A5103187034- Particle physics theoretical and experimental studies
- Quantum Chromodynamics and Particle Interactions
- High-Energy Particle Collisions Research
- Particle Detector Development and Performance
- Superconducting Materials and Applications
- Nuclear physics research studies
- Atomic and Subatomic Physics Research
- Particle Accelerators and Free-Electron Lasers
- Nuclear Physics and Applications
- Quantum, superfluid, helium dynamics
- Cold Atom Physics and Bose-Einstein Condensates
- Black Holes and Theoretical Physics
- Atomic and Molecular Physics
- Electron and X-Ray Spectroscopy Techniques
- Parallel Computing and Optimization Techniques
- Computational Physics and Python Applications
- Distributed and Parallel Computing Systems
- Advanced Chemical Physics Studies
- Physics of Superconductivity and Magnetism
- Quantum Computing Algorithms and Architecture
- Advanced NMR Techniques and Applications
- Solid-state spectroscopy and crystallography
- Quantum Information and Cryptography
- Radiation Detection and Scintillator Technologies
- X-ray Diffraction in Crystallography
Thomas Jefferson National Accelerator Facility
2014-2023
Ruhr West University of Applied Sciences
2017-2023
Mississippi State University
2022
University of Siegen
2007-2019
Johannes Gutenberg University Mainz
2016-2019
Ghent University
2019
University of Liverpool
2019
University of Vienna
2019
Eurostat
2016
University of Connecticut
2016
This White Paper presents the science case of an Electron-Ion Collider (EIC), focused on structure and interactions gluon-dominated matter, with intent to articulate it broader nuclear community. It was commissioned by managements Brookhaven National Laboratory (BNL) Thomas Jefferson Accelerator Facility (JLab) objective presenting a summary scientific opportunities goals EIC as follow-up 2007 NSAC Long Range plan. document is culmination community-wide effort in following series workshops...
This paper presents a comprehensive review of both the theory and experimental successes Quantum Chromodynamics, starting with its emergence as well defined in 1972-73 following developments results up to present day. Topics include earliest theoretical foundations; fundamental constants QCD; an introductory discussion lattice QCD, only known method for obtaining exact predictions from methods approximating special focus on effective field theories; QCD under extreme conditions; measurements...
This White Paper presents the science case of an Electron-Ion Collider (EIC), focused on structure and interactions gluon-dominated matter, with intent to articulate it broader nuclear community. It was commissioned by managements Brookhaven National Laboratory (BNL) Thomas Jefferson Accelerator Facility (JLab) objective presenting a summary scientific opportunities goals EIC as follow-up 2007 NSAC Long Range plan. document is culmination community-wide effort in following series workshops...
We study the off-forward quark distributions (OFQD's) in chiral quark-soliton model of nucleon. This is based on large-N_c picture nucleon as a soliton effective lagrangian and allows to calculate leading twist quark- antiquark at low normalization point. demonstrate consistency approach by checking various sum rules for OFQD's. present numerical estimates isosinglet distribution H(x,\xi,\Delta^2). In contrast other approaches we find strong qualitative dependence longitudinal momentum...
Coherent operations constitutive for the implementation of single and multi-qubit quantum gates with trapped ions are demonstrated that robust against variations in experimental parameters intrinsically indeterministic system parameters. In particular, pulses developed using optimal control theory first time ions. Their performance as a function error is systematically investigated compared to composite pulses.
We extract the proton charge radius from elastic form factor (FF) data using a novel theoretical framework combining chiral effective field theory and dispersion analysis. Complex analyticity in momentum transfer correlates behavior of spacelike FF at finite ${Q}^{2}$ with derivative ${Q}^{2}=0$. The calculated predictive contains as free parameter. determine its value by comparing predictions descriptive global fit data, taking into account experimental uncertainties. Our method allows us...
We propose a new method to determine at what transverse momenta particle production in high-energy $pp$ collisions is governed by hard parton-parton processes. Using information on the spatial distribution of partons obtained from exclusive processes $ep/\ensuremath{\gamma}p$ scattering, we evaluate impact parameter with process as function ${p}_{T}$ produced parton (jet). find that average parameters such events depend very weakly range $2<{p}_{T}<\mathrm{\text{few}}\text{ }100\text{...
We construct a chiral Lagrangian containing, in addition to the usual pion field $(\ensuremath{\pi})$, also its first radial excitation $({\ensuremath{\pi}}^{\ensuremath{'}})$. The is derived large-${N}_{c}$ limit from Nambu--Jona-Lasinio (NJL) quark model with separable nonlocal interactions, form factors corresponding three-dimensional ground- and excited-state wave functions. Chiral symmetry breaking governed by NJL gap equation. effective for $\ensuremath{\pi}$...
This report presents a brief summary of the science opportunities and program polarized medium energy electron-ion collider at Jefferson Lab comprehensive description conceptual design such based on CEBAF electron accelerator facility.
We extract the proton magnetic radius from high-precision electron-proton elastic scattering cross section data. Our theoretical framework combines dispersion analysis and chiral effective field theory implements dynamics governing shape of low-${Q}^{2}$ form factors. It allows us to use data up ${Q}^{2}\ensuremath{\approx}0.5\phantom{\rule{4pt}{0ex}}{\mathrm{GeV}}^{2}$ for constraining radii overcomes difficulties empirical fits ${Q}^{2}\ensuremath{\rightarrow}0$ extrapolation. obtain a...
In the partonic (or light-front) description of relativistic systems electromagnetic form factors are expressed in terms frame-independent charge and magnetization densities transverse space. This formulation allows one to identify chiral components nucleon structure as peripheral at distances $ b=O\left( {\mathrm{M}_{\pi}^{-1 }} \right) compute them a parametrically controlled manner. A dispersion relation connects large-distance behavior spectral functions Dirac Pauli near two-pion...
We propose a method for calculating the nucleon form factors (FFs) of $G$-parity-even operators by combining Chiral Effective Field Theory ($χ$EFT) and dispersion analysis. The FFs are expressed as dispersive integrals over two-pion cut at $t > 4 M_π^2$. spectral functions obtained from elastic unitarity condition products complex $ππ\rightarrow N\bar N$ partial-wave amplitudes timelike pion FF. $χ$EFT is used to calculate ratio FF, which real free $ππ$ rescattering in $t$-channel ($N/D$...
The object of research is the processes transport logistics management under influence non-stationary factors different nature on functioning street-road networks (SRN) in cities. task dynamic routing at large and variable loading SRN sections solved by managing cargo delivery real time within framework implementation Smart Logistics concept. Simulation studies with real-time route updating using a modified ant colony algorithm data dynamics traffic flow (TF) were conducted an city Kyiv as...
We propose a new approach to the problem of rapidity gap survival (RGS) in production high-mass systems (H = dijet, heavy quarkonium, Higgs boson) double-gap exclusive diffractive pp scattering, -> p + (gap) H p. It is based on idea that hard and soft interactions proceed over widely different time- distance scales are thus approximately independent. The system produced scattering process with exchange two gluons between protons. Its amplitude calculable terms gluon generalized parton...
We study large-distance contributions to the nucleon's parton densities in transverse coordinate (impact parameter) representation based on generalized distributions (GPDs). Chiral dynamics generates a distinct component of partonic structure, located at momentum fractions x ~< M_pi/M_N and distances b ~ 1/M_pi. calculate this using phenomenological pion exchange with physical lower limit (the "core" radius estimated from axial form factor, R_core = 0.55 fm) demonstrate its universal...
We study the nucleon electromagnetic form factors (EM FFs) using a recently developed method combining chiral effective field theory ($\ensuremath{\chi}\mathrm{EFT}$) and dispersion analysis. The spectral functions on two-pion cut at $t>4{M}_{\ensuremath{\pi}}^{2}$ are constructed elastic unitarity relation an $N/D$ representation. $\ensuremath{\chi}\mathrm{EFT}$ is used to calculate real...
We present a theoretical parametrization of the nucleon electromagnetic form factors (FFs) based on combination chiral effective field theory and dispersion analysis. The isovector spectral functions two-pion cut are computed using elastic unitarity, pion-nucleon amplitudes, timelike pion FF data. Higher-mass isoscalar t-channel states described by poles, whose strength is fixed sum rules (charges, radii). Excellent agreement with spacelike proton neutron data achieved up to Q^2 \sim 1...
This volume is a collection of contributions for the 7-week program "Probing Nucleons and Nuclei in High Energy Collisions" that was held at Institute Nuclear Theory Seattle, WA, USA, from October 1 until November 16, 2018. The dedicated to physics Electron Ion Collider (EIC), world's first polarized electron-nucleon (ep) electron-nucleus (eA) collider be constructed USA. These proceedings are organized by chapters, corresponding weeks program: Week I, Generalized parton distributions; II,...