A5068448195- Particle physics theoretical and experimental studies
- Quantum Chromodynamics and Particle Interactions
- High-Energy Particle Collisions Research
- Particle Detector Development and Performance
- Dark Matter and Cosmic Phenomena
- Particle Accelerators and Free-Electron Lasers
- Astrophysics and Cosmic Phenomena
- Superconducting Materials and Applications
- Cosmology and Gravitation Theories
- Nuclear physics research studies
- Neutrino Physics Research
- Distributed and Parallel Computing Systems
- Radiation Detection and Scintillator Technologies
- Atomic and Subatomic Physics Research
- Computational Physics and Python Applications
- Medical Imaging Techniques and Applications
- Gamma-ray bursts and supernovae
- Particle accelerators and beam dynamics
- Black Holes and Theoretical Physics
- Crystallization and Solubility Studies
- X-ray Diffraction in Crystallography
- Atomic and Molecular Physics
- Radio Astronomy Observations and Technology
- Mass Spectrometry Techniques and Applications
- Advanced Data Storage Technologies
High Energy Accelerator Research Organization
2013-2022
Osaka Metropolitan University
2022
Obayashi (Japan)
2021
Nagoya University
1987-2021
Kyoto Institute of Technology
2021
The University of Tokyo
1993-2017
SLAC National Accelerator Laboratory
1989-2017
The Graduate University for Advanced Studies, SOKENDAI
2017
Deutsches Elektronen-Synchrotron DESY
2017
Kavli Institute for the Physics and Mathematics of the Universe
2017
We present a measurement of the standard model $\mathrm{CP}$ violation parameter $\mathrm{sin}2{\ensuremath{\varphi}}_{1}$ based on $29.1{\mathrm{fb}}^{\ensuremath{-}1}$ data sample collected at $\ensuremath{\Upsilon}(4S)$ resonance with Belle detector KEKB asymmetric-energy ${e}^{+}{e}^{\ensuremath{-}}$ collider. One neutral $B$ meson is fully reconstructed as $J/\ensuremath{\psi}{K}_{S}$, $\ensuremath{\psi}(2S){K}_{S}$, ${\ensuremath{\chi}}_{c1}{K}_{S}$, ${\ensuremath{\eta}}_{c}{K}_{S}$,...
The Telescope Array (TA) experiment, located in the western desert of Utah,USA, is designed for observation extensive air showers from extremely high energy cosmic rays. experiment has a surface detector array surrounded by three fluorescence detectors to enable simultaneous detection shower particles at ground level and photons along track. TA started full hybrid March, 2008. In this article we describe design technical features detector.
The Telescope Array (TA) collaboration has measured the energy spectrum of ultra-high cosmic rays with primary energies above 1.6 x 10^(18) eV. This measurement is based upon four years observation by surface detector component TA. shows a dip at an 4.6 eV and steepening 5.4 10^(19) which consistent expectation from GZK cutoff. We present results technique, new to analysis ray data, that involves generating complete simulation striking TA detector. procedure starts shower simulations using...
This report summarizes the work of Energy Frontier Higgs Boson working group 2013 Community Summer Study (Snowmass). We identify key elements a precision physics program and document potential future experimental facilities as elucidated during Snowmass study. study couplings to gauge boson fermion pairs, double production for self-coupling, its quantum numbers $CP$-mixing in couplings, mass total width, prospects direct searches additional bosons extensions Standard Model. Our includes...
The ILC Technical Design Report documents the design for construction of a linear collider which can be operated at energies up to 500 GeV. This report summarizes outcome study possible running scenarios, including realistic estimate real time accumulation integrated luminosity based on ramp-up and upgrade processes. evolution physics outcomes is emphasized, initially GeV, then 350 GeV 250 scenarios have been chosen optimize Higgs precision measurements top while searching evidence signals...
Predictions for charged hadron, identified light quarkonium, photon, jet and gauge bosons in p+ Pb collisions at [Formula: see text] are compiled compared. When test run data available, they compared to the model predictions.
The International Linear Collider is now proposed with a staged machine design, the first stage at 250 GeV luminosity goal of 2 ab-1. In this paper, we review physics expectations for machine. These include precision measurements Higgs boson couplings, searches exotic decays, other particles that decay zero or small visible energy, and e+e- annihilation to W+W- 2-fermion states improved sensitivity. A summary table gives projections achievable levels based on latest full simulation studies.
Future ${e}^{+}{e}^{\ensuremath{-}}$ colliders give the promise of model-independent determinations couplings Higgs boson. In this paper, we present an improved formalism for extracting boson from data, based on effective field theory description corrections to Standard Model. We apply projections coupling accuracies stages International Linear Collider and other proposed colliders.
We report the observation of a narrow peak in K(S)K-pi(+) invariant mass distribution sample exclusive B-->KK(S)K-pi(+) decays collected with Belle detector at KEKB asymmetric e(+)e(-) collider. The measured is M=3654+/-6(stat)+/-8(syst) MeV/c(2), and we place 90% confidence level upper limit on width Gamma<55 MeV/c(2). properties agree heavy-quark potential model expectations for eta(c)(2S) meson, n=2 singlet S charmonium state.
We report evidence for direct CP violation in the decay B0-->K+pi(-) with 253 fb(-1) of data collected Belle detector at KEKB e(+)e(-) collider. Using 275x10(6) BB pairs we observe a B-->K+/-pi(-/+) signal 2140+/-53 events. The measured violating asymmetry is A(CP)(K+pi(-))=-0.101+/-0.025(stat)+/-0.005(syst), corresponding to significance 3.9sigma including systematics. also search decays B+-->K+pi(0) and B+-->pi(+)pi(0). asymmetries are A(CP)(K+pi(0))=0.04+/-0.05(stat)+/-0.02(syst)...
The muon momentum spectrum in ${K}_{\ensuremath{\mu}2}$ decay has been measured by using a high-resolution magnetic spectrograph to look for discrete peak associated with heavy-neutrino emission. revealed no distinct peak, and the upper bound of mixing ratio between neutrino massive determined be ${10}^{\ensuremath{-}4}$-${10}^{\ensuremath{-}6}$ mass range 70-300 MeV/${\mathit{c}}^{2}$.
The absorption cross sections and the differential elastic-scattering of antiprotons on carbon, aluminum, copper nuclei were systematically measured at six beam momenta between 470 880 MeV/c. From these data, antiproton-nucleus optical potential was derived for first time.
We present an overview of the capabilities that International Linear Collider (ILC) offers for precision measurements probe Standard Model. First, we discuss improvements ILC will make in electroweak observables, both from W boson production and radiative return to Z at 250 GeV center mass a dedicated GigaZ stage running pole. then new results on fermion pair production, including b t quarks. update projections determination Higgs couplings through Model Effective Field Theory fit taking...
The ILD detector is proposed for an electron-positron collider with collision centre-of-mass energies from 90~\GeV~to about 1~\TeV. It has been developed over the last 10 years by international team of scientists goal to design and eventually propose a fully integrated detector, primarily International Linear Collider, ILC. In this report fundamental ideas concepts behind are discussed technologies needed realisation reviewed. document starts short review science goals ILC, how can be...
We discuss a possible strategy for supersymmetry searches and studies at future linear ${\mathit{e}}^{+}$${\mathit{e}}^{\mathrm{\ensuremath{-}}}$ colliders. demonstrate their effectiveness by Monte Carlo analyses with full angular correlations under realistic experimental conditions including initial state radiation beamstrahlung effects. The importance of precision measurements parameters is emphasized. that the on mass can be as good 1% leptonic 3% hadronic final states. A detailed study...
We report the observation of decay mode ${B}^{\ifmmode\pm\else\textpm\fi{}}\ensuremath{\rightarrow}p\overline{p}{K}^{\ifmmode\pm\else\textpm\fi{}}$ based on an analysis $29.4{\mathrm{fb}}^{\ensuremath{-}1}$ data collected by Belle detector at KEKB. This is first example a $b\ensuremath{\rightarrow}s$ transition with baryons in final state. The $p\overline{p}$ mass spectrum this inconsistent phase space and peaked low mass. branching fraction for measured to be...