Search for the decay of the Higgs boson to a pair of light pseudoscalar bosons in the final state with four bottom quarks in proton-proton collisions at √s=13 TeV
Yazarlar (1)
Prof. Dr. Hasan OĞUL Sinop Üniversitesi, Türkiye
Makale Türü Açık Erişim Özgün Makale (SSCI, AHCI, SCI, SCI-Exp dergilerinde yayınlanan tam makale)
Dergi Adı Journal of High Energy Physics (Q1)
Dergi ISSN 1029-8479 Dergi Bilgileri (2024)
Makale Dili İngilizce Basım Tarihi 06-2024
Cilt / Sayı / Sayfa 2024 / 6 / – DOI 10.1007/JHEP06(2024)097
Makale Linki https://hdl.handle.net/11384/154879
UAK Araştırma Alanları
Fen Bilimleri ve Matematik
Özet
A search is presented for the decay of the 125 GeV Higgs boson (H) to a pair of new light pseudoscalar bosons (a), followed by the prompt decay of each a boson to a bottom quark-antiquark pair,. The analysis is performed using a data sample of proton-proton collisions collected with the CMS detector at a center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 138 fb− 1. To reduce the background from standard model processes, the search requires the Higgs boson to be produced in association with a leptonically decaying W or Z boson. The analysis probes the production of new light bosons in a 15< ma< 60 GeV mass range. Assuming the standard model predictions for the Higgs boson production cross sections for pp→ WH and ZH, model independent upper limits at 95% confidence level are derived for the branching fraction. The combined WH and ZH observed upper limit on the branching fraction ranges from 1.10 for ma= 20 GeV to 0.36 for ma= 60 GeV, complementing other measurements in the μμττ, ττττ and bbℓℓ (ℓ= μ, τ) channels
Anahtar Kelimeler
Beyond Standard Model | Hadron-Hadron Scattering | Supersymmetry