| Makale Türü | Özgün Makale (Uluslararası alan indekslerindeki dergilerde yayınlanan tam makale) | ||
| Dergi Adı | |||
| Makale Dili | – | Basım Tarihi | 12-2025 |
| Makale Linki | https://hal.science/hal-05393747/ | ||
| UAK Araştırma Alanları |
Nükleer Fizik
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| Özet |
| A search for heavy resonances decaying into a Higgs boson (H) or a Z boson and a photon (), with the H or Z bosons decaying to a bottom quark-antiquark pair () is presented. The analysis is performed using proton-proton collision data at = 13 TeV collected by the CMS experiment at the CERN Large Hadron Collider, corresponding to an integrated luminosity of 138 fb. The analyzed events contain a photon and a massive large-radius jet originating from a Lorentz-boosted system. An advanced transformer-based algorithm classifies jets according to their substructure and quark flavors, forming a tagger that identifies jets as candidates from H/Z decays. A set of parametric functions is used to fit the photon-jet invariant mass spectrum and to extract potential signals. No significant excess is observed above the standard model expectations. The results set upper limits at 95% confidence level on the product of the cross section and the branching fraction for spin-1 H resonances and spin-0 Z resonances, below 0.1 and 0.3 fb, respectively, representing the most stringent limits to date. |
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