Project description
Calculating soft functions for non-global observables
Non-global observables in Quantum Chromodynamics (QCD) specifically respond to radiation within defined regions of phase space, and their resummation calculations are typically constrained. A framework designed to compute soft functions across a broad spectrum of observables can facilitate the distinction of observable-dependent features from universal structures, thereby enhancing our comprehension of fundamental QCD factorisation properties. The MSCA-funded SoftSERVE-NGL project uses semi-numerical methods to compute next-to-next-to-leading-order (NNLO) soft functions for non-global observables in QCD. Through an analysis of the universal structure of soft and collinear divergences, the project aims to isolate singularities and release a publicly accessible software package for use by phenomenologists. The project's objective is to establish connections among various observable classes and illuminate the characteristics of QCD factorisation.
Objective
"To facilitate the resummation of non-global logarithms and thereby enhancing theoretical predictions for collider phenomenology, I propose a project to calculate NNLO (order alpha_s^2) soft functions for non-global observables in Soft-Collinear Effective Theory (SCET), using semi-numerical methods. The proposed framework consists of two steps: First, the universal structure of soft and collinear divergences in Quantum Chromodynamics (QCD) is analysed to isolate singularities in an observable-independent fashion, after which the remaining phase space integrations are performed numerically. The objectives of the project are the release of a public software package for use by phenomenologists, and the use of the universal divergence structure to relate different classes of observables and shed light on properties of QCD factorisation (with the equivalence of virtuality and rapidity anomalous dimensions as a concrete example).
The project is structured into six work packages: WP1: application to SCET-1 (""energy-type"") observables without clustering effects,
WP2: SCET-1 with clustering effects, WP3: SCET-2 (""transverse momentum-type"") observables, WP4: development of a software
package, and WP5: Exploitation, WP6: communication, dissemination, and training.
The project is inspired by previous efforts directed at the much simpler ""global"" observables. As non-global observables are less investigated yet ubiquitous in collider physics (e.g. jet observables), and resummation calculations for them are only regularly performed in the large Nc limit and at low logarithmic accuracy, a framework to calculate soft functions for wide swathes of observables can be of tremendous service to the community. The systematic separation of observable-dependent features from universal structures can also help shed light on fundamental properties of QCD factorisation, via e.g. an observable-independent analysis of Glauber modes and their impact on factorisation."
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 computer and information sciences software
- natural sciences physical sciences theoretical physics particle physics particle accelerator
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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)
MAIN PROGRAMME
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Topic(s)
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.
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-2022-PF-01
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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.
1010 WIEN
Austria
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.