Search for a standard model-like Higgs boson in the μ+μ− and e+e− decay channels at the LHC
Yazarlar (1)
Doç. Dr. Mustafa Numan BAKIRCI Tokat Gaziosmanpaşa Üniversitesi, Türkiye
| Makale Türü |
Özgün Makale
(SCOPUS dergilerinde yayınlanan tam makale)
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| Dergi Adı | Physics Letters Section B Nuclear Elementary Particle and High Energy Physics | ||
| Dergi ISSN | 0370-2693 Wos Dergi Scopus Dergi | ||
| Makale Dili | İngilizce | Basım Tarihi | 05-2015 |
| Cilt / Sayı / Sayfa | 744 / 1 / 184–207 | DOI | 10.1016/j.physletb.2015.03.048 |
| Makale Linki | https://www.sciencedirect.com/science/article/am/pii/S0370269315002117?via%3Dihub | ||
| UAK Araştırma Alanları |
Fen Bilimleri ve Matematik
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| Özet |
| A search is presented for a standard model-like Higgs boson decaying to the μ+μ− or e+e− final states based on proton–proton collisions recorded by the CMS experiment at the CERN LHC. The data correspond to integrated luminosities of 5.0 fb−1 at a centre-of-mass energy of 7 TeV and 19.7 fb−1 at 8 TeV for the μ+μ− search, and of 19.7 fb−1 at 8 TeV for the e+e− search. Upper limits on the production cross section times branching fraction at the 95% confidence level are reported for Higgs boson masses in the range from 120 to 150 GeV. For a Higgs boson with a mass of 125 GeV decaying to μ+μ−, the observed (expected) upper limit on the production rate is found to be 7.4 (6.5−1.9 +2.8) times the standard model value. This corresponds to an upper limit on the branching fraction of 0.0016. Similarly, for e+e−, an upper limit of 0.0019 is placed on the branching fraction, which is ≈3.7×105 times the standard model value. These results, together with recent evidence of the 125 GeV boson coupling to τ-leptons with a larger branching fraction consistent with the standard model, confirm that the leptonic couplings of the new boson are not flavour-universal. © 2015 CERN for the benefit of the CMS Collaboration. |
| Anahtar Kelimeler |
| CMS | Dielectron | Dilepton | Dimuon | Electron | Higgs | Higgs boson | Lepton | Muon | Physics |
Science Direct
Search for a standard model-like Higgs boson in the μ+μ− and e+e− decay channels at the LHC
BM Sürdürülebilir Kalkınma Amaçları
| Atıf Sayıları | |
| Scopus | 88 |