Accès ouvert
2020
article
OpenAlex
J. P. Lees, Vincent Poireau, V. Tisserand, E. Graugés et autres
A study of the two-body decays ${B}^{\ifmmode\pm\else\textpm\fi{}}\ensuremath{\rightarrow}{X}_{c\overline{c}}{K}^{\ifmmode\pm\else\textpm\fi{}}$, where ${X}_{c\overline{c}}$ refers to one charmonium state, is reported by the BABAR Collaboration using a data sample of $424\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$. The absolute determination of branching fractions for these decays are significantly improved compared to …
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Accès ouvert
2013
article
OpenAlex
J. P. Lees, V. Poireau, V. Tisserand, E. Graugés et autres
We report a measurement of the branching fraction of the exclusive charmless semileptonic decay ${B}^{+}\ensuremath{\rightarrow}\ensuremath{\omega}{\ensuremath{\ell}}^{+}\ensuremath{\nu}$, where $\ensuremath{\ell}$ is either an electron or a muon. We use samples of ${B}^{+}$ mesons tagged by a reconstructed charmed semileptonic decay of the other $B$ meson …
fr, es, it, no, us, de, ca, gb, ru
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Accès ouvert
2009
article
OpenAlex
Bernard Aubert, Y. Karyotakis, J. P. Lees, V. Poireau et autres
We present updated measurements of time-dependent $CP$ asymmetries in fully reconstructed neutral $B$ decays containing a charmonium meson. The measurements reported here use a data sample of $(465\ifmmode\pm\else\textpm\fi{}5)\ifmmode\times\else\texttimes\fi{}{10}^{6}$ $\mathit{\ensuremath{\Upsilon}}(4S)\ensuremath{\rightarrow}B\overline{B}$ decays collected with the BABAR detector at the PEP-II asymmetric energy ${e}^{+}{e}^{\ensuremath{-}}$ storage …
fr, es, it, no, us, gb, de, ca, ru
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Accès ouvert
2008
article
OpenAlex
Bernard Aubert, M. Bóna, Y. Karyotakis, J. P. Lees et autres
The properties of the $\ensuremath{\Xi}(1530)$ resonance are investigated in the ${\ensuremath{\Lambda}}_{c}^{+}\ensuremath{\rightarrow}{\ensuremath{\Xi}}^{\ensuremath{-}}{\ensuremath{\pi}}^{+}{K}^{+}$ decay process. The data sample was collected with the BABAR detector at the SLAC PEP-II asymmetric-energy ${e}^{+}{e}^{\ensuremath{-}}$ collider operating at center-of-mass energies 10.58 and 10.54 GeV. The corresponding integrated luminosity is …
fr, es, it, no, us, gb, de, ca, ru
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Accès ouvert
2007
article
OpenAlex
Bernard Aubert, M. Bóna, D. Boutigny, Y. Karyotakis et autres
The shape of the hadronic form factor ${f}_{+}({q}^{2})$ in the decay ${D}^{0}\ensuremath{\rightarrow}{K}^{\ensuremath{-}}{e}^{+}{\ensuremath{\nu}}_{e}$ has been measured in a model independent analysis and compared with theoretical calculations. We use $75\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ of data recorded by the BABAR detector at the PEP-II electron-positron collider. …
fr, es, it, no, us, gb, de, ca, ru
(code pays fourni par la source)
Accès ouvert
2007
article
OpenAlex
Bernard Aubert, R. Barate, D. Boutigny, F. Couderc et autres
We measure the branching ratios of the Cabibbo-suppressed decays ${\ensuremath{\Lambda}}_{c}^{+}\ensuremath{\rightarrow}\ensuremath{\Lambda}{K}^{+}$ and ${\ensuremath{\Lambda}}_{c}^{+}\ensuremath{\rightarrow}{\ensuremath{\Sigma}}^{0}{K}^{+}$ relative to the Cabibbo-favored decay modes ${\ensuremath{\Lambda}}_{c}^{+}\ensuremath{\rightarrow}\ensuremath{\Lambda}{\ensuremath{\pi}}^{+}$ and ${\ensuremath{\Lambda}}_{c}^{+}\ensuremath{\rightarrow}{\ensuremath{\Sigma}}^{0}{\ensuremath{\pi}}^{+}$ to be $0.044\ifmmode\pm\else\textpm\fi{}0.004\text{ }(\mathrm{stat}.)\ifmmode\pm\else\textpm\fi{}0.003\text{ }(\mathrm{syst}.)$ and $0.038\ifmmode\pm\else\textpm\fi{}0.005\text{ }(\mathrm{stat}.)\ifmmode\pm\else\textpm\fi{}0.003\text{ }(\mathrm{syst}.)$, respectively. We set an upper limit on the branching ratio at the …
fr, es, it, cn, no, us, gb, de, ca, ru
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Accès ouvert
2006
article
OpenAlex
Bernard Aubert, R. Barate, M. Bóna, D. Boutigny et autres
In a study of ${B}^{+}\ensuremath{\rightarrow}J/\ensuremath{\psi}\ensuremath{\gamma}{K}^{+}$ decays, we find evidence for the radiative decay $X(3872)\ensuremath{\rightarrow}J/\ensuremath{\psi}\ensuremath{\gamma}$ with a statistical significance of $3.4\ensuremath{\sigma}$. We measure the product of branching fractions $\mathcal{B}({B}^{+}\ensuremath{\rightarrow}X(3872){K}^{+})\ifmmode\cdot\else\textperiodcentered\fi{}\mathcal{B}(X(3872)\ensuremath{\rightarrow}J/\ensuremath{\psi}\ensuremath{\gamma})=(3.3\ifmmode\pm\else\textpm\fi{}1.0\ifmmode\pm\else\textpm\fi{}0.3)\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}6}$, where the uncertainties are statistical and systematic, respectively. We also measure the branching fraction …
fr, es, it, cn, no, us, gb, de, ca, ru
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Accès ouvert
1989
article
OpenAlex
I. Juricic, G. Goldhaber, George Gidal, Gerald S. Abrams et autres
Four data sets collected with the Mark II detector during its operation at the SPEAR and PEP ${e}^{+}$${e}^{\mathrm{\ensuremath{-}}}$ storage rings at SLAC are used to study the Bose-Einstein correlation between pairs and triplets of like-sign charged pions. The data sets represent four …
us
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