Project description
Measuring the top quark mass with modern jet substructure methods
With the high-luminosity phase of the Large Hadron Collider on the horizon, it is imperative to accurately describe the effects of strong interactions for achieving high-precision measurements. Currently, the measurement of the top quark mass is impacted by theoretical uncertainty associated with collider simulations that lack a systematically improvable treatment of the physics of hadronisation. Such limitations also burden the majority of jet substructure measurements, including the related strong coupling determinations. To address these problems, the ERC-funded TOPMASS project aims to leverage recent breakthroughs in energy-energy correlators as a top mass-sensitive probe and novel effective field theory methods for developing a model-independent framework to describe hadronisation effects. These developments will eliminate overreliance on simulations and enable high-precision jet substructure measurements.
Objective
We are in the era of precision collider physics where a major challenge is to accurately describe the effects of the strong interactions. The precise determination of the top quark mass is one of the most important measurements in particle physics: it is crucial for indirect searches for new physics and the analysis of the stability of the universe. Currently, the measurement is plagued by theoretical imprecision, including an over-reliance on Monte Carlo simulations and the lack of a systematically improvable treatment of the physics of hadronization (the process by which quarks and gluons are bound into color-neutral hadrons). The same limitations also impact essentially all jet substructure measurements. This includes measurements of the strong coupling, which is another fundamental parameter of the Standard Model. With the high-luminosity phase of the Large Hadron Collider (LHC) on the horizon, addressing these problems becomes exceptionally timely and critical.
TOPMASS will overcome these problems by 1) capitalizing on the PI's recent groundbreaking work to exploit Energy-Energy Correlators as a top mass-sensitive probe leading to a new paradigm, and 2) exploiting modern effective field theory methods for developing a model-independent framework to describe hadronization, enabling precise jet substructure determination of the top mass and the strong coupling. This avoids the systematic uncertainty from the usage of hadronization models. It will have immediate applicability to a wide range of precision QCD measurements.
The key outcomes of TOPMASS will be
1) High-precision computations that enable a sub-GeV top mass measurement at the LHC in a field-theoretic scheme.
2) A systematic data-driven approach for describing hadronization effects in modern jet substructure observables.
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 particle accelerator
- natural sciences physical sciences theoretical physics particle physics gluons
- 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)
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Multi-annual funding programmes that define the EU’s priorities for research and innovation.
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HORIZON.1.1 - European Research Council (ERC)
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HORIZON-ERC - HORIZON ERC Grants
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Call for proposal
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(opens in new window) ERC-2024-STG
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22607 Hamburg
Germany
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