| Article | |
| Title | Colorflow Studies in the ATLAS Boosted Higgs Boson Tagger |
| Author(s) | D'Andrea, M (INFN, Rome ; Rome U.) |
| Collaboration | ATLAS Collaboration |
| Publication | 2024 |
| Number of pages | 4 |
| In: | Nuovo Cimento C 47 (2024) 112 |
| In: | 19th Incontri di Fisica delle Alte Energie, Catania, Italy, 12 - 14 Apr 2023, pp.112 |
| DOI | 10.1393/ncc/i2024-24112-2 |
| Subject category | Detectors and Experimental Techniques ; Particle Physics - Experiment |
| Accelerator/Facility, Experiment | CERN LHC ; ATLAS |
| Abstract | Enhancing the discrimination power to identify Higgs boson decay events into a pair of bottom quarks in the boosted regime is of significant importance within the ATLAS experiment at the Large Hadron Collider (LHC). Effectively identifying this specific process enhances the collected sample of Higgs boson production events, hence reducing the statistical uncertainties in the determination of the properties of this particle. The production of the Higgs boson in the so-called boosted regime, i.e., with large transverse momentum with respect to the beam direction, results in the final-state quark pair being highly collimated, reconstructed as a single large-radius jet (LargeR-jet). Discriminating between these signal events and the background is a rather challenging task. To enhance the discriminative power between signal and background events, it is possible to employ variables that are sensitive to the SU(3) color representation of the decaying particle, which produces the LargeR-jet. This study has demonstrated how the new ATLAS boosted Higgs boson tagger (GN2X) appears to autonomously utilize color information from the jet, showcasing its robustness, thus offering valuable insights for future analyses within the collaboration focusing on such events. |
| Copyright/License | CC-BY-4.0 |
Corresponding record in: Inspire
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