Record #469109

COLORFREE

High-Precision Global Analysis of Color-Free LHC Processes at Small Recoil

Grant period	2021-10-01 - 2026-09-30
Funding body	European Union
Call number	ERC-2020-COG
Grant number	101002090
Identifier	G:(EU-Grant)101002090

Note: The Large Hadron Collider (LHC) at CERN collides protons at the highest energies. With the large datasets from Run 2 and the further increase expected from Run 3, the precision of LHC measurements will significantly improve over the next years. Color-free processes (for which the final state of the hard interaction is color neutral) are of central importance to several high-priority areas of the LHC precision physics program. Prominent examples are measurements of the W-boson mass, of the couplings of the Higgs boson, and searches for the elusive dark matter particles. The key innovation of COLORFREE will be to combine many different color-free processes in a new type of global analysis in which the dominant theory uncertainties are either eliminated or constrained by the data itself, thereby improving the theoretical precision up to an order of magnitude to the 1-2% level. In doing so, COLORFREE will unlock the full potential of existing and future precision measurements of color-free processes. This will be achieved 1) by exploiting and further developing a groundbreaking new method to reliably quantify perturbative theory uncertainties and their correlations, which was recently developed by the PI, and 2) by developing innovative new effective-field theory methods to account for all effects that are relevant at this precision but have been neglected so far. Important outcomes of COLORFREE will be: 1) Determinations of fundamental parameters at the highest possible precision, and stringent tests for possible effects beyond the Standard Model. 2) A new type of precision theory predictions with built-in uncertainties and correlations, which will solve a long-standing problem at the interface of theory and experiment. In particular, precision measurements often avoid theory limitations by relying on theory uncertainties to cancel between different control and signal regions, but until now have had no means to reliably quantify the remaining theory uncertainties.

Recent Publications

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Conference Presentation Marinelli, G. (Corresponding author)DESY*
Theory uncertainties for strong coupling determinations from $p_T(V)$
2026Large Hadron Collider Physics , (LHCP 2026), CICSUParis, CICSU, France, 18 May 2026 - 22 May 20262026-05-182026-05-22 Files BibTeX | EndNote: XML, Text | RIS

Talk (non-conference) Marinelli, G. (Corresponding author)DESY*
Theory uncertainties and correlations with Theory Nuisance Parameters (TNPs)
2026Theory uncertainties and missing higher orders at LHC, Sapienza University of RomeRome, Sapienza University of Rome, Italy, 20 Apr 20262026-04-20 Files BibTeX | EndNote: XML, Text | RIS

Talk (non-conference) Marinelli, G. (Corresponding author)DESY*
Theory uncertainties and correlations with Theory Nuisance Parameters (TNPs)
2026FH Particle Physics Discussion, DESYHamburg, DESY, Germany, 17 Apr 20262026-04-17 Files BibTeX | EndNote: XML, Text | RIS

Conference Presentation Marinelli, G. (Corresponding author)DESY*
Impact of theory uncertainties in the extraction of precise EW parameters at the LHC
2026Standard Model at LHC 2026, SM@LHC 2026, TurinTurin, Italy, 7 Apr 2026 - 10 Apr 20262026-04-072026-04-10 Files BibTeX | EndNote: XML, Text | RIS

Journal Article Diehl, M. (Corresponding author)DESY* ; Ploessl, P. J.DESY*
A quantitative study of two-loop splitting in double parton distributions
Journal of high energy physics 05(5), 158 (2026) [10.1007/JHEP05(2026)158]2026 OpenAccess Files Fulltext Fulltext by arXiv.org BibTeX | EndNote: XML, Text | RIS

Preprint Diehl, M. (Corresponding author)DESY* ; Ploessl, P.DESY*
A quantitative study of two-loop splitting in double parton distributions
[10.3204/PUBDB-2026-00800] OpenAccess Files Fulltext by arXiv.org BibTeX | EndNote: XML, Text | RIS

Talk (non-conference) Marinelli, G. (Corresponding author)DESY*
Overview on the theory model and uncertainties
2025W-mass Workshop, DESYDESY, 20 Nov 20252025-11-20 BibTeX | EndNote: XML, Text | RIS

Talk (non-conference) Marinelli, G. (Corresponding author)DESY*
Towards a precise determination of $\alpha_s$ the $Z$ boson spectrum
2025Bohr Seminar, University of ManchesterManchester, University of Manchester, UK, 13 Mar 20262026-03-13 Files BibTeX | EndNote: XML, Text | RIS

Talk (non-conference) Marinelli, G. (Corresponding author)DESY*
Latest news in Geneva: V + jet and Higgs pair production with top-mass eﬀects
2025Collider Phenomenology Seminar, MPI, MunichMunich, MPI, Munich, Germany, 21 Oct 20252025-10-21 Files BibTeX | EndNote: XML, Text | RIS

Talk (non-conference) (Invited) Marinelli, G. (Corresponding author)DESY*
From scales to shapes: theory uncertainties with theory nuisance parameters in the Drell-Yan $q_T$ spectrum
2025Theory Seminar, NikhefAmsterdam, Nikhef, Netherlands, 17 Apr 20252025-04-17 Files BibTeX | EndNote: XML, Text | RIS

All known publications ...
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Record created 2021-10-11, last modified 2024-07-17

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