A5033706470- Particle physics theoretical and experimental studies
- Quantum Chromodynamics and Particle Interactions
- High-Energy Particle Collisions Research
- Superconducting Materials and Applications
- Quantum chaos and dynamical systems
- Theoretical and Computational Physics
- Particle Detector Development and Performance
- Distributed and Parallel Computing Systems
- Markov Chains and Monte Carlo Methods
- Statistical Mechanics and Entropy
- Advanced Data Storage Technologies
- Spectroscopy and Quantum Chemical Studies
- ICT Impact and Policies
- Atomic and Subatomic Physics Research
- Quantum Electrodynamics and Casimir Effect
- Relativity and Gravitational Theory
- Quantum Mechanics and Applications
- Gamma-ray bursts and supernovae
- Cosmology and Gravitation Theories
- Computational Physics and Python Applications
- Advanced NMR Techniques and Applications
- Geophysics and Gravity Measurements
- Advanced Algebra and Geometry
- Protein Structure and Dynamics
Eötvös Loránd University
2021-2023
Pázmány Péter Catholic University
2022
University of Bonn
2022
University of Debrecen
2016-2019
Max Planck Society
2019
Max Planck Institute for Physics
2018
We present the CoLoRFulNNLO method to compute higher order radiative corrections jet cross sections in perturbative QCD. apply our computation of event shape observables electron-positron collisions at NNLO accuracy and validate code by comparing predictions previous results literature. also calculate for first time cone energy fraction NNLO.
We present a comparison of the computation energy–energy correlation in $$e^{+}e^{-}$$ collisions back-to-back region at next-to-next-to-leading logarithmic accuracy matched with order perturbative prediction to LEP, PEP, PETRA, SLC and TRISTAN data. With these predictions we perform an extraction strong coupling constant taking into account non-perturbative effects modelled Monte Carlo event generators. The final result NNLO+NNLL precision is $$\alpha _{S}(M_{Z})= 0.11750\pm 0.00018...
We present the computation of energy-energy correlation in $e^+e^-$ collisions back-to-back region at next-to-next-to-leading logarithmic accuracy matched with order perturbative prediction. study effect fixed higher corrections a comparison our results to LEP and SLC data. The correction has sizable impact on extracted value $\alpha_{\mathrm S}(M_Z)$, hence its inclusion is mandatory for precise measurement strong coupling using correlation.
We study the 2+1 dimensional XY model at nonzero chemical potential $\mu$ on deformed integration manifolds, with aim of alleviating its sign problem. investigate several proposals for deformations, and considerably improve severity problem respect to standard reweighting approaches. present numerical evidence that reduction is exponential both in $\mu^2$ spatial volume. also a new approach optimization procedure based reweighting, sensibly reduces computational cost.
The Future Circular Collider (FCC) at CERN, a proposed 100-km circular facility with several colliders in succession, culminates 100 TeV proton-proton collider. It offers vast new domain of exploration particle physics, orders magnitude advances terms Precision, Sensitivity and Energy. implementation plan foresees, as first step, an Electroweak Factory electron-positron This high luminosity facility, operating between 90 365 GeV centre-of-mass energy, will study the heavy particles Standard...
We studied integration contour deformations in the chiral random matrix theory of Stephanov [Phys. Rev. Lett. 76, 4472 (1996)] with goal alleviating finite-density sign problem. considered simple ans\"atze for deformed contours and optimized their parameters. find that optimization a single parameter manages to considerably improve on severity show numerical evidence improvement achieved is exponential degrees freedom system, i.e., size matrix. also compare method coming from holomorphic...
A bstract We present state-of-the-art extractions of the strong coupling based on N 3 LO+NNLL accurate predictions for two-jet rate in Durham clustering algorithm at e + − collisions, as well a simultaneous fit two- and three-jet rates taking into account correlations between two observables. The fits are performed large range data sets collected LEP PETRA colliders, with energies spanning from 35 GeV to 207 GeV. Owing high accuracy used, perturbative uncertainty is considerably smaller than...
This document collects a written summary of all contributions presented at the workshop "$α_s$(2019): Precision measurements strong coupling" held ECT* (Trento) in Feb. 11--15, 2019. The explored depth latest developments on determination QCD coupling $α_s$ from key categories where high precision are available: (i) lattice QCD, (ii) hadronic $τ$ decays, (iii) deep-inelastic scattering and parton distribution functions, (iv) event shapes, jet cross sections, other final-states $e^+e^-$...
We studied the 2+1 dimensional XY model at nonzero chemical potential on deformed integration manifolds with aim of alleviating its sign problem. investigated several proposals for deformations and managed to considerably improve severity problem respect standard reweighting approaches. In this talk I present numerical evidence that a significant reduction can be achieved which is exponential in both squared spatial volume. Furthermore, discuss new approach optimizaiton procedure, based...
In my talk I gave a status update on the extension of CoLoRFulNNLO subtraction method for computing QCD jet cross sections with hadrons in initial state. The scheme has been fully worked out previously electron-positron collisions and recently important steps have made towards generalizing it to be able deliver corrections same order LHC processes as well. particular, bottleneck regularizing multiple real emissions addressed. We demonstrate numerical stability by doubly contribution...
The Abraham-Lorentz-Dirac theory predicts vanishing radiation reaction for uniformly accelerated charges. However, since an accelerating observer should detect thermal radiation, the charge be seen absorbing photons in frame which, if nothing else occurs, would influence its motion. This means that either there is inertial or additional phenomenon countering effect of absorption. In this paper I rederive Abraham--Lorentz--Dirac force from quantum electrodynamics, then study case a charge....
The strong coupling is one fundamental parameter of the standard model. Its most precise determination importance. To contribute to world average calculation has fit certain criteria. One these have Next-to-Next-to-Leading Order accuracy in fixed-order calculation. With CoLoRFulNNLO subtraction method developed for electron-positron annihilation and new predictions become available at NNLO observables such as energy-energy correlation, we use this extract using data measured by OPAL SLD...
We present a determination of the strong coupling constant α S ( $ m_{Z^0 } ) using global fit theory predictions in next-to-next-next-leading-order (NNLO) combined with resummed at next-to-next-leading-log level (NNLL) [ bibrR11 ]. The are compared to distributions energy-energy correlations measured e + − annihilation hadronic final states by experiments colliders LEP, PETRA, TRISTAN and PEP. corrected for hadronisation effects modern generator programs Sherpa 2.2.4 Herwig 7.1.1.
We present a comparison of the computation energy-energy correlations and Durham algorithm jet rates in $e+e−$ collisions at next-to-next-to-leading logarithmic accuracy matched with $O$ $(α3s)$ perturbative prediction to LEP, PEP, PETRA, SLC, TRISTAN data. With these predictions we perform extractions strong coupling constant taking into account non-perturbative effects modelled modern Monte Carlo event generators that simulate NLO QCD corrections.
We present a computation of energy-energy correlation in $e+e−$ annihilation at next-to-next-to-leading order accuracy perturbative QCD matched with the logarithmic resummed calculation for back-to-back limit. Using these predictions and state-of-the-art Monte Carlo tools to model hadronization corrections, we perform an extraction strong coupling from available data sets. also show results soft-drop thrust, observable specifically constructed have reduced corrections. study impact soft drop...
We studied integration contour deformations in the chiral random matrix theory of Stephanov with goal alleviating finite-density sign problem. considered simple ans\"atze for deformed contours, and optimized their parameters. find that optimization a single parameter manages to considerably improve on severity show numerical evidence improvement achieved is exponential degrees freedom system, i.e., size matrix. also compare method coming from holomorphic flow equations.
In this contribution we present a determination of the strong coupling from fit QCD predictions for energy-energy correlation measured in electron-positron collisions at various center-of-mass energies. Experimental data are compared to precise theoretical calculations incorporating NNLO combined with NNLL resummation back-to-back region. Hadronization corrections assessed using modern shower Monte Carlo programs matched NLO fixed-order computations. The final result obtained global is...
In my talk I gave a status update on the extension of CoLoRFulNNLO subtraction method for computing QCD jet cross sections with hadrons in initial state. The scheme has been fully worked out previously electron-positron collisions and recently important steps have made towards generalizing it to be able deliver corrections same order LHC processes as well. particular, bottleneck regularizing multiple real emissions addressed. We demonstrate numerical stability by doubly contribution...