Project description
Effective noise reduction method improves precision of lattice QCD
Lattice quantum chromodynamics (QCD) refers to an ab initio approach to calculating observables in the non-perturbative regime of strong interactions. Funded by the Marie Skłodowska-Curie Actions programme, the HiCoLat project aims to enhance the precision of phenomenologically important observables. Researchers plan to develop noise reduction techniques to reduce statistical uncertainties at high-resolution lattice QCD simulations. The focus will be on improving the calculation of the hadronic vacuum polarisation contribution to the muon’s anomalous magnetic moment. The latter is a crucial observable in the search for new physics beyond the standard model. HiCoLat will also reduce systematic uncertainties caused by the finite grid. The project’s proposed approach will be tested in computing B-physics observables that are essential for investigating observed anomalies in heavy quarks.
Objective
Lattice Quantum Chromodynamics (LQCD) is the only known ab-initio approach to compute observables in the non-perturbative regime of the strong interactions of particles and fields. The theory of strong interactions is solved numerically in finite volumes on an Euclidean space-time grid. The framework of LQCD has systematically improvable statistic and systematic uncertainties. It provides highly relevant theoretical input for high-energy and nuclear physics. The precision of LQCD computations has significantly improved in the last years thanks to algorithmic advancements.
This project aims to further improve the precision of phenomenologically important observables. The improvement will be achieved by the development and application of noise reduction techniques to reduce statistical uncertainties at computationally challenging, very fine resolutions of LQCD simulations.
The focus of this project will be on the improved determination of the hadronic vacuum polarization contribution to the anomalous magnetic moment of the muon. Precise theoretical predictions of this observable are of utmost importance in the search for physics beyond the Standard Model of particles as the uncertainties of the experimental results will significantly decrease in the upcoming years.
The computation of the hadronic vacuum polarization in the framework of LQCD suffers from an exponentially enhanced increase of the noise-to-signal ratio in the low energy region. Furthermore, the precision of state-of-the-art determinations is bounded by systematic uncertainties due to the presence of the finite grid. Both uncertainties will be addressed and reduced in this work.
Furthermore, the approach will be tested in the computation of B-physics observables that are needed to investigate currently observed anomalies in the heavy quark flavor sector of the Standard Model.
Fields of science (EuroSciVoc)
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
- natural sciences physical sciences theoretical physics particle physics leptons
- natural sciences physical sciences nuclear physics
- natural sciences physical sciences theoretical physics particle physics quarks
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Keywords
Project’s keywords as indicated by the project coordinator. Not to be confused with the EuroSciVoc taxonomy (Fields of science)
Project’s keywords as indicated by the project coordinator. Not to be confused with the EuroSciVoc taxonomy (Fields of science)
Programme(s)
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
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HORIZON.1.2 - Marie Skłodowska-Curie Actions (MSCA)
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Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
Funding Scheme
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Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
HORIZON-TMA-MSCA-PF-EF - HORIZON TMA MSCA Postdoctoral Fellowships - European Fellowships
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Call for proposal
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(opens in new window) HORIZON-MSCA-2022-PF-01
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1211 GENEVE 23
Switzerland
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