Results for "H. Aihara"

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$Wγ$ and $Zγ$ Production at TevatronMay 15 1995We present results from CDF and D\O\ on $W\gamma$ and $Z\gamma$ productions in $p\bar{p}$ collisions at $\sqrt{s}=1.8~{\rm TeV}.$ The goal of the analyses is to test the non-abelian self-couplings of the $W$, $Z$ and photon, one of the most direct consequences ... More
Remarks on dimensions of triangulated categoriesJan 29 2018In this paper, we explore when a locally finite triangulated category has dimension zero or finite representation type. We also study generation of derived categories by orthogonal subcategories.
SiD Letter of IntentOct 30 2009Letter of intent describing SiD (Silicon Detector) for consideration by the International Linear Collider IDAG panel. This detector concept is founded on the use of silicon detectors for vertexing, tracking, and electromagnetic calorimetry. The detector ... More
Study of Backgrounds at JLC IRMar 13 2003A full simulation program based on GEANT4 has been developed to study beam-induced backgrounds in the JLC beam delivery system. We report some results obtained using this program.
A model of competition among more than two languagesJun 20 2012Apr 03 2013We extend the Abrams-Strogatz model for competition between two languages [Nature 424, 900 (2003)] to the case of n(>=2) competing states (i.e., languages). Although the Abrams-Strogatz model for n=2 can be interpreted as modeling either majority preference ... More
First measurement of phi_3 with a binned model-independent Dalitz plot analysis of B->DK, D->Ks pi+pi- decayJun 20 2011We present the first measurement of the angle phi_3 of the unitarity triangle using a binned model-independent Dalitz plot analysis technique of B->DK, D->Ks pi+pi- decay chain. The method is based on the measurement of parameters related to the strong ... More
Steady state and mean recurrence time for random walks on stochastic temporal networksJul 17 2014Jan 13 2015Random walks are basic diffusion processes on networks and have applications in, for example, searching, navigation, ranking, and community detection. Recent recognition of the importance of temporal aspects on networks spurred studies of random walks ... More
A Measurement of CP Violation in B0 Meson Decays with BelleOct 04 2000We present a preliminary measurement of the Standard Model CP violation parameter $\sin 2\phi_1$ using the Belle detector. A $6.2~{\rm fb}^{-1}$ sample of events produced by the KEKB asymmetric $e^+e^-$ collider operating at the $\Upsilon(4S)$ resonance ... More
Mutating Brauer treesSep 16 2010Jul 07 2011In this paper we introduce mutation of Brauer trees. We show that our mutation of Brauer trees explicitly describes the tilting mutation of Brauer tree algebras introduced by Okuyama and Rickard.
The Belle Silicon Vertex DetectorNov 09 2000The silicon vertex detector of the Belle experiment has been built to provide the vertex information of $B$ meson decays at the KEKB accelerator. Performance during the initial data taking period and a brief description of the upgrade plan are also presented. ... More
Derived equivalences between symmetric special biserial algebrasDec 02 2013Jun 25 2014The notion of mutation plays crucial roles in representation theory of algebras. Two kinds of mutation are well-known: tilting/silting mutation and quiver-mutation. In this paper, we focus on tilting mutation for symmetric algebras. Introducing mutation ... More
Tilting-connected symmetric algebrasDec 15 2010Oct 27 2011The notion of silting mutation was introduced by Iyama and the author. In this paper we mainly study silting mutation for self-injective algebras and prove that any representation-finite symmetric algebra is tilting-connected. Moreover we give some sufficient ... More
Improved measurements of branching fractions and CP partial rate asymmetries for $B\toωK$ and $B\toωπ$Sep 12 2006Dec 22 2006We report improved measurements of $B$ to pseudoscalar-vector decays containing an $\omega$ meson in the final states. Our results are obtained from a data sample that contains $388\times 10^{6}$ $B\bar{B}$ pairs accumulated at the $\Upsilon(4S)$ resonance, ... More
Cosmology from cosmic shear power spectra with Subaru Hyper Suprime-Cam first-year dataSep 24 2018Jan 27 2019We measure cosmic weak lensing shear power spectra with the Subaru Hyper Suprime-Cam (HSC) survey first-year shear catalog covering 137deg$^2$ of the sky. Thanks to the high effective galaxy number density of $\sim$17 arcmin$^{-2}$ even after conservative ... More
Silting mutation in triangulated categoriesSep 17 2010Jul 16 2011In representation theory of algebras the notion of `mutation' often plays important roles, and two cases are well known, i.e. `cluster tilting mutation' and `exceptional mutation'. In this paper we focus on `tilting mutation', which has a disadvantage ... More
Generators and dimensions of derived categoriesJun 01 2011Oct 27 2011Several years ago, Bondal, Rouquier and Van den Bergh introduced the notion of the dimension of a triangulated category, and Rouquier proved that the bounded derived category of coherent sheaves on a separated scheme of finite type over a perfect field ... More
Classifying tilting complexes over preprojective algebras of Dynkin typeSep 24 2015We study tilting complexes over preprojective algebras of Dynkin type. We classify all tilting complexes by giving a bijection between tilting complexes and the braid group of the corresponding folded graph. In particular, we determine the derived equivalence ... More
Dynamics between order and chaos in conceptual models of glacial cyclesFeb 05 2013Jul 02 2013The dynamics of glacial cycles is studied in terms of the dynamical systems theory. We explore the dependence of the climate state on the phase of astronomical forcing by examining five conceptual models of glacial cycles proposed in the literature. The ... More
Classifying tilting complexes over preprojective algebras of Dynkin typeSep 24 2015Mar 15 2018We study tilting complexes over preprojective algebras of Dynkin type. We classify all tilting complexes by giving a bijection between tilting complexes and the braid group of the corresponding folded graph. In particular, we determine the derived equivalence ... More
Endofunctors of singularity categories characterizing Gorenstein ringsMay 18 2014In this paper, we prove that certain contravariant endofunctors of singularity categories characterize Gorenstein rings.
Smoothing effect for spatially distributed renewable resources and its impact on power grid robustnessSep 15 2015In this paper, we show that spatial correlation of renewable energy outputs greatly influences the robustness of power grids. First, we propose a new index for the spatial correlation among renewable energy outputs. We find that the spatial correlation ... More
Fine Discrimination of Analog Patterns by Nonlinear Dendritic InhibitionFeb 17 2004Recent experiments revealed that a certain class of inhibitory neurons in the cerebral cortex make synapses not onto cell bodies but at distal parts of dendrites of the target neurons, mediating highly nonlinear dendritic inhibition. We propose a novel ... More
Algebras sharing the same support $τ$-tilting poset with tree quiver algebrasSep 07 2016Happel and Unger reconstructed hereditary algebras from their posets of tilting modules. Inspired by this result, we try removing the assumption to be hereditary. However, it would be unfortunately fail in general: e.g. every selfinjective algebra has ... More
Proper-time Resolution Function for Measurement of Time Evolution of B Mesons at the KEK B-FactoryJan 16 2003Jul 19 2004The proper-time resolution function for the measurement of the time evolution of B mesons with the Belle detector at KEKB is studied in detail. The obtained resolution function is applied to the measurement of B meson lifetimes, the B0-B0bar oscillation ... More
A cascading nonlinear magneto-optical effect in topological insulatorsMar 05 2018Topological insulators (TIs) are characterized by possessing metallic (gapless) surface states and a finite band-gap state in the bulk. As the thickness of a TI layer decreases down to a few nanometer, hybridization between the top and bottom surfaces ... More
ANOMALOUS GAUGE BOSON INTERACTIONSMar 26 1995We discuss the direct measurement of the trilinear vector boson couplings in present and future collider experiments. The major goals of such experiments will be the confirmation of the Standard Model (SM) predictions and the search for signals of new ... More
WIMPs search by means of the highly segmented scintillatorJun 15 2005Aug 04 2005The highly sensitive method to search for WIMPs dark matter particles is proposed. An array of thin NaI(Tl) plate has the great selectivity for distinguishing the WIMPs events and background ones. The principle of signal selection for WIMPs is described. ... More
Theory of localized synfire chainOct 13 2004Neuron is a noisy information processing unit and conventional view is that information in the cortex is carried on the rate of neurons spike emission. More recent studies on the activity propagation through the homogeneous network have demonstrated that ... More
Theory of Luminescence Spectra of High-Density Electron-Hole Systems: Crossover from Excitonic Bose-Einstein Condenstation to Electron-Hole BCS StateJun 19 2000We present a unified theory of luminescence spectra for highly excited semiconductors, which is applicable both to the electron-hole BCS state and to the exciton Bose-Einstein condensate. The crossover behavior between electron-hole BCS state and exciton ... More
Approximated Infomax Early Stopping: Revisiting Gaussian RBMs on Natural ImagesDec 19 2013Jan 06 2014We pursue an early stopping technique that helps Gaussian Restricted Boltzmann Machines (GRBMs) to gain good natural image representations in terms of overcompleteness and data fitting. GRBMs are widely considered as an unsuitable model for natural images ... More
Classification of two-term tilting complexes over Brauer graph algebrasApr 19 2015Jan 04 2018Using only the combinatorics of its defining ribbon graph, we classify the two-term tilting complexes, as well as their indecomposable summands, of a Brauer graph algebra. As an application, we determine precisely the class of Brauer graph algebras which ... More
The performance of thin NaI(Tl) scintillator plate for dark matter searchDec 08 2005Apr 15 2006A thin (0.05cm) and wide area (5cmX5cm) NaI(Tl) scintillator was developed. The performance of the thin NaI(Tl) plate, energy resolution, single photoelectron energy and position sensitivity were tested. An excellent energy resolution of 20% (FWHM) at ... More
Coherent Response in a Chaotic Neural NetworkMar 01 2000We set up a signal-driven scheme of the chaotic neural network with the coupling constants corresponding to certain information, and investigate the stochastic resonance-like effects under its deterministic dynamics, comparing with the conventional case ... More
Synchronization of Coupled Nonidentical Genetic OscillatorsFeb 10 2006The study on the collective dynamics of synchronization among genetic oscillators is essential for the understanding of the rhythmic phenomena of living organisms at both molecular and cellular levels. Genetic oscillators are biochemical networks, which ... More
Transient Resetting: A Novel Mechanism for Synchrony and Its Biological ExamplesAug 04 2006The study of synchronization in biological systems is essential for the understanding of the rhythmic phenomena of living organisms at both molecular and cellular levels. In this paper, by using simple dynamical systems theory, we present a novel mechanism, ... More
Auto-pooling: Learning to Improve Invariance of Image Features from Image SequencesJan 15 2013Mar 18 2013Learning invariant representations from images is one of the hardest challenges facing computer vision. Spatial pooling is widely used to create invariance to spatial shifting, but it is restricted to convolutional models. In this paper, we propose a ... More
Stochastic Synchronization of Genetic Oscillator NetworksFeb 11 2007The study of synchronization among genetic oscillators is essential for the understanding of the rhythmic phenomena of living organisms at both molecular and cellular levels. Genetic networks are intrinsically noisy due to natural random intra- and inter-cellular ... More
Transmission of severe acute respiratory syndrome in dynamical small-world networksJan 29 2004Jul 16 2004The outbreak of severe acute respiratory syndrome (SARS) is still threatening the world because of a possible resurgence. In the current situation that effective medical treatments such as antiviral drugs are not discovered yet, dynamical features of ... More
Bifurcations and strange nonchaotic attractors in a phase oscillator model of glacial-interglacial cyclesJun 15 2015Glacial-interglacial cycles are large variations in continental ice mass and greenhouse gases, which have dominated climate variability over the Quaternary. The dominant periodicity of the cycles is $\sim $40 kyr before the so-called middle Pleistocene ... More
Classification of two-term tilting complexes over Brauer graph algebrasApr 19 2015Apr 18 2016Using only the combinatorics of its defining ribbon graph, we classify the two-term tilting complexes, as well as their indecomposable summands, of a Brauer graph algebra. As an application, we determine precisely the class of Brauer graph algebras which ... More
First study of η_c, η(1760) and X(1835) production via η'π^+π^- final states in two-photon collisionsJun 22 2012Jun 25 2012The invariant mass spectrum of the \eta' \pi^+ \pi^- final state produced in two-photon collisions is obtained using a 673 fb^{-1} data sample collected in the vicinity of the \Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric-energy ... More
Measurement of the decay $B^0\toπ^-\ell^+ν$ and determination of $|V_{ub}|$Dec 01 2010Jan 28 2011We present a measurement of the charmless semileptonic decay $B^0\to\pi^-\ell^+\nu$ using a data sample containing 657$\times 10^6$ $B\bar{B}$ events collected with the Belle detector at the KEKB asymmetric-energy $e^+e^-$ collider operating near the ... More
Search for CP violating charge asymmetry in B^+ -> J/psi K^+ decaysAug 30 2010Sep 13 2010We present the result of a search for charge asymmetry in B^+ -> J/psi K^+ decays. The CP-violating charge asymmetry is measured to be A_CP(B^+ -> J/psi K^+) = [-0.76 +/- 0.50 (stat) +/- 0.22 (syst)]%.
Search for CP violating charge asymmetry in B^+ -> J/psi K^+ decaysAug 16 2010Nov 12 2010We present the result of a search for charge asymmetry in B^+ -> J/psi K^+ decays. The CP-violating charge asymmetry is measured to be A_CP(B^+ -> J/psi K^+) = [-0.76 +/- 0.50 (stat) +/- 0.22 (syst)]%.
Measurement of CP violating asymmetries in B^0 -> K^+K^- K^0_S decays with a time-dependent Dalitz approachJul 22 2010Sep 24 2010We report a measurement of $CP$ violating asymmetries in $B^0(\overline{B}^0) \to K^+ K^- K^0_S$ decays with a time-dependent Dalitz approach. This analysis is based on a data sample of $657\times 10^6$ $B\overline{B}$ pairs accumulated at the $\Upsilon(4S)$ ... More
Feedback Regulation and its Efficiency in Biochemical NetworksMay 08 2015Intracellular biochemical networks fluctuate dynamically due to various internal and external sources of fluctuation. Dissecting the fluctuation into biologically relevant components is important for understanding how a cell controls and harnesses noise ... More
Pulse Dynamics in Coupled Excitable FIbers: Soliton-like Collision, Recombination, and OvertakingOct 30 2006We study the dynamics of a reaction-diffusion system composed of two mutually coupled excitable fibers. We focus on the situation in which dynamical properties of the two fibers are not identical because of the parameter difference between the fibers. ... More
Measurement of $e^+e^- \to γχ_{cJ}$ via initial state radiation at BelleJun 17 2015Jul 07 2015The process $e^+e^- \to \gamma\chi_{cJ}$ ($J$=1, 2) is studied via initial state radiation using 980 fb$^{-1}$ of data at and around the $\Upsilon(nS)$ ($n$=1, 2, 3, 4, 5) resonances collected with the Belle detector at the KEKB asymmetric-energy $e^+e^-$ ... More
Search for CP Violation in D Meson Decays to phi pi+Oct 04 2011Oct 07 2011We search for CP violation in Cabibbo-suppressed charged D meson decays by measuring the difference between the CP violating asymmetries for the Cabibbo-suppressed decays D+ -> K+K-pi+ and the Cabibbo-favored decays Ds -> K+K-pi+ in the K+K- mass region ... More
Master equation approach to line shape in dissipative systemsMay 14 2009Aug 13 2009We propose a formulation to obtain the line shape of a magnetic response with dissipative effects that directly reflects the nature of the environment. Making use of the fact that the time evolution of a response function is described by the same equation ... More
Purely electronic THz polarization in dimer Mott insulatorsMar 24 2010We theoretically discover purely electronic polarization modes in THz frequency region in dimer Mott insulators $\kappa$-(BEDT-TTF)$_2$X. The unusual low-frequency modes arise from the coupling between the oscillation of intradimer electric dipole moments ... More
Chaotic Phase Synchronization in Bursting-neuron Models Driven by a Weak Periodic ForceJun 28 2012We investigate the entrainment of a neuron model exhibiting a chaotic spiking-bursting behavior in response to a weak periodic force. This model exhibits two types of oscillations with different characteristic time scales, namely, long and short time ... More
Non-Gaussian power grid frequency fluctuations characterized by Lévy-stable laws and superstatisticsJul 23 2018Multiple types of fluctuations impact the collective dynamics of power grids and thus challenge their robust operation. Fluctuations result from processes as different as dynamically changing demands, energy trading, and an increasing share of renewable ... More
Balancing specificity, sensitivity and speed of ligand discrimination by zero-order ultraspecificityNov 17 2016Specific interactions between receptors and their target ligands in the presence of non-target ligands are crucial for biological processes such as T cell ligand discrimination. To discriminate between the target and non-target ligands, cells have to ... More
Contribution of hidden modes to nonlinear epidemic dynamics in urban human proximity networksDec 07 2015Recently developed techniques to acquire high-quality human mobility data allow large-scale simulations of the spread of infectious diseases with high spatial and temporal resolution.Analysis of such data has revealed the oversimplification of existing ... More
Study of $\mathbf{B^{0}\rightarrowρ^{+}ρ^{-}}$ decays and implications for the CKM angle $\mathbf{φ_2}$Oct 05 2015Oct 01 2016We present a measurement of the branching fraction and the longitudinal polarization fraction of $B^{0}\rightarrow\rho^+\rho^-$ decays, as well as the time-dependent $CP$ violating parameters in decays into longitudinally polarized $\rho^{+}\rho^{-}$ ... More
First Observation of Cabibbo-Suppressed Ξ_c^0 DecaysJun 25 2013Oct 18 2013We report the first observation of the Cabibbo-suppressed decays $\Xi_c^0\rightarrow \Xi^- K^+$, $\Xi_c^0\ra\Lambda K^+ K^-$ and $\Xi_c^0\rightarrow \Lambda \phi$, using a data sample of $711\, \mathrm{fb}^{-1}$ collected at the $\Upsilon(4S)$ resonance ... More
Semi-inclusive studies of semileptonic $B_s$ decays at BelleApr 08 2015Sep 29 2015We present an analysis of the semi-inclusive decays $B_s \to D_s^- X \ell^+ \nu$ and $B_s \to D_s^{*-} X \ell^+ \nu$, where $X$ denotes a final state that may consist of additional hadrons or photons and $\ell$ is an electron or muon. The studied $B_s$ ... More
Search for heavy neutrinos at BelleJan 07 2013Apr 25 2013We report on a search for heavy neutrinos in B-meson decays. The results are obtained using a data sample that contains 772x10^6 BB-bar pairs collected at the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. No ... More
Slowing and stopping of chemical waves in a narrowing canalJul 07 2004Feb 27 2005The propagation of a chemical wave in a narrow, cone-shaped glass capillary was investigated. When a chemical wave propagates from the wider end to the narrower end, it slows, stops, and then disappears. A phenomenological model that considers the surface ... More
Tau functions of KP solitons realized in Wiener spaceAug 03 2011In this paper, a probabilistic representation of the tau functions of KP (Kadomtsev-Petviashvili) solitons in terms of stochastic areas will be presented.
Dimensions of triangulated categories with respect to subcategoriesApr 28 2012Sep 30 2013This paper introduces the concept of the dimension of a triangulated category with respect to a fixed full subcategory. For the bounded derived category of an abelian category, upper bounds of the dimension with respect to a contravariantly finite subcategory ... More
Study of $K^0_S$ pair production in single-tag two-photon collisionsDec 06 2017We report a measurement of the cross section for $K^0_S$ pair production in single-tag two-photon collisions, $\gamma^* \gamma \to K^0_S K^0_S$, for $Q^2$ up to 30 GeV$^2$, where $Q^2$ is the negative of the invariant mass squared of the tagged photon. ... More
Observation of an alternative $χ_{c0}(2P)$ candidate in $e^+ e^- \rightarrow J/ψD \bar{D}$Apr 06 2017Jun 19 2017We perform a full amplitude analysis of the process $e^+ e^- \rightarrow J/\psi D \bar{D}$, where $D$ refers to either $D^0$ or $D^+$. A new charmoniumlike state $X^*(3860)$ that decays to $D \bar{D}$ is observed with a significance of $6.5\sigma$. Its ... More
Observation of $B^{0} \rightarrow p\barΛ D^{(*)-}$Sep 10 2015Nov 11 2015We report the first observation of the decays $B^0 \rightarrow p\bar{\Lambda} D^{(*)-}$. The data sample of $711$ fb$^{-1}$ used in this analysis corresponds to $772$ million $B\bar{B}$ pairs, collected at the $\Upsilon(4S)$ resonance by the Belle detector ... More
Measurements of branching fractions of leptonic and hadronic Ds+ meson decays and extraction of the Ds+ meson decay constantJul 23 2013Oct 01 2013We present measurements of absolute branching fractions of hadronic and leptonic Ds+ decays to K- K+ pi+, anti-K0 K+, eta pi+, mu+ nu_mu and tau+ nu_tau and report a search for the leptonic Ds+ to e+ nu_e decays. The results are obtained from a data sample ... More
Measurements of $B\rightarrow \bar{D} D_{s0} ^{*+}(2317)$ decay rates and a search for isospin partners of the $D_{s0}^{*+} (2317)$Apr 10 2015Aug 06 2015We report improved measurements of the product branching fractions ${\mathcal B}(B^+\rightarrow\bar{D}^0 D_{s0}^{*+} (2317))\times{\mathcal B}( D_{s0} ^{*+}(2317)\rightarrow D_s^{+}\pi^0) =(8.0^{+1.3}_{-1.2} \pm 1.1 \pm 0.4)\times 10^{-4}$ and ${\mathcal ... More
Measurement of the branching fraction of B^+ -> tau^+ nu_tau decays with the semileptonic tagging methodMar 18 2015Sep 07 2015We report a measurement of the branching fraction of B^+ -> tau^+ nu_tau decays using a data sample of 772 x 10^6 BBbar pairs, collected at the Y(4S) resonance with the Belle detector at the KEKB asymmetric-energy e^+e^- collider. We reconstruct the accompanying ... More
Evidence for B- -> Ds+ K- l- nubar and search for B- -> Ds*+ K- l- nubarJul 26 2012Oct 04 2012We report measurements of the decays B- -> Ds(*)+ K- l- nubar in a data sample containing 657x10^6 BBbar pairs collected with the Belle detector at the KEKB asymmetric-energy e+e- collider. We observe a signal with a significance of 6 sigma for the combined ... More
Study of $η$ and dipion transitions in $Υ(4S)$ decays to lower bottomoniaJul 17 2017Sep 13 2017We study hadronic transitions between bottomonium states using 496 fb$^{-1}$ data collected at the $\Upsilon(4S)$ resonance with the Belle detector at the KEKB asymmetric energy $e^{+}e^{-}$ collider. We measure: ${\cal B}(\Upsilon(4S)\to\pi^+\pi^-\Upsilon(1S))=(8.2\pm ... More
First measurement of $\boldsymbol{T}$-odd moments in $\boldsymbol{D^{0} \rightarrow K_{S}^{0} π^{+} π^{-} π^{0}}$ decaysMar 16 2017We report the first measurement of the $T$-odd moments in the decay $D^{0} \rightarrow K_{S}^{0} \pi^{+} \pi^{-} \pi^{0}$ from a data sample corresponding to an integrated luminosity of $966\,{\rm fb}^{-1}$ collected by the Belle experiment at the KEKB ... More
Observation of $X(3872)$ in $B \to X(3872) Kπ$ decaysJan 27 2015Sep 10 2015We report the first observation of $B^0 \to X(3872) (K^{+}\pi^{-})$ and evidence for $B^+ \to X(3872) (K^{0}\pi^{+})$. We measure the product of branching fractions for the former to be ${\cal B}(B^0 \to X(3872) (K^+ \pi^-)) \times {\cal B}(X(3872) \to ... More
First observation of exclusive $Υ(1S)$ and $Υ(2S)$ decays into light hadronsMay 06 2012Jul 24 2012Using samples of 102 million $\Upsilon(1S)$ and 158 million $\Upsilon(2S)$ events collected with the Belle detector, we study exclusive hadronic decays of these two bottomonium resonances to the three-body final states $\phi K^+ K^-$, $\omega \pi^+ \pi^-$ ... More
Measurement of the Decays $Λ_c\to Σππ$ at BelleFeb 09 2018We report measurements of the branching fractions of the decays $\Lambda^+_c\to\Sigma^+\pi^-\pi^+$, $\Lambda^+_c\to\Sigma^0\pi^+\pi^0$ and $\Lambda^+_c\to\Sigma^+\pi^0\pi^0$ relative to the reference channel $\Lambda^+_c\to pK^-\pi^+$. The analysis is ... More
Search for CP violation in D^0 -> pi^0 pi^0 decaysApr 04 2014Jul 15 2014We search for CP violation in neutral charm meson decays using a data sample with an integrated luminosity of 966 fb^-1 collected with the Belle detector at the KEKB e+e- asymmetric-energy collider. The asymmetry obtained in the rate of D^0 and D^0-bar ... More
Search for the $B \to Y(4260) K, ~Y(4260) \to J/ψπ^+π^-$ decaysJan 19 2019Feb 07 2019We report the results of a search for the $B \to Y(4260) K, ~Y(4260)\to J/\psi\pi^+\pi^-$ decays. This study is based on a data sample corresponding to an integrated luminosity of 711~fb$^{-1}$, collected at the $\Upsilon(4S)$ resonance with the Belle ... More
Observation of $Ξ(1620)^0$ and evidence for $Ξ(1690)^0$ in $Ξ_c^+ \rightarrow Ξ^-π^+π^+$ decaysOct 15 2018We report the first observation of the doubly-strange baryon $\Xi(1620)^0$ in its decay to $\Xi^-\pi^+$ via $\Xi_c^+ \rightarrow \Xi^- \pi^+ \pi^+$ decays based on a $980\,{\rm fb}^{-1}$ data sample collected with the Belle detector at the KEKB asymmetric-energy ... More
Measurements of the absolute branching fractions of $B^{+} \to X_{c\bar{c}} K^{+}$ and $B^{+} \to \bar{D}^{(\ast) 0} π^{+} $ at BelleSep 18 2017May 24 2018We present the measurement of the absolute branching fractions of $B^{+} \to X_{c\bar{c}} K^{+}$ and $B^{+} \to \bar{D}^{(\ast) 0} \pi^{+} $ decays, using a data sample of $772\times10^{6}$ $B\bar{B}$ pairs collected at the $\Upsilon(4S)$ resonance with ... More
Observation of $D^0-\bar{D}^0$ Mixing in $e^+e^-$ CollisionsJan 15 2014Mar 20 2014We observe $D^0-\bar{D}^0$ mixing in the decay $D^0\rightarrow K^+\pi^-$ using a data sample of integrated luminosity 976 fb$^{-1}$ collected with the Belle detector at the KEKB $e^+e^-$ asymmetric-energy collider. We measure the mixing parameters ${x'}^2 ... More
Search for B0 to p Lambdabar pi- gamma at BelleDec 16 2013We search for the charmless B^0 decay with final state particles p Lambdabar pi^- gamma using the full data sample that contains 772 * 10^6 B Bar pairs collected at the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric-energy e^+ e^- ... More
Transverse momentum dependent production cross sections of charged pions, kaons and protons produced in inclusive $e^+e^-$ annihilation at $\sqrt{s}=$ 10.58 GeVFeb 05 2019Feb 06 2019We report measurements of the production cross sections of charged pions, kaons, and protons as a function of fractional energy, the event-shape variable called thrust, and the transverse momentum with respect to the thrust axis. These measurements access ... More
Observation of $Ξ_{c}(2930)^0$ and updated measurement of $B^{-} \to K^{-} Λ_{c}^{+} \barΛ_{c}^{-}$ at BelleDec 10 2017Sep 06 2018We report the first observation of the $\Xi_{c}(2930)^0$ charmed-strange baryon with a significance greater than 5$\sigma$. The $\Xi_{c}(2930)^0$ is found in its decay to $K^- \Lambda_{c}^+$ in $B^{-} \to K^{-} \Lambda_{c}^{+} \bar{\Lambda}_{c}^{-}$ decays. ... More
Search for B+ -> l+ nu gamma decays with hadronic tagging using the full Belle data sampleApr 22 2015We search for the decay B+ -> l+ nu gamma with l+ = e+ or mu+ using the full Belle data set of 772 x 10^6 BBbar pairs, collected at the Y(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. We reconstruct one B meson in ... More
Theoretical Study of Lithium Ionic Conductors by Electronic Stress Tensor Density and Electronic Kinetic Energy DensityAug 16 2016We analyze the electronic structure of lithium ionic conductors, ${\rm Li_3PO_4}$ and ${\rm Li_3PS_4}$, using the electronic stress tensor density and kinetic energy density with special focus on the ionic bonds among them. We find that, as long as we ... More
Evidence for the decay $B^{0}\to ηη$Sep 12 2016We report a search for $B^{0}\to \eta \eta $ 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 $\Upsilon(4S)$ resonance with the Belle detector at the ... More
Measurement of the $τ$ lepton polarization in the decay ${\bar B} \rightarrow D^* τ^- {\bar ν_τ}$Aug 23 2016We report the first measurement of the $\tau$ lepton polarization in the decay ${\bar B} \rightarrow D^* \tau^- {\bar\nu_{\tau}}$ as well as a new measurement of the ratio of the branching fractions $R(D^{*}) = \mathcal{B}({\bar B} \rightarrow D^* \tau^- ... More
Belle II Technical Design ReportNov 01 2010The Belle detector at the KEKB electron-positron collider has collected almost 1 billion Y(4S) events in its decade of operation. Super-KEKB, an upgrade of KEKB is under construction, to increase the luminosity by two orders of magnitude during a three-year ... More
Precise determination of the CKM matrix element $\left| V_{cb}\right|$ with $\bar B^0 \to D^{*\,+} \, \ell^- \, \bar ν_\ell$ decays with hadronic tagging at BelleFeb 06 2017Feb 14 2017The precise determination of the CKM matrix element $\left| V_{cb}\right|$ is important for carrying out tests of the flavour sector of the Standard Model. In this article we present a preliminary analysis of the $\bar B^0 \to D^{*\,+} \, \ell^- \, \bar ... More
Aggregation of self-propelled colloidal rods near confining wallsSep 03 2008Non-equilibrium collective behavior of self-propelled colloidal rods in a confining channel is studied using Brownian dynamics simulations and dynamical density functional theory. We observe an aggregation process in which rods self-organize into transiently ... More
Future Opportunities in Accelerator-based Neutrino PhysicsDec 17 2018Jan 17 2019This document summarizes the conclusions of the Neutrino Town Meeting held at CERN in October 2018 to review the neutrino field at large with the aim of defining a strategy for accelerator-based neutrino physics in Europe. The importance of the field ... More
Study of χ_{bJ}(1P) Properties in the Radiative Υ(2S) DecaysJun 03 2016We report a study of radiative decays of \chi_{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 ... More
Measurement of the branching ratio of $\bar{B}^0 \rightarrow D^{*+} τ^- \barν_τ$ relative to $\bar{B}^0 \rightarrow D^{*+} \ell^- \barν_{\ell}$ decays with a semileptonic tagging methodMar 22 2016We report a measurement of ratio ${\cal R}(D^*) = {\cal B}(\bar{B}^0 \rightarrow D^{*+} \tau^- \bar{\nu}_{\tau})/{\cal B}(\bar{B}^0 \rightarrow D^{*+} \ell^- \bar{\nu}_{\ell})$, where $\ell$ denotes an electron or a muon. The results are based on a data ... More
Angular analysis of $B^0 \to K^\ast(892)^0 \ell^+ \ell^-$Apr 14 2016Apr 16 2016We present a measurement of angular observables, $P_4'$, $P_5'$, $P_6'$, $P_8'$, in the decay $B^0 \to K^\ast(892)^0 \ell^+ \ell^-$, where $\ell^+\ell^-$ is either $e^+e^-$ or $\mu^+\mu^-$. The analysis is performed on a data sample corresponding to an ... More
Observation of Transverse $Λ/\barΛ$ Hyperon Polarization in $e^+e^-$ Annihilation at BelleNov 21 2016We report the first observation of the polarization of $\Lambda/\bar{\Lambda}$ hyperons transverse to its production plane in $e^+e^-$ annihilation. We observe a significant polarization that rises with the fractional energy carried by the hyperon as ... More
Measurement of CKM Matrix Element $|V_{cb}|$ from $\bar{B} \to D^{*+} \ell^{-} \barν_\ell$Sep 10 2018Nov 19 2018We present a new measurement of the CKM matrix element $|V_{cb}|$ from $ B^{0} \rightarrow D^{*}\ell \nu$ decays, reconstructed with full Belle data set ($711 \, \rm fb^{-1}$). Two form factor parameterisations, based on work by the CLN and BGL groups, ... More
Emergent states in dense systems of active rods: from swarming to turbulenceApr 02 2012Dense suspensions of self-propelled rod-like particles exhibit a fascinating variety of non-equilibrium phenomena. By means of computer simulations of a minimal model for rigid self-propelled colloidal rods with variable shape we explore the generic diagram ... More
Rhythmic cluster generation in strongly driven colloidal dispersionsJun 28 2006We study the response of a nematic colloidal dispersion of rods to a driven probe particle which is dragged with high speed through the dispersion perpendicular to the nematic director. In front of the dragged particle, clusters of rods are generated ... More
Study of Two-Body $e^+e^- \to B_s^{(*)}\bar{B}_s^{(*)}$ Production in the Energy Range from 10.77 to 11.02 GeVSep 28 2016We report results on the studies of the $e^+e^-\to B_s^{(*)}\bar{B}_s^{(*)}$ processes. The results are based on a $121.4$ fb$^{-1}$ data sample collected with the Belle detector at the center-of-mass energy near the $\Upsilon(10860)$ peak and $16.4$ ... More
Measurement of $CP$ asymmetry in the $D^{0} \to K^0_S K^0_S$ decay at BelleSep 21 2016We report a measurement of the time-integrated $CP$ asymmetry in the neutral charm meson decay $D^0 \to K^0_S K^0_S$ using 921~fb$^{-1}$ data collected at the $\Upsilon(4S)$ and $\Upsilon(5S)$ resonances with the Belle detector at the KEKB asymmetric-energy ... More
Subaru weak-lensing measurement of a z = 0.81 cluster discovered by the Atacama Cosmology Telescope SurveySep 20 2012We present a Subaru weak lensing measurement of ACT-CL J0022.2-0036, one of the most luminous, high-redshift (z=0.81) Sunyaev-Zel'dovich (SZ) clusters discovered in the 268 deg^2 equatorial region survey of the Atacama Cosmology Telescope. For the weak ... More