A5039401428- Particle physics theoretical and experimental studies
- Quantum Chromodynamics and Particle Interactions
- High-Energy Particle Collisions Research
- Particle Accelerators and Free-Electron Lasers
- Superconducting Materials and Applications
- Particle Detector Development and Performance
- Dark Matter and Cosmic Phenomena
- Nuclear Physics and Applications
- Atomic and Subatomic Physics Research
- Neutrino Physics Research
- Magnetic confinement fusion research
- Nuclear physics research studies
- Diamond and Carbon-based Materials Research
- Medical Imaging Techniques and Applications
- X-ray Spectroscopy and Fluorescence Analysis
- Distributed and Parallel Computing Systems
- Atomic and Molecular Physics
- Radiation Detection and Scintillator Technologies
- Computational Physics and Python Applications
- Radiation Therapy and Dosimetry
- Astrophysics and Cosmic Phenomena
- Radiopharmaceutical Chemistry and Applications
- Geophysics and Gravity Measurements
- Advanced Data Storage Technologies
- Advanced Chemical Physics Studies
RIKEN Nishina Center
2016-2024
Brookhaven National Laboratory
2006-2024
RIKEN BNL Research Center
2006-2024
University of California, Riverside
2023-2024
University of Illinois Urbana-Champaign
2005-2024
Christopher Newport University
2023
Cyprus Institute
2023
University of Cyprus
2023
Thomas Jefferson National Accelerator Facility
2023
Mississippi State University
2022
Time and again, spin has been a key element in the exploration of fundamental physics. Spin-dependent observables have often revealed deficits assumed theoretical framework led to novel developments concepts. Spin is exploited many parity-violating experiments searching for physics beyond Standard Model or studying nature nucleon-nucleon forces. The RHIC program plays special role this grand scheme: it uses study how complex many-body system such as proton arises from dynamics QCD. Many...
We perform the first global quantum chromodynamics (QCD) analysis of dihadron production for a comprehensive set data in electron-positron annihilation, semi-inclusive deep-inelastic scattering, and proton-proton collisions, from which we extract simultaneously transversity distributions nucleon π^{+}π^{-} fragmentation functions. incorporate our fits known theoretical constraints on transversity, namely, its small-x asymptotic behavior Soffer bound. furthermore show that lattice-QCD results...
We perform a comprehensive study within quantum chromodynamics (QCD) of dihadron observables in electron-positron annihilation, semi-inclusive deep-inelastic scattering, and proton-proton collisions, including recent cross section data from Belle azimuthal asymmetries STAR. extract simultaneously for the first time <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:msup><a:mi>π</a:mi><a:mo>+</a:mo></a:msup><a:msup><a:mi>π</a:mi><a:mo>−</a:mo></a:msup></a:math>...
We report measurements of production cross sections for <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:msup><a:mi>ρ</a:mi><a:mo>+</a:mo></a:msup></a:math>, <c:math xmlns:c="http://www.w3.org/1998/Math/MathML" display="inline"><c:msup><c:mi>ρ</c:mi><c:mn>0</c:mn></c:msup></c:math>, <e:math xmlns:e="http://www.w3.org/1998/Math/MathML" display="inline"><e:mi>ω</e:mi></e:math>, <g:math xmlns:g="http://www.w3.org/1998/Math/MathML"...
In this letter we study the impact of Electron-Ion Collider (EIC) on phenomenological extraction tensor charge from a QCD global analysis single transverse-spin asymmetries (SSAs). We generate EIC pseudo-data for Collins effect in semi-inclusive deep-inelastic scattering proton and $^{3\!}He$ beams across multiple center-of-mass energies. find significant reduction uncertainties up, down, isovector charges that will make their data SSAs as precise current lattice calculations. also analyze...
We perform a comprehensive study within quantum chromodynamics (QCD) of dihadron observables in electron-positron annihilation, semi-inclusive deep-inelastic scattering, and proton-proton collisions, including recent cross section data from Belle azimuthal asymmetries STAR. extract simultaneously for the first time $\pi^+\pi^-$ fragmentation functions (DiFFs) nucleon transversity distributions up down quarks as well antiquarks. For we impose their small-$x$ asymptotic behavior Soffer bound....
We perform the first global quantum chromodynamics (QCD) analysis of dihadron production for a comprehensive set data in electron-positron annihilation, semi-inclusive deep-inelastic scattering, and proton-proton collisions, from which we extract simultaneously transversity distributions nucleon $\pi^+\pi^-$ fragmentation functions. incorporate our fits known theoretical constraints on transversity, namely, its small-$x$ asymptotic behavior Soffer bound. furthermore show that lattice-QCD...
We have searched for the lepton flavor violating decays $\tau^-\to \ell^-\ks$ ($\ell = e {or} \mu$), using a data sample of 281 fb$^{-1}$ collected with Belle detector at KEKB $e^+e^-$ asymmetric-energy collider. No evidence signal was found in either decay modes, and we set following upper limits branching fractions: ${\cal{B}}(\tau^-\to e^-\ks) < 5.6\times 10^{-8}$ \mu^-\ks) 4.9\times 90% confidence level. These results improve previously published by CLEO collaboration factors 16 19, respectively.
The chiral‐odd fragmentation functions (FF) play an important role in the understanding of transverse structure nucleon. Additionally so‐called Collins FF seems to be closely connected QCD vacuum itself. HERMES has given a first hint that this is nonzero, however order measure quark transversity one needs these FFs precisely known. We have updated previous analysis from 29.0 fb−1 547 data collected by Belle experiment at KEKB e+e− collider azimuthal asymmetries for different charge...
A first measurement of the di-hadron interference fragmentation function light quarks in pion pairs with Belle detector is presented. The chiral odd nature this allows use as a quark polarimeter sensitive to transverse polarization fragmenting quark. Therefore it can be used together data taken at fixed target and collider experiments extract transversity distribution. sample consisting $711 \times 10^6$ was extracted from 661 $fb^{-1}$ recorded near $Υ(4S)$ resonance delivered by KEKB...
Single-spin asymmetries in semi-inclusive pion production are measured by the HERMES experiment for first time, with a transversely polarised hydrogen target. Two different sine-dependencies extracted which can be related to quark distributions transversity h_1(x) and Sivers function f_1T^perp(x).
Fragmentation functions describe how quasi-free, high energetic partons fragment into a number of confined final state hadrons.Traditionally, only inclusive hadron production in e + -annihilation was studied as function the hadrons scaled momentum or energy and mostly at collision energies around Z mass.Recently, both B factories published identified data near ϒ(4S) resonance which allow to extract gluon fragmentation from scaling violation between these energies.Also new precision...
The precision measurement of fragmentation functions is an important requirement to study the spin structure nucleon. Unpolarized at reasonably low scale and high fractional energy are necessary complement measurements mostly performed LEP in order obtain enough for semi‐inclusive DIS experiments RHIC. Those can be obtained from abundant data collected with Belle detector e+e− collider KEKB. In addition one cleanly measure transversely polarized such as Collins function interference...