A5070362764- Quantum Chromodynamics and Particle Interactions
- High-Energy Particle Collisions Research
- Particle physics theoretical and experimental studies
- Black Holes and Theoretical Physics
- Cold Atom Physics and Bose-Einstein Condensates
- Theoretical and Computational Physics
- Cosmology and Gravitation Theories
- Quantum, superfluid, helium dynamics
- Advanced Thermodynamics and Statistical Mechanics
- Particle Accelerators and Free-Electron Lasers
- Quantum Mechanics and Applications
- Atomic and Subatomic Physics Research
- Superconducting Materials and Applications
- Nuclear physics research studies
- Computational Physics and Python Applications
- Statistical Mechanics and Entropy
- Neutrino Physics Research
- Advanced NMR Techniques and Applications
- Quantum many-body systems
- Dark Matter and Cosmic Phenomena
- Pulsars and Gravitational Waves Research
- Particle accelerators and beam dynamics
- Bioinformatics and Genomic Networks
- Bacterial Genetics and Biotechnology
- Microbial Metabolic Engineering and Bioproduction
Uppsala University
2015-2024
Istituto Nazionale di Fisica Nucleare, Sezione di Roma Tre
2020
Istituto Nazionale di Fisica Nucleare
2020
University of Regensburg
1994-2020
University of Bonn
2020
University of Washington
2020
Charles University
2018
Technische Universität Braunschweig
2007-2012
University of Giessen
2001-2010
Goethe University Frankfurt
2009
The pion-pole contribution to hadronic light-by-light scattering in the anomalous magnetic moment of muon $(g-2)_\mu$ is fully determined by doubly-virtual pion transition form factor. Although this crucial input quantity is, principle, directly accessible experiment, a complete measurement covering all kinematic regions relevant for not realistic foreseeable future. Here, we report detail on reconstruction from available data, both space- and time-like, using dispersive representation that...
The $\pi^0$ pole constitutes the lowest-lying singularity of hadronic light-by-light (HLbL) tensor, and thus provides leading contribution in a dispersive approach to HLbL scattering anomalous magnetic moment muon $(g-2)_\mu$. It is unambiguously defined terms doubly-virtual pion transition form factor, which principle can be accessed its entirety by experiment. We demonstrate that, absence direct measurement, full space-like factor reconstructed very accurately based on existing data for...
We present a consistent theoretical approach for the study of nonequilibrium effects in chiral fluid dynamics within framework linear $\ensuremath{\sigma}$ model with constituent quarks. Treating quarks as an equilibrated heat bath, we use influence functional formalism to obtain Langevin equation field. This allows us calculate explicit form damping coefficient and noise correlators. For self-consistent derivation both field quark fluid, have employ 2PI (two-particle irreducible) effective...
This report summarizes the presentations and discussions during Rapid Reaction Task Force "Dynamics of critical fluctuations: Theory – phenomenology heavy-ion collisions", which was organized by ExtreMe Matter Institute EMMI held at GSI, Darmstadt, Germany in April 2019. We address current understanding dynamics fluctuations QCD their measurement collision experiments. In addition, we outline what might be learned from studying correlations other physical systems, such as cold atomic gases.
We review the current status of theories and experiments aiming at an understanding a determination properties light vector scalar mesons inside strongly interacting hadronic matter. Starting from discussion relevant symmetries QCD their connection with description through sum rules we then discuss models used to calculate in-medium self-energies hadrons spectral functions. The difficulties link these calculated actual observables are emphasized. Finally, in detail all running searching for...
We analyze the pion transition form factor using dispersion theory. calculate singly-virtual in time-like region based on data for $$e^+e^-\rightarrow 3\pi $$ cross section, generalizing previous studies $$\omega ,\phi \rightarrow decays and $$\gamma \pi scattering, verify our result by comparing to ^0\gamma data. perform analytic continuation space-like region, predicting poorly-constrained below $$1\,\text {GeV}$$ , extract slope of at vanishing momentum transfer $$a_\pi =(30.7\pm...
Using the helicity formalism of Jacob and Wick, we derive spin density matrices baryon antibaryon pairs produced in ${e}^{+}{e}^{\ensuremath{-}}$ annihilation. We consider production with spins $1/2+\overline{1/2}$, $1/2+\overline{3/2}$ ($+\mathrm{c}.\mathrm{c}.$) $3/2+\overline{3/2}$. provide modular expressions to include chains weak hadronic two-body decays hyperons. The are suitable for analysis high statistics data from $J/\ensuremath{\psi}$ $\ensuremath{\psi}(2S)$ at colliders, by fits...
We study the possible existence of deconfined quark matter in interior neutron stars using Nambu--Jona-Lasinio model to describe phase. find that typical with masses around 1.4 solar do not possess any their center. This can be traced back property NJL which suggests a large constituent strange mass over wide range densities.
Using dispersion theory the low-energy electromagnetic form factors for transition of a Sigma to Lambda hyperon are related pion vector factor. The additionally required input, i.e. two-pion-Sigma-Lambda amplitudes determined from relativistic next-to-leading-order (NLO) baryon chiral perturbation including baryons octet and optionally decuplet. Pion rescattering is again taken into account by theory. It turns out that inclusion decuplet not an option but necessity obtain reasonable results....
Nonleptonic two-body weak decays of baryons are an important tool to probe the combined charge conjugation--parity symmetry ($CP$) violation. We explain why strange provide complementary information kaons. A model-independent parametrization nonleptonic $\mathrm{\ensuremath{\Lambda}}$ and $\mathrm{\ensuremath{\Xi}}$ is reviewed, amplitudes updated according latest experimental input. demonstrate potential performing precision tests in baryon at next-generation electron-positron...
We investigate the nonequilibrium evolution of sigma field coupled to a fluid dynamic expansion hot fireball model chiral phase transition in heavy-ion collisions. The dissipative processes and fluctuations are allowed under assumption that total energy system is conserved. use linear with constituent quarks effects on equilibration excitation modes. quark acts as heat bath local thermal equilibrium evolves according semiclassical stochastic Langevin equation motion. supercooling reheating...
Abstract Motivation: Time-lapse imaging in combination with fluorescence microscopy techniques enable the investigation of gene regulatory circuits and uncovered phenomena like culture heterogeneity. In this context, computational image processing for analysis single cell behaviour plays an increasing role systems biology mathematical modelling approaches. Consequently, we developed a software package graphical user interface bacterial behaviour. Results: A new called TLM-Tracker allows...
Recently it has been shown that the observed antiproton yield in heavy-ion collisions at CERN-SpS energies can be understood by multi-pionic interactions which enforce local chemical equilibrium of antiprotons with nucleons and pions. Here we show antihyperons are driven towards pions, kaons on a timescale less than 3 fm/c when applying similar argument for considering inverse channel annihilation reactions anti-Y + p to pions kaons. These multi-mesonic easily explain antihyperon yields as...
To provide an integrated bioinformatics platform for a systems biology approach to the of pseudomonads in infection and biotechnology database SYSTOMONAS (SYSTems pseudOMONAS) was established. Besides our own experimental metabolome, proteome transcriptome data, various additional predictions cellular processes, such as gene-regulatory networks were stored. Reconstruction metabolic achieved via comparative genomics. Broad data integration is realized using SOAP interfaces well established...