Search for decays of the 125 GeV Higgs boson into a Z boson and a ρ or φ meson
Yazarlar (1)
Prof. Dr. Hasan OĞUL Sinop Üniversitesi, Türkiye
| Makale Türü |
Özgün Makale
(SSCI, AHCI, SCI, SCI-Exp dergilerinde yayınlanan tam makale)
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| Dergi Adı | Journal of High Energy Physics (Q1) | ||
| Dergi ISSN | 1029-8479 Dergi Bilgileri (2020) | ||
| Makale Dili | İngilizce | Basım Tarihi | 11-2020 |
| Cilt / Sayı / Sayfa | 2020 / 11 / 39–0 | DOI | 10.1007/JHEP11(2020)039 |
| Makale Linki | https://hdl.handle.net/11384/149424 | ||
| UAK Araştırma Alanları |
Fen Bilimleri ve Matematik
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| Özet |
| Decays of the 125 GeV Higgs boson into a Z boson and a ρ0 (770) or ϕ (1020) meson are searched for using proton-proton collision data collected by the CMS experiment at the LHC at s√= 13 TeV. The analysed data set corresponds to an integrated luminosity of 137 fb− 1. Events are selected in which the Z boson decays into a pair of electrons or a pair of muons, and the ρ and ϕ mesons decay into pairs of pions and kaons, respectively. No significant excess above the background model is observed. As different polarization states are possible for the decay products of the Z boson and ρ or ϕ mesons, affecting the signal acceptance, scenarios in which the decays are longitudinally or transversely polarized are considered. Upper limits at the 95% confidence level on the Higgs boson branching fractions into Zρ and Zϕ are determined to be 1.04–1.31% and 0.31–0.40%, respectively, where the ranges reflect the considered polarization scenarios; these values are 740–940 and 730–950 times larger than the respective standard model expectations. These results constitute the first experimental limits on the two decay channels. |
| Anahtar Kelimeler |
| Hadron-Hadron scattering (experiments) | Higgs physics | Particle and resonance production |
BM Sürdürülebilir Kalkınma Amaçları
| Atıf Sayıları | |
| Web of Science | 7 |
| Scopus | 9 |
| Google Scholar | 42 |