Adirect search for new heavy neutral Higgs bosons A and H in the t tZchannel is presented, targeting the process pp →A→ZHwith H →tt. For the first time, the channel with decays of the Z boson to muons or electrons in association with all-hadronic decays of the t t system is targeted. The analysis uses proton-proton collision data collected at the CERN LHC with the CMS experiment at √𝑠=13 Te V, which correspond to an integrated luminosity of 138fb−1. No signal is observed. Upper limits on the product of the cross section and branching fractions are derived for narrow resonances A and H with masses up to 2100 and 2000Ge V, respectively, assuming A boson production through gluon fusion. The results are also interpreted within two-Higgs-doublet models, where A and H are CP-odd and CP-even states, respectively, complementing and substantially extending the reach of previous searches.

Hayrapetyan, A., Tumasyan, A., Adam, W., Andrejkovic, J.W., Benato, L., Bergauer, T., et al. (2025). Search for heavy neutral Higgs bosons A and H in the t̄ tZ channel in proton-proton collisions at 13 TeV. PHYSICS LETTERS. SECTION B, 866, 1-29 [10.1016/j.physletb.2025.139568].

Search for heavy neutral Higgs bosons A and H in the t̄ tZ channel in proton-proton collisions at 13 TeV

Battilana, C.;Bonacorsi, D.;Cuffiani, M.;Diotalevi, T.;Fanfani, A.;Giommi, L.;Guiducci, L.;Lorusso, M.;Paggi, G.;Rossi Tisbeni, S.;Rovelli, T.;Siroli, G. P.;
2025

Abstract

Adirect search for new heavy neutral Higgs bosons A and H in the t tZchannel is presented, targeting the process pp →A→ZHwith H →tt. For the first time, the channel with decays of the Z boson to muons or electrons in association with all-hadronic decays of the t t system is targeted. The analysis uses proton-proton collision data collected at the CERN LHC with the CMS experiment at √𝑠=13 Te V, which correspond to an integrated luminosity of 138fb−1. No signal is observed. Upper limits on the product of the cross section and branching fractions are derived for narrow resonances A and H with masses up to 2100 and 2000Ge V, respectively, assuming A boson production through gluon fusion. The results are also interpreted within two-Higgs-doublet models, where A and H are CP-odd and CP-even states, respectively, complementing and substantially extending the reach of previous searches.
2025
Hayrapetyan, A., Tumasyan, A., Adam, W., Andrejkovic, J.W., Benato, L., Bergauer, T., et al. (2025). Search for heavy neutral Higgs bosons A and H in the t̄ tZ channel in proton-proton collisions at 13 TeV. PHYSICS LETTERS. SECTION B, 866, 1-29 [10.1016/j.physletb.2025.139568].
Hayrapetyan, A.; Tumasyan, A.; Adam, W.; Andrejkovic, J. W.; Benato, L.; Bergauer, T.; Chatterjee, S.; Damanakis, K.; Dragicevic, M.; Hussain, P. S.; ...espandi
File in questo prodotto:
File Dimensione Formato  
CMS41-1-s2.0-S0370269325003296-main.pdf

accesso aperto

Tipo: Versione (PDF) editoriale / Version Of Record
Licenza: Licenza per Accesso Aperto. Creative Commons Attribuzione (CCBY)
Dimensione 4.08 MB
Formato Adobe PDF
4.08 MB Adobe PDF Visualizza/Apri

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/1043805
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 2
  • ???jsp.display-item.citation.isi??? 2
  • OpenAlex ND
social impact