Accès ouvert
2008
article
OpenAlex
B. Aubert, M. Bóna, Y. Karyotakis, J. P. Lees et autres
We study two-body $B$-meson decays to a charmonium state (${\ensuremath{\eta}}_{c}$, ${\ensuremath{\eta}}_{c}(2S)$ or ${h}_{c}$) and a ${K}^{+}$ or ${K}^{*0}(892)$ meson using a sample of $349\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ of data collected with the BABAR detector at the PEP-II asymmetric-energy $B$ Factory at the Stanford …
fr, es, it, no, us, gb, de, ca, ru
(code pays fourni par la source)
Accès ouvert
2008
article
OpenAlex
B. Aubert, M. Bóna, Y. Karyotakis, J. P. Lees et autres
We present a study of the decay ${B}^{\ensuremath{-}}\ensuremath{\rightarrow}{D}_{(CP)}^{0}{K}^{\ensuremath{-}}$ and its charge conjugate, where ${D}_{(CP)}^{0}$ is reconstructed in both a non-$CP$ flavor eigenstate and in $CP$ ($CP$-even and $CP$-odd) eigenstates, based on a sample of 382 million $\ensuremath{\Upsilon}(4S)\ensuremath{\rightarrow}B\overline{B}$ decays collected with the BABAR …
fr, es, it, no, us, gb, de, ca, ru
(code pays fourni par la source)
Accès ouvert
2008
article
OpenAlex
B. Aubert, M. Bóna, D. Boutigny, Y. Karyotakis et autres
We report measurements of $B$-meson decays into two- and three-body final states containing two charmed baryons using a sample of $230\ifmmode\times\else\texttimes\fi{}{10}^{6}$ $\ensuremath{\Upsilon}(4S)\ensuremath{\rightarrow}B\overline{B}$ decays. We find significant signals in two modes, measuring branching fractions $\mathcal{B}({B}^{\ensuremath{-}}\ensuremath{\rightarrow}{\ensuremath{\Lambda}}_{c}^{+}{\overline{\ensuremath{\Lambda}}}_{c}^{\ensuremath{-}}{K}^{\ensuremath{-}})=(1.14\ifmmode\pm\else\textpm\fi{}0.15\ifmmode\pm\else\textpm\fi{}0.17\ifmmode\pm\else\textpm\fi{}0.60)\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}3}$ and $\mathcal{B}({B}^{\ensuremath{-}}\ensuremath{\rightarrow}{\ensuremath{\Xi}}_{c}^{0}{\overline{\ensuremath{\Lambda}}}_{c}^{\ensuremath{-}})\ifmmode\times\else\texttimes\fi{}\mathcal{B}({\ensuremath{\Xi}}_{c}^{0}\ensuremath{\rightarrow}{\ensuremath{\Xi}}^{\ensuremath{-}}{\ensuremath{\pi}}^{+})=(2.08\ifmmode\pm\else\textpm\fi{}0.65\ifmmode\pm\else\textpm\fi{}0.29\ifmmode\pm\else\textpm\fi{}0.54)\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}5}$, where the uncertainties are statistical, systematic, …
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 present measurements of the branching fractions for the decays ${B}^{\ifmmode\pm\else\textpm\fi{}}\ensuremath{\rightarrow}{a}_{1}^{\ifmmode\pm\else\textpm\fi{}}(1260){\ensuremath{\pi}}^{0}$ and ${B}^{\ifmmode\pm\else\textpm\fi{}}\ensuremath{\rightarrow}{a}_{1}^{0}(1260){\ensuremath{\pi}}^{\ifmmode\pm\else\textpm\fi{}}$ from a data sample of $232\ifmmode\times\else\texttimes\fi{}{10}^{6}$ $B\overline{B}$ pairs produced in ${e}^{+}{e}^{\ensuremath{-}}$ annihilation through the $\ensuremath{\Upsilon}(4S)$ resonance. We measure the branching fraction $\mathcal{B}\mathbf{(}{B}^{\ifmmode\pm\else\textpm\fi{}}\ensuremath{\rightarrow}{a}_{1}^{\ifmmode\pm\else\textpm\fi{}}(1260){\ensuremath{\pi}}^{0}\mathbf{)}\ifmmode\times\else\texttimes\fi{}\mathcal{B}\mathbf{(}{a}_{1}^{\ifmmode\pm\else\textpm\fi{}}(1260)\ensuremath{\rightarrow}{\ensuremath{\pi}}^{\ensuremath{-}}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ifmmode\pm\else\textpm\fi{}}\mathbf{)}=(13.2\ifmmode\pm\else\textpm\fi{}2.7\ifmmode\pm\else\textpm\fi{}2.1)\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}6}$ with a significance of $4.2\ensuremath{\sigma}$, and the …
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 report the results of a $CP$ violation analysis of the decay ${B}^{\ifmmode\pm\else\textpm\fi{}}\ensuremath{\rightarrow}{D}_{{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}{\ensuremath{\pi}}^{0}}{K}^{\ifmmode\pm\else\textpm\fi{}}$, where ${D}_{{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}{\ensuremath{\pi}}^{0}}$ indicates a neutral $D$ meson detected in the final state ${\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}{\ensuremath{\pi}}^{0}$, excluding ${K}_{S}^{0}{\ensuremath{\pi}}^{0}$. The analysis makes use of $324\ifmmode\times\else\texttimes\fi{}{10}^{6}$ ${e}^{+}{e}^{\ensuremath{-}}\ensuremath{\rightarrow}B\overline{B}$ events recorded by the BABAR experiment at …
fr, es, it, cn, 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 study the time-dependent Dalitz plot of $D\ensuremath{\rightarrow}{K}_{S}^{0}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}$ in ${B}^{0}\ensuremath{\rightarrow}{D}^{(*)}{h}^{0}$ decays, where ${h}^{0}$ is a ${\ensuremath{\pi}}^{0}$, $\ensuremath{\eta}$, ${\ensuremath{\eta}}^{\ensuremath{'}}$, or $\ensuremath{\omega}$ meson and ${D}^{*}\ensuremath{\rightarrow}D{\ensuremath{\pi}}^{0}$, using a data sample of $383\ifmmode\times\else\texttimes\fi{}{10}^{6}$ $\ensuremath{\Upsilon}(4S)\ensuremath{\rightarrow}B\overline{B}$ decays collected with the BABAR detector. We determine $\mathrm{cos}2\ensuremath{\beta}=0.42\ifmmode\pm\else\textpm\fi{}0.49\ifmmode\pm\else\textpm\fi{}0.09\ifmmode\pm\else\textpm\fi{}0.13$, $\mathrm{sin}2\ensuremath{\beta}=0.29\ifmmode\pm\else\textpm\fi{}0.34\ifmmode\pm\else\textpm\fi{}0.03\ifmmode\pm\else\textpm\fi{}0.05$, and $|\ensuremath{\lambda}|=1.01\ifmmode\pm\else\textpm\fi{}0.08\ifmmode\pm\else\textpm\fi{}0.02$, …
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 present measurements of $CP$-violating asymmetries in the decay ${B}^{0}\ensuremath{\rightarrow}{a}_{1}^{\ifmmode\pm\else\textpm\fi{}}(1260){\ensuremath{\pi}}^{\ensuremath{\mp}}$ with ${a}_{1}^{\ifmmode\pm\else\textpm\fi{}}(1260)\ensuremath{\rightarrow}{\ensuremath{\pi}}^{\ensuremath{\mp}}{\ensuremath{\pi}}^{\ifmmode\pm\else\textpm\fi{}}{\ensuremath{\pi}}^{\ifmmode\pm\else\textpm\fi{}}$. The data sample corresponds to $384\ifmmode\times\else\texttimes\fi{}{10}^{6}$ $B\overline{B}$ pairs collected with the BABAR detector at the PEP-II asymmetric $B$ factory at SLAC. We measure the $CP$-violating asymmetry ${\mathcal{A}}_{CP}^{{a}_{1}\ensuremath{\pi}}=\ensuremath{-}0.07\ifmmode\pm\else\textpm\fi{}0.07\ifmmode\pm\else\textpm\fi{}0.02$, the mixing-induced $CP$ …
fr, es, it, cn, no, us, gb, de, ca, ru
(code pays fourni par la source)
Accès ouvert
2007
article
OpenAlex
B. Aubert, M. Bóna, D. Boutigny, F. Couderc et autres
We present measurements of the total production rates and momentum distributions of the charmed baryon ${\mathit{\ensuremath{\Lambda}}}_{c}^{+}$ in ${e}^{+}{e}^{\ensuremath{-}}\ensuremath{\rightarrow}\mathrm{\text{hadrons}}$ at a center-of-mass energy of 10.54 GeV and in $\mathit{\ensuremath{\Upsilon}}(4S)$ decays. In hadronic events at 10.54 GeV, charmed hadrons are almost exclusively leading particles …
fr, es, it, cn, 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
A search for charmed baryons decaying to ${D}^{0}p$ reveals two states: the ${\ensuremath{\Lambda}}_{c}(2880{)}^{+}$ baryon and a previously unobserved state at a mass of $[2939.8\ifmmode\pm\else\textpm\fi{}1.3(\mathrm{stat})\ifmmode\pm\else\textpm\fi{}1.0(\mathrm{syst})]\text{ }\text{ }\mathrm{MeV}/{c}^{2}$ and with an intrinsic width of $[17.5\ifmmode\pm\else\textpm\fi{}5.2(\mathrm{stat})\ifmmode\pm\else\textpm\fi{}5.9(\mathrm{syst})]\text{ }\text{ }\mathrm{MeV}$. Consistent and significant signals are observed for …
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 analyze $230.4\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ of data collected with the BABAR detector at the PEP-II ${e}^{+}{e}^{\ensuremath{-}}$ collider at SLAC to search for evidence of ${D}^{0}\mathrm{\text{\ensuremath{-}}}{\overline{D}}^{0}$ mixing using regions of phase space in the decay ${D}^{0}\ensuremath{\rightarrow}{K}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}{\ensuremath{\pi}}^{0}$. We measure the time-integrated mixing rate ${R}_{M}=\mathbf{(}{0.023}_{\ensuremath{-}0.014}^{+0.018}(\mathrm{stat}.)\ifmmode\pm\else\textpm\fi{}0.004(\mathrm{syst}.)\mathbf{)}%$, …
fr, es, it, cn, no, us, gb, de, ca, ru
(code pays fourni par la source)
Accès ouvert
2006
article
OpenAlex
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)
Accès ouvert
2006
article
OpenAlex
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
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