A search for the resonant production of a heavy scalar X decaying into a lighter scalar S and a Higgs boson, 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 integrated luminosities of 140 and 59 fb−1 of proton–proton collision data at centre-of-mass energies of 13 and 13.6 TeV, respectively, recorded with the ATLAS detector at the LHC. The search is performed over the mass ranges of 170 ≤ mX ≤ 1000 GeV and 15 ≤ mS ≤ 500 GeV. No significant excess over the Standard Model background predictions is observed and limits at 95% confidence level are set on the product of cross section and branching fraction for the process X→S(→bb¯)H(→γγ) at 13 TeV, ranging from 9 fb to 0.06 fb.
Search for a resonance decaying into a scalar particle and a Higgs boson in the final state with two bottom quarks and two photons with 199 fb−1 of data collected at s=13 and 13.6 TeV with the ATLAS detector
Cobal M.;Giordani M. P.;Giugliarelli G.;Monzani S.;Panizzo G.;
2026-01-01
Abstract
A search for the resonant production of a heavy scalar X decaying into a lighter scalar S and a Higgs boson, 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 integrated luminosities of 140 and 59 fb−1 of proton–proton collision data at centre-of-mass energies of 13 and 13.6 TeV, respectively, recorded with the ATLAS detector at the LHC. The search is performed over the mass ranges of 170 ≤ mX ≤ 1000 GeV and 15 ≤ mS ≤ 500 GeV. No significant excess over the Standard Model background predictions is observed and limits at 95% confidence level are set on the product of cross section and branching fraction for the process X→S(→bb¯)H(→γγ) at 13 TeV, ranging from 9 fb to 0.06 fb.| File | Dimensione | Formato | |
|---|---|---|---|
|
1-s2.0-S0370269326002534-main.pdf
accesso aperto
Tipologia:
Versione Editoriale (PDF)
Licenza:
Creative commons
Dimensione
8.9 MB
Formato
Adobe PDF
|
8.9 MB | Adobe PDF | Visualizza/Apri |
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.


