A5030819625- Particle physics theoretical and experimental studies
- Quantum Chromodynamics and Particle Interactions
- High-Energy Particle Collisions Research
- Neutrino Physics Research
- Vehicle Dynamics and Control Systems
- Vibration Control and Rheological Fluids
- Hydraulic and Pneumatic Systems
- Dark Matter and Cosmic Phenomena
- Particle Accelerators and Free-Electron Lasers
Deutsches Elektronen-Synchrotron DESY
2016
University of Bonn
2016
University of the Basque Country
2016
University of Florida
2016
Kyungpook National University
2011-2016
University of Cincinnati
2016
A new measurement of the branching fraction leptonic decay ${B}^{+}\ensuremath{\rightarrow}{\ensuremath{\tau}}^{+}\phantom{\rule{0}{0ex}}{\ensuremath{\nu}}_{\ensuremath{\tau}}$ confirms previous measurements and agrees with standard model predictions.
We use 772$\times 10^6$ $B \bar{B}$ meson pairs collected at the $\Upsilon(4S)$ resonance with Belle detector to measure branching fraction for $\bar{B} \rightarrow X_s \gamma$. Our measurement uses a sum-of-exclusives approach in which 38 of hadronic final states strangeness equal $+1$, denoted by $X_s$, are reconstructed. The inclusive $M_{X_s}<$ 2.8 GeV/$c^2$, corresponds minimum photon energy 1.9 GeV, is measured be ${\cal B}(\bar{B} \gamma)=(3.51\pm0.17\pm0.33)\times10^{-4}$, where...
We perform the first search for lepton-number-violating B+->D-l+l'+ decays, where l and l' stand e or mu, using 772 x 10^6 BB-bar pairs accumulated at Upsilon(4S) resonance with Belle detector KEKB e^+e^- collider. No evidence these decays has been found. Assuming uniform three-body phase space distributions D-l+l+ we set following upper limits on branching fractions 90% confidence level: Br(B+ -> D-e+e+) < 2.6x10^-6, D-e+mu+) 1.8x10^-6 D-mu+mu+) 1.0x10^-6.
We report new measurements of the total cross sections for $e^+e^-\to \Upsilon(n{\rm S})\pi^+\pi^-$ ($n$ = 1, 2, 3) and b\bar b$ from a high-luminosity fine scan region $\sqrt{s} 10.63$-$11.05$ GeV with Belle detector. observe that $\Upsilon(n{\rm spectra have little or no non-resonant component extract them masses widths $\Upsilon(10860)$ $\Upsilon(11020)$ their relative phase. find $M_{10860}=(10891.1\pm3.2^{+0.6}_{-1.7})$ MeV/$c^2$ $\Gamma_{10860}=(53.7^{+7.1}_{-5.6}\,^{+1.3}_{-5.4})$ MeV...
We report the first observation of B0→X(3872)(K+π−) and evidence for B+→X(3872)(K0π+). measure product branching fractions former to be B(B0→X(3872)(K+π−))×B(X(3872)→J/ψπ+π−)=(7.9±1.3(stat)±0.4(syst))×10−6 find that B0→X(3872)K∗(892)0 does not dominate B0→X(3872)K+π− decay mode. also B(B+→X(3872)(K0π+))×B(X(3872)→J/ψπ+π−)=(10.6±3.0(stat)±0.9(syst))×10−6. This study is based on full data sample 711 fb−1 (772×106B¯B pairs) collected at Υ(4S) resonance with Belle detector KEKB collider.Received...
We search for the rare radiative decay D0→γγ using a data sample with an integrated luminosity of 832 fb−1 recorded by Belle detector at KEKB e+e− asymmetric-energy collider. find no statistically significant signal and set upper limit on branching fraction B(D0→γγ)<8.5×10−7 90% confidence level. This is most restrictive channel to date.Received 10 December 2015DOI:https://doi.org/10.1103/PhysRevD.93.051102© 2016 American Physical SocietyPhysics Subject Headings (PhySH)Branching...
We report a search for the charmless hadronic decay ${B}^{0}\ensuremath{\rightarrow}\ensuremath{\eta}{\ensuremath{\pi}}^{0}$ with data sample corresponding to an integrated luminosity of $694\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ containing $753\ifmmode\times\else\texttimes\fi{}1{0}^{6}$ $B\overline{B}$ pairs. The were collected by Belle experiment running on $\mathrm{\ensuremath{\Upsilon}}(4S)$ resonance at KEKB ${e}^{+}{e}^{\ensuremath{-}}$ collider. measure branching fraction...
We report a measurement of the ${B}^{0}\ensuremath{\rightarrow}\ensuremath{\psi}(2S){\ensuremath{\pi}}^{0}$ branching fraction based on full $\mathrm{\ensuremath{\Upsilon}}(4S)$ data set $772\ifmmode\times\else\texttimes\fi{}{10}^{6}$ $B\overline{B}$ pairs collected by Belle detector at KEKB asymmetric-energy ${e}^{+}{e}^{\ensuremath{-}}$ collider. obtain...