K. Arinstein

Evidence for the decay $B^{0}\to ηη$

A. Abdesselam, I. Adachi, K. Adamczyk, H. Aihara et autres

We report a search for $B^{0}\to ηη$ with a data sample corresponding to an integrated luminosity of $698 \,{\rm fb}^{-1}$ containing $753 \times 10^{6}$ $B\bar{B}$ pairs collected at the $Υ(4S)$ resonance with the Belle detector at the KEKB asymmetric-energy $e^{+}e^{-}$ collider. The …

Study of χ_{bJ}(1P) Properties in the Radiative Υ(2S) Decays

A. Abdesselam, I. Adachi, K. Adamczyk, H. Aihara et autres

We report a study of radiative decays of χ_{bJ}(1P)(J=0,1,2) mesons into 74 hadronic final states comprising charged and neutral pions, kaons, protons; out of these, 41 modes are observed with at least 5 standard deviation significance. Our measurements not only improve the …

Search for B decays to final states with the η c meson

A. Vinokurova, A. Kuzmin, S. Eidelman, A. Abdesselam et autres

We report a search for B decays to selected final states with the η c meson: B ± → K ± η c π + π −, B ± → K ± η c ω, B ± → K ± η c …

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Measurement of the Wrong-Sign Decays D0→K+π−π0 and D0→K+π−π+π− , and Search for CP Violation

X. C. Tian, Y. Ban, K. Abe, H. Aihara et autres

Using $281\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ of data from the Belle experiment recorded at or near the $\ensuremath{\Upsilon}(4S)$ resonance, we have measured the rates of the ``wrong-sign'' decays ${D}^{0}\ensuremath{\rightarrow}{K}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}{\ensuremath{\pi}}^{0}$ and ${D}^{0}\ensuremath{\rightarrow}{K}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}$ relative to those of the Cabibbo-favored decays ${D}^{0}\ensuremath{\rightarrow}{K}^{\ensuremath{-}}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{0}$ and ${D}^{0}\ensuremath{\rightarrow}{K}^{\ensuremath{-}}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}$. These wrong-sign decays …

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

Search for the b→dγ process

D. Mohapatra, M. Nakao, B. Yabsley, K. Abe et autres

We report the results of a search for the flavor-changing neutral current process $b\ensuremath{\rightarrow}d\ensuremath{\gamma}$ using a sample of $275\ifmmode\times\else\texttimes\fi{}{10}^{6}$ $B$ meson pairs accumulated by the Belle detector at KEKB. We find no significant signal for the exclusive decays ${B}^{\ensuremath{-}}\ensuremath{\rightarrow}{\ensuremath{\rho}}^{\ensuremath{-}}\ensuremath{\gamma}$, ${\overline{B}}^{0}\ensuremath{\rightarrow}{\ensuremath{\rho}}^{0}\ensuremath{\gamma}$, or ${\overline{B}}^{0}\ensuremath{\rightarrow}\ensuremath{\omega}\ensuremath{\gamma}$. …

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