T. Ullrich
A5091697688- High-Energy Particle Collisions Research
- Particle physics theoretical and experimental studies
- Quantum Chromodynamics and Particle Interactions
- Nuclear reactor physics and engineering
- Particle Detector Development and Performance
- Nuclear physics research studies
- Stochastic processes and statistical mechanics
- X-ray Spectroscopy and Fluorescence Analysis
- Cold Atom Physics and Bose-Einstein Condensates
- Superconducting Materials and Applications
- Nuclear Physics and Applications
- Electron and X-Ray Spectroscopy Techniques
- Atomic and Molecular Physics
- Particle Accelerators and Free-Electron Lasers
- Statistical Methods and Bayesian Inference
- Astrophysics and Cosmic Phenomena
- Fusion materials and technologies
- Appendicitis Diagnosis and Management
- Dark Matter and Cosmic Phenomena
- Markov Chains and Monte Carlo Methods
- Forest Ecology and Biodiversity Studies
- Particle accelerators and beam dynamics
- Census and Population Estimation
- Atomic and Subatomic Physics Research
- Forest Management and Policy
Brookhaven National Laboratory
2015-2024
Argonne National Laboratory
2017-2024
Stony Brook University
2023-2024
Williams (United States)
2024
State University of New York
2023-2024
Ball State University
2024
William & Mary
2024
Valparaiso University
2023
Abilene Christian University
2020-2023
University of Tarapacá
2022
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 provide an assessment of the energy dependence key measurements within scope machine parameters for a US based electron-ion collider (EIC) outlined in EIC White Paper. first examine importance physics underlying these context outstanding questions nuclear science. then demonstrate, through detailed simulations measurements, that likelihood transformational scientific insights is greatly enhanced by making range and reach as large practically feasible.
We present a new technique to calculate the cross-section for diffractive vector meson production and DVCS in electron-ion collisions based on dipole model. The measurement of these processes can provide valuable information non-linear QCD phenomena, such as gluon saturation, is only known way gain insight into spatial distribution gluons nuclei. predictions differential $d\sigma/dQ^2$ $d\sigma/dt$ $J/\psi$ $\phi$ heavy nuclei demonstrate feasibility extracting source nuclei, F(b), from...
In 1935, in a paper entitled "Can quantum-mechanical description of reality be considered complete?", Einstein, Podolsky, and Rosen (EPR) formulated an apparent paradox quantum theory. They two systems that were initially allowed to interact, then later separated. A measurement physical observable performed on one system had have immediate effect the conjugate other - even if causally disconnected! The authors viewed this as clear indication inconsistency mechanics. parton model nucleon by...
The directed and elliptic flow of protons charged pions has been observed from the semicentral collisions a 158 GeV/nucleon Pb beam with target. rapidity transverse momentum dependence measured. is opposite to that but both exhibit negative at low pt. fairly independent rises pt.Received 10 November 1997DOI:https://doi.org/10.1103/PhysRevLett.80.4136©1998 American Physical Society
The production of a hard dijet with small transverse momentum imbalance in semi-inclusive DIS probes the conventional and linearly polarized Weizsaecker-Williams (WW) Transverse Momentum Dependent (TMD) gluon distributions. latter, particular, gives rise to an azimuthal dependence cross-section. In this paper we analyze feasibility measurement these TMDs through on nucleus at Electron-Ion Collider. We introduce MCDijet Monte-Carlo generator sample quark-antiquark configurations based...
We investigate saturation effects in ep scattering as well ultraperipheral pA and AA collisions at small x with four variants of the impact parameter dependent color dipole model: without gluon a novel mechanism that suppresses unphysical radii above confinement scale, problem not addressed by most implementations. show HERA can be very described any variants. When going from to eA scattering, are expected increase ∼A1/3. In lieu an electron-ion collider, we confront different versions model...
The Electron-Ion Collider (EIC) is an upcoming accelerator facility aimed at exploring the properties of quarks and gluons in nucleons nuclei, shedding light on their structure dynamics. inaugural experimental apparatus, ePIC (electron-Proton Ion Collider), designed as a general purpose detector to address NAS/NSAC physics program EIC. wider EIC community strongly supporting second interaction region associated enhance full science program. In this study, we evaluate how can be complementary...
Understanding the role of Quantum Chromodynamics in generating nuclear forces is important for uncovering mechanism short-ranged interactions and their manifestation short range correlations (SRC). The future Electron-Ion-Collider (EIC) at Brookhaven National Laboratory US will provide an unprecedented opportunity to systematically investigate underlying physics SRC energies kinematic regions that are otherwise impossible reach. We study SRCs electron-deuteron scattering events using Monte...
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,...
Why another conference devoted to ultra-relativistic heavy-ion physics? As we looked around the landscape of existing international conferences and workshops, realized that there was not a single one tailored people who are most directly involved with actual research work: students, post-docs, junior faculty/research scientists. Of course schools, but what had in mind. We wanted meeting where young researchers could come together discuss depth physics they working on without any hindrance....
Charged and neutral strange particle production was studied by the NA49 experiment at CERN. Preliminary inclusive spectra are presented for , particles, measured in a region close to mid-rapidity, central Pb+Pb collisions 158 GeV per nucleon. An enhanced relative properly scaled elementary nucleon-nucleon is observed, but its strength similar lighter S + nucleus systems. The enhancement stronger multistrange particles.