Accès ouvert
2020
article
OpenAlex
J. P. Lees, V. 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
2013
article
OpenAlex
J. P. Lees, V. Poireau, V. Tisserand, E. Graugés et autres
We present the results of a search for the rare flavor-changing neutral-current decays $B\ensuremath{\rightarrow}\ensuremath{\pi}{\ensuremath{\ell}}^{+}{\ensuremath{\ell}}^{\ensuremath{-}}$ ($\ensuremath{\pi}={\ensuremath{\pi}}^{\ifmmode\pm\else\textpm\fi{}}$, ${\ensuremath{\pi}}^{0}$ and $\ensuremath{\ell}=e$, $\ensuremath{\mu}$) and ${B}^{0}\ensuremath{\rightarrow}\ensuremath{\eta}{\ensuremath{\ell}}^{+}{\ensuremath{\ell}}^{\ensuremath{-}}$ using a sample of ${e}^{+}{e}^{\ensuremath{-}}\ensuremath{\rightarrow}\ensuremath{\Upsilon}(4S)\ensuremath{\rightarrow}B\overline{B}$ decays corresponding to $428\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ of integrated luminosity collected by the BABAR detector. No significant …
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Accès ouvert
2012
article
OpenAlex
J. P. Lees, V. Poireau, V. Tisserand, J. Garra Ticó et autres
We report a study of the process $\ensuremath{\gamma}\ensuremath{\gamma}\ensuremath{\rightarrow}X\ensuremath{\rightarrow}{\ensuremath{\eta}}_{c}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}$, where $X$ stands for one of the resonances ${\ensuremath{\chi}}_{c2}(1P)$, ${\ensuremath{\eta}}_{c}(2S)$, $X(3872)$, $X(3915)$, or ${\ensuremath{\chi}}_{c2}(2P)$. The analysis is performed with a data sample of $473.9\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ collected with the BABAR detector at the PEP-II …
fr, es, it, no, us, de, ca, gb, ru
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Accès ouvert
2011
article
OpenAlex
J. P. Lees, V. Poireau, V. Tisserand, J. Garra Ticó et autres
We present searches for rare or forbidden charm decays of the form ${X}_{c}^{+}\ensuremath{\rightarrow}{h}^{\ifmmode\pm\else\textpm\fi{}}{\ensuremath{\ell}}^{\ensuremath{\mp}}{\ensuremath{\ell}}^{(\ensuremath{'})+}$, where ${X}_{c}^{+}$ is a charm hadron (${D}^{+}$, ${D}_{s}^{+}$, or ${\ensuremath{\Lambda}}_{c}^{+}$), ${h}^{\ifmmode\pm\else\textpm\fi{}}$ is a pion, kaon, or proton, and ${\ensuremath{\ell}}^{(\ensuremath{'})\ifmmode\pm\else\textpm\fi{}}$ is an electron or muon. The analysis is based on …
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Accès ouvert
2011
article
OpenAlex
J. P. Lees, V. Poireau, E. Prencipe, V. Tisserand et autres
We use ($111\ifmmode\pm\else\textpm\fi{}1$) million $\ensuremath{\Upsilon}(3S)$ and ($89\ifmmode\pm\else\textpm\fi{}1$) million $\ensuremath{\Upsilon}(2S)$ events recorded by the BABAR detector at the PEP-II B-factory at SLAC to perform a study of radiative transitions between bottomonium states using photons that have been converted to ${e}^{+}{e}^{\ensuremath{-}}$ pairs by the …
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Accès ouvert
2011
article
OpenAlex
J. P. Lees, V. Poireau, E. Prencipe, V. Tisserand et autres
We present branching fraction and $CP$ asymmetry measurements as well as angular studies of $B\ensuremath{\rightarrow}\ensuremath{\phi}\ensuremath{\phi}K$ decays using $464\ifmmode\times\else\texttimes\fi{}{10}^{6}$ $B\overline{B}$ events collected by the BABAR experiment. The branching fractions are measured in the $\ensuremath{\phi}\ensuremath{\phi}$ invariant mass range below the ${\ensuremath{\eta}}_{c}$ resonance (${m}_{\ensuremath{\phi}\ensuremath{\phi}}<2.85\text{ }\text{ …
fr, es, it, no, us, de, ca, gb, ru
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Accès ouvert
2010
article
OpenAlex
P. del Amo Sanchez, J. P. Lees, V. Poireau, E. Prencipe et autres
11 pages, 3 figures, to be submitted to Phys. Rev. D
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Accès ouvert
2008
article
OpenAlex
B. Aubert, M. Bóna, Y. Karyotakis, J. P. Lees et autres
We present the observation of the decay ${B}^{0}\ensuremath{\rightarrow}{\ensuremath{\chi}}_{c0}{K}^{*0}$ as well as evidence of ${B}^{+}\ensuremath{\rightarrow}{\ensuremath{\chi}}_{c0}{K}^{*+}$, with an 8.9 and a 3.6 standard deviation significance, respectively, using a data sample of $454\ifmmode\times\else\texttimes\fi{}{10}^{6}$ $\ensuremath{\Upsilon}(4\mathrm{S})\ensuremath{\rightarrow}B\overline{B}$ decays collected with the BABAR detector at the PEP-II $B$ meson …
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Accès ouvert
2006
article
OpenAlex
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 …
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