Measurements of exclusive B_s^0 decays at the Y(5S) resonance

Several exclusive $B_s^0$ decays are studied using a 1.86 fb-1 data sample collected at the Y(5S) resonance with the Belle detector at the KEKB asymmetric energy e^+ e^- collider. In the $B_s^0 \to D_s^- \pi^+$ decay mode we find 10 $B_s^0$ candidates and measure the corresponding branching fraction. Combining the B_s^0 -> D_s^{(*)-} \pi^+, B_s^0 -> D_s^{(*)-} \rho^+, B_s^0 -> J/\psi \phi and B_s^0 -> J/\psi \eta decay modes, a significant $B_s^0$ signal is observed. The ratio \sigma (e^+ e^- -> B_s^* \bar{B}_s^*) / \sigma (e^+ e^- -> B_s^{(*)} \bar{B}_s^{(*)}) = (93^{+7}_{-9} \pm 1)% is obtained at the Y(5S) energy, indicating that $B_s^0$ meson production proceeds predominantly through the creation of $B^*_s \bar{B}^*_s$ pairs. The $B_s^0$ and $B_s^*$ meson masses are measured to be M(B_s^0)=(5370 \pm 1 \pm 3)MeV/c^2 and M(B_s^*)=(5418 \pm 1 \pm 3)MeV/c^2. Upper limits on the B_s^0 -> \gamma \gamma, B_s^0 -> \phi \gamma, B_s^0 -> K^+ K^- and B_s^0 -> D_s^{(*)+} D_s^{(*)-} branching fractions are also reported.Comment: 9 pages, 5 figures, published in Phys. Rev. D76, 012002 (2007

Search for Electron Neutrino Appearance in a 250 km Long-Baseline Experiment

journal articl

Measurements of exclusive B^{0}_{s} decays at the γ(5S) resonance

Several exclusive B^{O}_{s} decays are studied using a 1.86 fb^{-1} data sample collected at the Υ(5S) resonance with the Belle detector at the KEKB asymmetric energy e^+e^- collider. In the B^{O}_{s}→D^{-}\{s}π^+ decay mode we find 10 B^{O}_{s} candidates and measure the corresponding branching fraction. Combining the B^{O}_{s}→ D^(*)-_s π^+, B^{O}_{s} → D^(*)-_sρ^+, B^{O}_{s}→ J/Ψφ, and B^{O}_{s}→ J/Ψη decay modes, a significant B^{O}_{S}signal is observed. The ratio σ(e^+e^- → B^{*}_{s}\bar{b}^{*}_{s})/σ(e^+e^- → B^{(*)}_S\bar{B}^{(*)}_s)=(93^{+7}_{-9}±1)% is obtained at the Υ(5S) energy, indicating that B^{O}_{s} meson production proceeds predominantly through the creation of B^{*}_{s}\bar{B}^{*}_S pairs. The B^{O}_{s} and B^{*}_{s} meson masses are measured to be M(B^{O}_{s})=(5370±1±3) MeV/c^2 and M(B^{*}_{s})=(5418±1±3) MeV/c^2. Upper limits on the B^{O}_{s} →γγ, B^{O}_{s} → φγ, B^{O}_{s} → K^+K^-, and B^{O}_{s} → D^{(*)}+_{s}D^{(*)}_s- branching fractions are also reported.journal articl

研究速報 : A minimtzation theory applied to minimization of drag of a two dimensional strut with cavity flow

departmental bulletin pape

【活動報告 報告部(個人) 】長谷川健治

departmental bulletin pape

A new design method of microstrip dual-band bandstop filters

[著者版]A generic lumped-element circuit of dual-band bandstop filter (DBBSF) is proposed based oil novel composite shunt resonators, and its design method is developed with closed-form-formulas. As all example, a DBBSF with center frequencies of 1.7 and 2.3 GHz is designed and fabricated using microstrip lines. The measured frequency response agrees excellently with the theoretical predictions, validating well the proposed design theory and filter structure. (c) 2008 Wiley Periodicals, Inc

At baseline, the mean ages of grouped subjects were approximately 16 years for G1, 27 years for G2, and 43 years for G3, respectively

<p><b>Copyright information:</b></p><p>Taken from "An autosome-wide search using longitudinal data for loci linked to type 2 diabetes progression"</p><p>http://www.biomedcentral.com/1471-2156/4/s1/S8</p><p>BMC Genetics 2003;4(Suppl 1):S8-S8.</p><p>Published online 31 Dec 2003</p><p>PMCID:PMC1866519.</p><p></p> The mean of the fasting glucose levels over the five time points was 91.33 mg/dl in G1, 93.82 mg/dl in G2, and 102.06 mg/dl in G3, respectively. Fasting glucose levels were grouped at baseline a

Genetic distance (cM) is plotted for markers on chromosome 8 on the x-axis

<p><b>Copyright information:</b></p><p>Taken from "An autosome-wide search using longitudinal data for loci linked to type 2 diabetes progression"</p><p>http://www.biomedcentral.com/1471-2156/4/s1/S8</p><p>BMC Genetics 2003;4(Suppl 1):S8-S8.</p><p>Published online 31 Dec 2003</p><p>PMCID:PMC1866519.</p><p></p> R1-R4 in G2 was compared with R1-R4 in G3 (left and right; solid lines), and each contrasted with the mean glucose (dotted lines). The negative log(-value) for linkage is plotted on the y-axis. -values of 10and 10are shown as horizontal dotted lines perpendicular to the y-axis

Gand Eare the genetic and environmental influences common to all the components of MSX, respectively, while Gand Eare the genetic and environmental influences specific to each component

<p><b>Copyright information:</b></p><p>Taken from "Structural equation model-based genome scan for the metabolic syndrome"</p><p>http://www.biomedcentral.com/1471-2156/4/s1/S99</p><p>BMC Genetics 2003;4(Suppl 1):S99-S99.</p><p>Published online 31 Dec 2003</p><p>PMCID:PMC1866540.</p><p></p

Effect of genotyping error in model-free linkage analysis using microsatellite or single-nucleotide polymorphism marker maps-1

<p><b>Copyright information:</b></p><p>Taken from "Effect of genotyping error in model-free linkage analysis using microsatellite or single-nucleotide polymorphism marker maps"</p><p></p><p>BMC Genetics 2005;6(Suppl 1):S153-S153.</p><p>Published online 30 Dec 2005</p><p>PMCID:PMC1866781.</p><p></p> Shannon Information Content (δ = 0.5) for MS (open symbols) and SNP (closed symbols) marker maps