A5088764845- Particle physics theoretical and experimental studies
- Quantum Chromodynamics and Particle Interactions
- High-Energy Particle Collisions Research
- Neutrino Physics Research
- Computational Physics and Python Applications
- Particle Accelerators and Free-Electron Lasers
- Particle Detector Development and Performance
- Dark Matter and Cosmic Phenomena
- Black Holes and Theoretical Physics
- Superconducting Materials and Applications
- Medical Imaging Techniques and Applications
- Astrophysics and Cosmic Phenomena
- Atomic and Subatomic Physics Research
- Distributed and Parallel Computing Systems
- Particle accelerators and beam dynamics
- Physics of Superconductivity and Magnetism
- Nuclear physics research studies
- Scientific Computing and Data Management
- Frequency Control in Power Systems
- Nuclear Physics and Applications
- Muon and positron interactions and applications
- High-pressure geophysics and materials
- Advanced NMR Techniques and Applications
- Cosmology and Gravitation Theories
- Field-Flow Fractionation Techniques
Japan Aerospace Exploration Agency
2024
High Energy Accelerator Research Organization
2014-2023
The Graduate University for Advanced Studies, SOKENDAI
2014-2023
University of Cincinnati
2014-2023
University of the Basque Country
2014-2022
Campbell Collaboration
2012-2022
Duke University
2022
University of Bonn
2014-2022
Chonnam National University
2018-2022
Beihang University
2014-2018
This work is on the Physics of B Factories. Part A this book contains a brief description SLAC and KEK Factories as well their detectors, BaBar Belle, data taking related issues. discusses tools methods used by experiments in order to obtain results. The results themselves can be found C. Please note that version 3 archive auxiliary book. uses notation alpha, beta, gamma for angles Unitarity Triangle. nominal phi_1, phi_2 phi_3. cite Eur. Phys. J. C74 (2014) 3026.
The Collins effect connects transverse quark spin with a measurable azimuthal asymmetry in the yield of hadronic fragments around quark's momentum vector. Using two different reconstruction methods we measure statistically significant asymmetries for charged pion pairs ${e}^{+}{e}^{\ensuremath{-}}$ annihilation at center-of-mass energies 10.52 GeV and 10.58 GeV, which can be attributed to fragmentation primordial quarks components. measurement was performed using data set $547\text{ }\text{...
The interference fragmentation function translates the of a quark with transverse projection spin into an azimuthal asymmetry two final-state hadrons. In e+e- annihilation product functions is measured. We report nonzero asymmetries for pairs charge-ordered pi+pi- pairs, which indicate significant in this channel. results are obtained from 672 fb-1 data sample that contains 711 \times 106 and was collected at near ?(4S) resonance, Belle detector KEKB asymmetric-energy collider.
We report results on time-dependent $CP$ asymmetries in $B\ensuremath{\rightarrow}{D}^{*\ensuremath{\mp}}{\ensuremath{\pi}}^{\ifmmode\pm\else\textpm\fi{}}$ decays based a data sample containing $657\ifmmode\times\else\texttimes\fi{}{10}^{6}$ $B\overline{B}$ pairs collected with the Belle detector at KEKB asymmetric-energy ${e}^{+}{e}^{\ensuremath{-}}$ collider $\ensuremath{\Upsilon}(4S)$ resonance. use partial reconstruction technique, wherein signal events are identified using information...
2-dimensional position sensitive detectors are used for pulsed neutron imaging and at each pixel of the detector a time flight spectrum is recorded. Therefore, transmission through object has wavelength dependent structure reflecting total cross section. For such measurements, required to have ability store events as function well good spatial resolution. Furthermore, high counting rate also intensity sources like J-PARC source in Japan. We developed several types with different...
The mapping of the magnetic field Belle detector's large superconducting solenoid is described. was done with accelerator magnets located inside excited to their nominal values. To cope geometrical constraints, we developed a novel moving mechanism for probes that uses an ultrasonic motor in strong field.
The SuperKEKB B-Factory at KEK (Japan), after few years of shutdown for the construction and renovation, has finally come to Phase-1 commissioning LER HER rings, without final focus system Belle II detector. Vacuum scrubbing, optics tuning beam related background measurements were performed in this phase. Low emittance techniques have also been applied order set up rings Phase-2 with colliding beams next year. An update construction, as well status injection new positron damping ring high...
The SuperKEKB accelerator and the Belle II detector are upgraded from successful KEKB /Belle project. first commissioning of was done in 2016 without II. constructed separately roll-in smoothly performed April 2017. collision events were finally recorded 2018. smaller spot measured as compared with bunch lengths beams. It indicates nano-beam is really working.
Recently, we have observed vertical betatron sidebands in the transverse beam spectra of positron bunches at KEKB LER which are associated with presence electron clouds.[1] When is operating single-beam mode (no colliding HER), these sharply peaked. collision for physics running, still present but found to be smeared out. The bunch-by-bunch specific luminosity lower than those without sidebands. In this paper, behavior and effects on discussed.
A neutron transmission image gives different features depending on energy. Therefore, energy-selective imaging has become increasingly popular for obtaining comprehensive information. Neutron using a pulsed source can offer much more easily than reactor source, since it use the time-of-flight method energy analysis. Furthermore, by analyzing spectrum we obtain physical quantities such as crystallographic information, elemental temperature, magnetic field, and so on. Such analysis method,...
The Belle experiment, running at the KEKB e+e- asymmetric energy collider during first decade of century, achieved its original objective measuring precisely differences between particles and anti-particles in B system. After collecting 1000 fb-1 data various Upsilon resonances, also obtained many other physics results described this article.