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https://hdl.handle.net/20.500.11851/11926
Title: | Search for a Resonance Decaying Into a Scalar Particle and a Higgs Boson in the Final State With Two Bottom Quarks and Two Photons in Proton–proton Collisions at S = 13 Tev With the Atlas Detector | Authors: | Aad, G. Aakvaag, E. Abbott, B. Abeling, K. Abicht, N.J. Abidi, S.H. Aboelela, M. |
Keywords: | Beyond Standard Model Hadron-Hadron Scattering Hadron-Hadron scattering Higgs Physics |
Publisher: | Springer Science and Business Media Deutschland GmbH | Abstract: | A search for the resonant production of a heavy scalar X decaying into a Higgs boson and a new lighter scalar S, through the process X → S(→bb¯)H(→γγ), where the two photons are consistent with the Higgs boson decay, is performed. The search is conducted using an integrated luminosity of 140 fb−1 of proton-proton collision data at a centre-of-mass energy of 13 TeV recorded with the ATLAS detector at the Large Hadron Collider. The search is performed over the mass range 170 ≤ mX ≤ 1000 GeV and 15 ≤ mS ≤ 500 GeV. Parameterised neural networks are used to enhance the signal purity and to achieve continuous sensitivity in a domain of the (mX, mS) plane. No significant excess above the expected background is found and 95% CL upper limits are set on the cross section times branching ratio, ranging from 39 fb to 0.09 fb. The largest deviation from the background-only expectation occurs for (mX, mS) = (575, 200) GeV with a local (global) significance of 3.5 (2.0) standard deviations. © The Author(s) 2024. | URI: | https://doi.org/10.1007/JHEP11(2024)047 https://hdl.handle.net/20.500.11851/11926 |
ISSN: | 1029-8479 |
Appears in Collections: | Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection |
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