A5041028503- Particle physics theoretical and experimental studies
- Quantum Chromodynamics and Particle Interactions
- High-Energy Particle Collisions Research
- Superconducting Materials and Applications
- Cosmology and Gravitation Theories
- Dark Matter and Cosmic Phenomena
- Computational Physics and Python Applications
- Particle Detector Development and Performance
- Black Holes and Theoretical Physics
- Particle Accelerators and Free-Electron Lasers
- Physics of Superconductivity and Magnetism
- Theoretical and Computational Physics
- Neutrino Physics Research
- Cold Atom Physics and Bose-Einstein Condensates
- Atomic and Subatomic Physics Research
- High-pressure geophysics and materials
- Quantum Mechanics and Non-Hermitian Physics
- Medical Imaging Techniques and Applications
- Muon and positron interactions and applications
- Quantum chaos and dynamical systems
- International Science and Diplomacy
- Pulsars and Gravitational Waves Research
- Seismic Imaging and Inversion Techniques
- Advanced NMR Techniques and Applications
- Quantum, superfluid, helium dynamics
University of Groningen
2016-2025
Laboratoire de Physique des 2 Infinis Irène Joliot-Curie
2024
Université Paris-Saclay
2024
Centre National de la Recherche Scientifique
2024
Thomas Jefferson National Accelerator Facility
2011-2022
University of Basel
2021
Laboratoire de Physique Théorique et Hautes Energies
2010-2019
Vrije Universiteit Amsterdam
2002-2017
National Institute for Subatomic Physics
1996-2017
Shandong University
2016-2017
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 consider the various asymmetries, notably single spin that appear in leptoproduction as a consequence of presence time-reversal odd distribution functions. This could facilitate experimental searches for phenomena.
This writeup is a compilation of the predictions for forthcoming Heavy Ion Program at Large Hadron Collider, as presented CERN Theory Institute 'Heavy Collisions LHC - Last Call Predictions', held from May 14th to June 10th 2007.
This report is based on a ten-week program Gluons and the quark sea at high-energies, which took place Institute for Nuclear Theory (INT) in Seattle Fall 2010. The principal aim of was to develop sharpen science case an Electron-Ion Collider (EIC), facility that will be able collide electrons positrons with polarized protons light heavy nuclei high energies, offering unprecedented possibilities in-depth studies quantum chromodynamics (QCD). organized around following four major themes: (i)...
We provide a concise overview on transverse momentum dependent (TMD) parton distribution functions, their application to topical issues in high-energy physics phenomenology, and theoretical connections with QCD resummation, evolution factorization theorems. illustrate the use of TMDs via examples multi-scale problems hadronic collisions. These include q_T spectra Higgs vector bosons for low q_T, azimuthal correlations production multiple jets associated heavy at large jet masses. discuss...
In this paper we consider the parametrizations of gluon transverse momentum dependent (TMD) correlators in terms TMD parton distribution functions (PDFs). These functions, referred to as TMDs, are defined Fourier transforms hadronic matrix elements nonlocal combinations fields. The nonlocality is bridged by gauge links, which have characteristic paths (future or past pointing), giving rise a process dependence that breaks universality. For gluons, specific correlator with one future and...
We discuss possible origins of transverse spin asymmetries in hadron-hadron collisions and propose an explanation terms a chiral-odd T-odd distribution function with intrinsic momentum dependence, which would signal correlation between the quarks inside unpolarized hadron. will argue that despite its conceptual problems, it can account for single asymmetries, example p + p(transversely polarized) -> pion X, at same time large cos(2 phi) asymmetry Drell-Yan cross section, still lacks...
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 show that linearly polarized gluons inside unpolarized hadrons can be directly probed in jet or heavy quark pair production electron-hadron collisions. discuss the simplest cos (2 phi) asymmetries and estimate their maximal value, concluding measurements of unknown gluon distribution proton should feasible future EIC LHeC experiments. Analogous hadron-hadron collisions suffer from factorization breaking contributions would allow to quantify importance initial final state interactions.
Asymmetries in heavy quark pair and dijet production electron-proton collisions allow studies of gluon TMDs close analogy to semi-inclusive DIS. Here we present expressions for azimuthal asymmetries both unpolarized transversely polarized proton cases consider the maximal allowed. The latter are found be rather sizeable, except certain kinematic limits which pointed out. In addition, small-x limit expectations from a McLerran-Venugopalan model linearly gluons perturbative, large transverse...
We show that initial-state interactions contribute to the $\mathrm{cos}2\ensuremath{\varphi}$ distribution in unpolarized Drell-Yan lepton pair production $\mathrm{pp}$ and $p\overline{p}\ensuremath{\rightarrow}{\mathcal{l}}^{+}{\mathcal{l}}^{\ensuremath{-}}X,$ without suppression. The asymmetry is expressed as a product of chiral-odd distributions...
We study how gluons carrying linear polarization inside an unpolarized hadron contribute to the transverse momentum distribution of Higgs bosons produced in hadronic collisions. They modify by a characteristic way that could be used determine whether boson is scalar or pseudoscalar particle.
Both in heavy-ion collisions and magnetars very strong magnetic fields are produced, which has an influence on the phases of matter involved. In this paper we investigate effect ($B\ensuremath{\sim}5{m}_{\ensuremath{\pi}}^{2}/e=1.7\ifmmode\times\else\texttimes\fi{}{10}^{19}\text{ }\text{ }\mathrm{G}$) chiral symmetry restoring phase transition using Nambu--Jona-Lasinio model. It is observed that pattern transitions depends relative magnitude field instanton interaction strength. We study two...
Recently it has been put forward that linearly polarized gluons inside unpolarized protons affect the transverse momentum distribution of final state particles in hadronic collisions. They lead to a characteristic modulation differential cross section Higgs production and azimuthal asymmetries in, for instance, heavy quark pair production. Here we study effect on charmonium bottomonium collisions, such as at LHCb proposed fixed target experiment AFTER LHC. We focus mainly scalar pseudoscalar...
We propose that back-to-back correlations in the azimuthal angle of jets produced collisions unpolarized with transversely polarized proton beams could be used to determine Sivers functions. The corresponding single-spin asymmetry is not power suppressed, but subject Sudakov suppression. present estimates (without and effects) for BNL RHIC at jet transverse momenta $\ensuremath{\sim}10\mathrm{GeV}$ show it may reach a few percent or more provide access gluon function.
We study azimuthal asymmetries in heavy quark pair production unpolarized electron-proton and proton-proton collisions, where the originate from linear polarization of gluons inside hadrons. provide cross section expressions maximal allowed by positivity, for both charm bottom production. The upper bounds on are shown to be very large depending transverse momentum quarks, which is promising especially their measurements at a possible future Electron-Ion Collider or Large Hadron electron...
We review what is currently known about the gluon Sivers distribution and are opportunities to learn more it. Because single transverse spin asymmetries in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" id="M1"><mml:msup><mml:mrow><mml:mi>p</mml:mi></mml:mrow><mml:mrow><mml:mo>↑</mml:mo></mml:mrow></mml:msup><mml:mi>p</mml:mi><mml:mo>→</mml:mo><mml:mi>π</mml:mi><mml:mi>X</mml:mi></mml:math>provide only indirect information function through relation with quark-gluon tri-gluon...
We study the leading-power gluon transverse-momentum-dependent distributions (TMDs) of relevance to asymmetries in scattering off transversely polarized hadrons. Next-to-leading-order perturbative calculations these TMDs show that at large transverse momentum they have common dynamical origins but limit a small longitudinal fraction $x$, only one origin remains. find this limit, dipole-type survive and become identical each other. At are all given by expectation value single Wilson loop...