This paper reports a search for a light CP-odd scalar resonance with a mass of 20 GeV to 90 GeV in 13 TeV proton-proton collision data with an integrated luminosity of 140 fb(-1) collected with the ATLAS detector at the Large Hadron Collider. The analysis assumes the resonance is produced via gluon-gluon fusion and decays into a tau(+)tau(-) pair which subsequently decays into a fully leptonic mu(+)nu(mu)(v) over bar (tau)e(-)(v) over bar (e)nu(tau) or e(+)nu(e)(v) over bar (tau)mu(-)(v) over bar (mu)nu(tau) final state. No significant excess of events above the predicted Standard Model background is observed. The results are interpreted within a flavour-aligned two-Higgs-doublet model, and a model-independent cross-section interpretation is also given. Upper limits at 95% confidence level between 3.0 pb and 68 pb are set on the cross-section for producing a CP-odd Higgs boson that decays into a tau(+)tau(-) pair.
Null, N., Aad, G., Aakvaag, E., Abbott, B., Abdelhameed, S., Abeling, K., et al. (2024). Search for a light CP-odd Higgs boson decaying into a pair of τ-leptons in proton-proton collisions at sqrt{s} = 13 TeV with the ATLAS detector. JOURNAL OF HIGH ENERGY PHYSICS, 2024(12) [10.1007/jhep12(2024)126].
Search for a light CP-odd Higgs boson decaying into a pair of τ-leptons in proton-proton collisions at sqrt{s} = 13 TeV with the ATLAS detector
Di Micco, B.Membro del Collaboration Group
;Di Nardo, R.Membro del Collaboration Group
;Montereali, F.Membro del Collaboration Group
;Orestano, D.Membro del Collaboration Group
;
2024-01-01
Abstract
This paper reports a search for a light CP-odd scalar resonance with a mass of 20 GeV to 90 GeV in 13 TeV proton-proton collision data with an integrated luminosity of 140 fb(-1) collected with the ATLAS detector at the Large Hadron Collider. The analysis assumes the resonance is produced via gluon-gluon fusion and decays into a tau(+)tau(-) pair which subsequently decays into a fully leptonic mu(+)nu(mu)(v) over bar (tau)e(-)(v) over bar (e)nu(tau) or e(+)nu(e)(v) over bar (tau)mu(-)(v) over bar (mu)nu(tau) final state. No significant excess of events above the predicted Standard Model background is observed. The results are interpreted within a flavour-aligned two-Higgs-doublet model, and a model-independent cross-section interpretation is also given. Upper limits at 95% confidence level between 3.0 pb and 68 pb are set on the cross-section for producing a CP-odd Higgs boson that decays into a tau(+)tau(-) pair.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.


