D’Avanzo, A. (2024) Anomaly Detection search for new resonances decaying into a Higgs boson and a generic new particle X in hadronic final states using s√=13 TeV pp collisions with the ATLAS detector. Il nuovo cimento C, 47 (3). pp. 1-4. ISSN 1826-9885
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Abstract
A search is presented for heavy resonances decaying into a Higgs boson (H) and a new particle (X) in a fully hadronic final state with the ATLAS detector at the CERN Large Hadron Collider (LHC) (ATLAS Collaboration, JINST, 3 (2008) S08003). The full Run II of LHC is analyzed, corresponding to an integrated luminosity of 139 fb−1. A novel discovery signal region is imple- mented based on a jet-level anomaly score for signal model-independent tagging of the boosted X boson, representing the first application of fully unsupervised machine learning to an ATLAS analysis. No significant deviation from the SM is observed, so the results are interpreted in upper limits at 95% of confidence level (C.L.) on the production cross section σ(pp → Y → XH) (ATLAS Collaboration, Phys. Rev. D, 108 (2023) 052009).
| Item Type: | Article |
|---|---|
| Subjects: | 500 Scienze naturali e Matematica > 530 Fisica |
| Depositing User: | Marina Spanti |
| Date Deposited: | 10 Jul 2024 16:09 |
| Last Modified: | 10 Jul 2024 16:09 |
| URI: | http://eprints.bice.rm.cnr.it/id/eprint/23015 |
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