Project description
New mathematical framework for next-generation particle physics calculations
To discover new physics, scientists must match the extreme precision of modern particle colliders with equally precise theoretical calculations. High-energy collisions are dominated by the strong nuclear force, described by quantum chromodynamics (QCD). Supported by the Marie Skłodowska-Curie Actions programme, the TORCHES project aims to advance theoretical calculations in QCD. Researchers will calculate a highly complex, previously unknown ‘third-order’ correction for how particles scatter and shape themselves during collisions. Special schemes will be employed to deal with infrared singularities up to third order in perturbation theory and also ensure the stability of multi-loop matrix elements. The proposed framework will help re-analyse older collider data and will provide the computational backbone needed for next-generation electron-positron machines.
Objective
As experimental measurements at particle colliders become increasingly more accurate, ever more precise theoretical predictions must be derived from the Standard Model to further probe the fundamental constituents of nature and search for new phenomena. In high-energy collisions, Quantum Chromodynamics (QCD) effects dominate and must be quantified as accurately as possible. This is achieved with a perturbative approach by progressively computing higher-order QCD radiative corrections to scattering processes. Electron-positron colliders provide an ideal environment for QCD studies due to the well-controlled leptonic initial state, which allows for extremely precise measurements and calculations. Hadronic event shapes in electron-positron annihilation are classic observables relevant for a wide range of phenomenological applications, including the determination of the strong coupling constant.
The TORCHES project advances the frontiers of theoretical calculations in QCD by computing the unknown third-order perturbative correction to hadronic event shapes in electron-positron annihilation. A dedicated infrared subtraction scheme will be designed to deal with the emergence of infrared singularities up to third-order in perturbation theory. Furthermore, techniques to ensure the numerical stability of multi-loop matrix elements will be employed to achieve an efficient and reliable implementation.
The obtained results will enable more accurate comparisons with existent data from the Large Electron-Positron collider and demonstrate the feasibility of theoretical calculations certainly required to match the physics goals of the next generation of electron-positron machines, such as the Future Circular Collider, where experimental precision will reach unprecedented levels. The developed computational framework will constitute the backbone for future extensions to other observables and processes, including hadron-collider ones, paving the way to third-order QCD phenomenology.
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.
This project's classification has been human-validated.
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.
This project's classification has been human-validated.
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)
MAIN PROGRAMME
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Topic(s)
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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
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.
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
Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
(opens in new window) HORIZON-MSCA-2025-PF
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Net EU financial contribution. The sum of money that the participant receives, deducted by the EU contribution to its linked third party. It considers the distribution of the EU financial contribution between direct beneficiaries of the project and other types of participants, like third-party participants.
1211 GENEVE 23
Switzerland
The total costs incurred by this organisation to participate in the project, including direct and indirect costs. This amount is a subset of the overall project budget.