K. Suzuki

Exclusive $B \to X_u \ell ν_\ell$ Decays with Hadronic Full-event-interpretation Tagging in 62.8 fb$^{-1}$ of Belle II Data

Belle II Collaboration, F. Abudinén, I. Adachi, R. Adak et autres

We present a reconstruction in early data of the semileptonic decay $B^+ \to π^0 \ell^+ ν_\ell$, and first results of a reconstruction of the decays $B^+ \to ρ^0 \ell^+ ν_\ell$ and $B^0 \to ρ^- \ell^+ ν_\ell$ in a sample corresponding to 62.8 …

Measurement of the branching fraction ${\cal B}(\bar B^0\to D^{*+}\ell^-\barν_\ell)$ with early Belle II data

F. Abudinén, I. Adachi, R. Adak, K. Adamczyk et autres

We measure the branching fractions for the decays $\bar{B}^0 \to D^{*+} e^{-} \barν_e$ and $\bar{B}^0 \to D^{*+} μ^{-} \barν_μ$ using $8.70 \pm 0.09~{\rm fb}^{-1}$ of data collected by the Belle II experiment at the SuperKEKB asymmetric-energy $e^+ e^-$ collider. Candidate signal decays …

fr (code pays fourni par la source)

Observation of the Decay B−→Ds(*)+K−ℓ−ν¯ℓ

P. del Amo Sanchez, J. P. Lees, V. Poireau, E. Prencipe et autres

We report the observation of the decay ${B}^{\ensuremath{-}}\ensuremath{\rightarrow}{D}_{s}^{(*)+}{K}^{\ensuremath{-}}{\ensuremath{\ell}}^{\ensuremath{-}}{\overline{\ensuremath{\nu}}}_{\ensuremath{\ell}}$ based on $342\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ of data collected at the $\ensuremath{\Upsilon}(4S)$ resonance with the BABAR detector at the PEP-II ${e}^{+}{e}^{\ensuremath{-}}$ storage rings at SLAC. A simultaneous fit to three ${D}_{s}^{+}$ decay chains is performed …

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

Search for b→u transitions in B−→DK− and D*K− decays

P. del Amo Sanchez, J. P. Lees, V. Poireau, E. Prencipe et autres

We report results from an updated study of the suppressed decays ${B}^{\ensuremath{-}}\ensuremath{\rightarrow}D{K}^{\ensuremath{-}}$ and ${B}^{\ensuremath{-}}\ensuremath{\rightarrow}{D}^{*}{K}^{\ensuremath{-}}$ followed by $D\ensuremath{\rightarrow}{K}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}$, where ${D}^{(*)}$ indicates a ${D}^{(*)0}$ or a ${\overline{D}}^{(*)0}$ meson, and ${D}^{*}\ensuremath{\rightarrow}D{\ensuremath{\pi}}^{0}$ or ${D}^{*}\ensuremath{\rightarrow}D\ensuremath{\gamma}$. These decays are sensitive to the Cabibbo-Kobayashi-Maskawa unitarity triangle angle $\ensuremath{\gamma}$ due …

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

Evidence for Direct CP Violation in the Measurement of the Cabbibo-Kobayashi-Maskawa Angle γ with B∓→D(*)K(*)∓ Decays

P. del Amo Sanchez, J. P. Lees, V. Poireau, E. Prencipe et autres

We report the measurement of the Cabibbo-Kobayashi-Maskawa $CP$-violating angle $\ensuremath{\gamma}$ through a Dalitz plot analysis of neutral $D$-meson decays to ${K}_{S}^{0}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}$ and ${K}_{S}^{0}{K}^{+}{K}^{\ensuremath{-}}$ produced in the processes ${B}^{\ensuremath{\mp}}\ensuremath{\rightarrow}D{K}^{\ensuremath{\mp}}$, ${B}^{\ensuremath{\mp}}\ensuremath{\rightarrow}{D}^{*}{K}^{\ensuremath{\mp}}$ with ${D}^{*}\ensuremath{\rightarrow}D{\ensuremath{\pi}}^{0}$, $D\ensuremath{\gamma}$, and ${B}^{\ensuremath{\mp}}\ensuremath{\rightarrow}D{K}^{*\ensuremath{\mp}}$ with ${K}^{*\ensuremath{\mp}}\ensuremath{\rightarrow}{K}_{S}^{0}{\ensuremath{\pi}}^{\ensuremath{\mp}}$, using 468 million $B\overline{B}$ pairs collected …

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

Model-independent search for the decay B+→l+νlγ

B. Aubert, Y. Karyotakis, J. P. Lees, V. Poireau et autres

We present a search for the radiative leptonic decay ${B}^{+}\ensuremath{\rightarrow}{\ensuremath{\ell}}^{+}{\ensuremath{\nu}}_{\ensuremath{\ell}}\ensuremath{\gamma}$, where $\ensuremath{\ell}=e$, $\ensuremath{\mu}$, using a data sample of $465\ifmmode\times\else\texttimes\fi{}{10}^{6}$ $B\overline{B}$ pairs collected by the BABAR experiment. In this analysis, we fully reconstruct the hadronic decay of one of the $B$ mesons in …

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

Measurement of the relative branching fractions of B¯→D/D*/D**l−ν¯l decays in events with a fully reconstructed B meson

B. Aubert, M. Bóna, D. Boutigny, Y. Karyotakis et autres

We determine the relative branching fractions of semileptonic $B$ decays to charmed final states. The measurement is performed on the recoil from a fully reconstructed $B$ meson in a sample of $362\ifmmode\times\else\texttimes\fi{}{10}^{6}$ $B\overline{B}$ pairs collected at the $\ensuremath{\Upsilon}(4S)$ resonance with the BABAR …

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

Measurement of branching fraction ratios and CP asymmetries in B±→DCPK±

S. K. Swain, T. E. Browder, K. Abe, K. Abe et autres

We report results on the decay ${B}^{\ensuremath{-}}\ensuremath{\rightarrow}{D}_{\mathrm{CP}}{K}^{\ensuremath{-}}$ and its charge conjugate using a data sample of $85.4\ifmmode\times\else\texttimes\fi{}{10}^{6}$ $B\overline{B}$ pairs recorded at the $\ensuremath{\Upsilon}(4S)$ resonance with the Belle detector at the KEKB asymmetric ${e}^{+}{e}^{\ensuremath{-}}$ storage ring. Ratios of branching fractions of Cabibbo-suppressed to …

us, jp, ru, au, cn, pl, fr, ch, in, si, tw, kr, de, at (code pays fourni par la source)

Study of exclusive B decays to charmed baryons

N. Gabyshev, H. Kichimi, K. Abe, K. Abe et autres

Using $29.1{\mathrm{fb}}^{\ensuremath{-}1}$ of data accumulated at the $\ensuremath{\Upsilon}(4S)$ with the Belle detector at KEKB, we have studied the decay modes ${B}^{0}\ensuremath{\rightarrow}{\ensuremath{\Lambda}}_{c}^{+}\overline{p}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}},$ ${B}^{\ensuremath{-}}\ensuremath{\rightarrow}{\ensuremath{\Lambda}}_{c}^{+}\overline{p}{\ensuremath{\pi}}^{\ensuremath{-}},$ and ${B}^{0}\ensuremath{\rightarrow}{\ensuremath{\Lambda}}_{c}^{+}\overline{p}.$ We report branching fractions of exclusive B decays to charmed baryons with four-, three- and two-body final states, …

Observation of B±→ωK± Decay

R.-S. Lu, K. Abe, Riichiro Abe, I. Adachi et autres

We report the first observation of the charmless two-body mode ${B}^{\ifmmode\pm\else\textpm\fi{}}\ensuremath{\rightarrow}\ensuremath{\omega}{K}^{\ifmmode\pm\else\textpm\fi{}}$ decay, and a new measurement of the branching fraction for the ${B}^{\ifmmode\pm\else\textpm\fi{}}\ensuremath{\rightarrow}\ensuremath{\omega}{\ensuremath{\pi}}^{\ifmmode\pm\else\textpm\fi{}}$ decay. The measured branching fractions are $\mathcal{B}({B}^{\ifmmode\pm\else\textpm\fi{}}\ensuremath{\rightarrow}\ensuremath{\omega}{K}^{\ifmmode\pm\else\textpm\fi{}})=({9.2}_{\ensuremath{-}2.3}^{+2.6}\ifmmode\pm\else\textpm\fi{}1.0)\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}6}$ and $\mathcal{B}({B}^{\ifmmode\pm\else\textpm\fi{}}\ensuremath{\rightarrow}\ensuremath{\omega}{\ensuremath{\pi}}^{\ifmmode\pm\else\textpm\fi{}})=({4.2}_{\ensuremath{-}1.8}^{+2.0}\ifmmode\pm\else\textpm\fi{}0.5)\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}6}$. We also measure the partial rate asymmetry of ${B}^{\ifmmode\pm\else\textpm\fi{}}\ensuremath{\rightarrow}\ensuremath{\omega}{K}^{\ifmmode\pm\else\textpm\fi{}}$ decays …

tw, jp, ru, au, cn, pl, in, si, us, kr, ch, at (code pays fourni par la source)

Measurement of the branching fraction for B→η′K and search for B→η′π+

K. Abe, K. Abe, Riichiro Abe, I. Adachi et autres

We report measurements for two-body charmless hadronic B decays with an η ′ meson in the final state. Using 11.1×10 6 B B ̄ pairs collected with the Belle detector, we find BF ( B + → η ′ K + )=(79 …

jp, kr, ru, au, pl, in, us, tw, cn, de, at (code pays fourni par la source)