 MeV in e+e−→ϕf0(980) observed via initial-state radiation

B. Aubert, M. Bóna, D. Boutigny, F. Couderc et autres

We study the initial-state-radiation processes ${e}^{+}{e}^{\ensuremath{-}}\ensuremath{\rightarrow}{K}^{+}{K}^{\ensuremath{-}}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}\ensuremath{\gamma}$ and ${e}^{+}{e}^{\ensuremath{-}}\ensuremath{\rightarrow}{K}^{+}{K}^{\ensuremath{-}}{\ensuremath{\pi}}^{0}{\ensuremath{\pi}}^{0}\ensuremath{\gamma}$ using an integrated luminosity of $232\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ collected at the $\ensuremath{\Upsilon}(4S)$ mass with the BABAR detector at SLAC. Even though these reactions are dominated by intermediate states with excited kaons, we are able …

fr, es, it, cn, no, us, gb, de, ca, ru (code pays fourni par la source)

Measurement of the branching fraction and time-dependent CP asymmetry in the decay B0→D*+D*−Ks0

B. Aubert, M. Bóna, D. Boutigny, F. Couderc et autres

We study the decay ${B}^{0}\ensuremath{\rightarrow}{D}^{*+}{D}^{*\ensuremath{-}}{K}_{S}^{0}$ using $(230\ifmmode\pm\else\textpm\fi{}2)\ifmmode\times\else\texttimes\fi{}{10}^{6}B\overline{B}$ pairs collected by the BABAR detector at the PEP-II $B$ factory. We measure a branching fraction $\mathcal{B}({B}^{0}\ensuremath{\rightarrow}{D}^{*+}{D}^{*\ensuremath{-}}{K}_{S}^{0})=(4.4\ifmmode\pm\else\textpm\fi{}0.4\ifmmode\pm\else\textpm\fi{}0.7)\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}3}$ and find evidence for the decay ${B}^{0}\ensuremath{\rightarrow}{D}^{*\ensuremath{-}}{D}_{s1}^{+}(2536)$ with a significance of $4.6\ensuremath{\sigma}$. A time-dependent $CP$ asymmetry analysis is …

fr, es, it, cn, no, us, gb, de, ca, ru (code pays fourni par la source)

Measurements of the decays B0→D¯0pp¯ , B0→D¯*0pp¯ , B0→D−pp¯π+ , and B0→D*−pp¯π+

B. Aubert, R. Barate, M. Bóna, D. Boutigny et autres

We present measurements of branching fractions of ${B}^{0}$ decays to multibody final states containing protons, based on $232\ifmmode\times\else\texttimes\fi{}{10}^{6}$ $\ensuremath{\Upsilon}(4S)\ensuremath{\rightarrow}B\overline{B}$ decays collected with the BABAR detector at the SLAC PEP-II asymmetric-energy $B$ factory. We measure the branching fractions $\mathcal{B}({B}^{0}\ensuremath{\rightarrow}{\overline{D}}^{0}p\overline{p})=(1.13\ifmmode\pm\else\textpm\fi{}0.06\ifmmode\pm\else\textpm\fi{}0.08)\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}4}$, $\mathcal{B}({B}^{0}\ensuremath{\rightarrow}{\overline{D}}^{*0}p\overline{p})=(1.01\ifmmode\pm\else\textpm\fi{}0.10\ifmmode\pm\else\textpm\fi{}0.09)\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}4}$, $\mathcal{B}({B}^{0}\ensuremath{\rightarrow}{D}^{\ensuremath{-}}p\overline{p}{\ensuremath{\pi}}^{+})=(3.38\ifmmode\pm\else\textpm\fi{}0.14\ifmmode\pm\else\textpm\fi{}0.29)\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}4}$, and $\mathcal{B}({B}^{0}\ensuremath{\rightarrow}{D}^{*\ensuremath{-}}p\overline{p}{\ensuremath{\pi}}^{+})=(4.81\ifmmode\pm\else\textpm\fi{}0.22\ifmmode\pm\else\textpm\fi{}0.44)\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}4}$ …

fr, es, it, cn, no, us, gb, de, ca, ru (code pays fourni par la source)

Measurement of the D+→π+π0 and D+→K+π0 branching fractions

B. Aubert, R. Barate, M. Bóna, D. Boutigny et autres

We present measurements of the branching fractions for the Cabbibo suppressed decays ${D}^{+}\ensuremath{\rightarrow}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{0}$ and ${D}^{+}\ensuremath{\rightarrow}{K}^{+}{\ensuremath{\pi}}^{0}$ based on a data sample corresponding to an integrated luminosity of $124.3\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$. The data were taken with the BABAR detector at the PEP-II $B$ Factory …

fr, es, it, cn, no, us, gb, de, ca, ru (code pays fourni par la source)

Branching fraction limits for B0 decays to η′η , η′π0 and ηπ0

B. Aubert, R. Barate, D. Boutigny, F. Couderc et autres

We describe searches for decays to two-body charmless final states ${\ensuremath{\eta}}^{\ensuremath{'}}\ensuremath{\eta}$, ${\ensuremath{\eta}}^{\ensuremath{'}}{\ensuremath{\pi}}^{0}$ and $\ensuremath{\eta}{\ensuremath{\pi}}^{0}$ of ${B}^{0}$ mesons produced in ${e}^{+}{e}^{\ensuremath{-}}$ annihilation. The data, collected with the BABAR detector at the Stanford Linear Accelerator Center, represent $232\ifmmode\times\else\texttimes\fi{}{10}^{6}$ produced $B\overline{B}$ pairs. The results for …

es, it, no, us, gb, de, ca, ru (code pays fourni par la source)

Search for sleptons in e+e− collisions at centre-of-mass energies of 161 GeV and 172 GeV

R. Barate, D. Buskulic, D. Décamp, P. Ghez et autres

The data recorded by the ALEPH experiment at LEP at centre-of-mass energies of 161 GeV and 172 GeV were analysed to search for sleptons, the supersymmetric partners of leptons. No evidence for the production of these particles was found. The number of …

fr, es, it, us, cn, ch, dk (code pays fourni par la source)

Improved tau polarisation measurement

D. Buskulic, D. W. Casper, I. De Bonis, D. Décamp et autres

fr, es, it, cn, ch (code pays fourni par la source)