Search for heavy neutral Higgs bosons A and H in the tt¯Z channel in proton-proton collisions at 13 TeV
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, cilt.866, 2025 (SCI-Expanded)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 866
- Basım Tarihi: 2025
- Doi Numarası: 10.1016/j.physletb.2025.139568
- Dergi Adı: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aerospace Database, Chemical Abstracts Core, INSPEC, zbMATH, Directory of Open Access Journals
- Anahtar Kelimeler: 2HDM, CMS
- Çukurova Üniversitesi Adresli: Evet
Özet
A direct search for new heavy neutral Higgs bosons [Figure presented] and [Figure presented] in the [Figure presented] channel is presented, targeting the process [Figure presented] with [Figure presented]. For the first time, the channel with decays of the [Figure presented] boson to muons or electrons in association with all-hadronic decays of the [Figure presented] system is targeted. The analysis uses proton-proton collision data collected at the CERN LHC with the CMS experiment at s=13TeV, 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 [Figure presented] and [Figure presented] with masses up to 2100 and 2000 GeV, respectively, assuming [Figure presented] boson production through gluon fusion. The results are also interpreted within two-Higgs-doublet models, where [Figure presented] and [Figure presented] are CP-odd and CP-even states, respectively, complementing and substantially extending the reach of previous searches.