Search for Higgs and Z boson decays to J/ψ or Y pairs in the four-muon final state 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 Physics Letters Section B Nuclear Elementary Particle and High Energy Physics (Q1)
Dergi ISSN 0370-2693 Dergi Bilgileri (2019)
Makale Dili İngilizce Basım Tarihi 10-2019
Cilt / Sayı / Sayfa 797 / 1 / 134811–0 DOI 10.1016/j.physletb.2019.134811
Makale Linki https://www.sciencedirect.com/science/article/am/pii/S0370269319305210?via%3Dihub
UAK Araştırma Alanları
Fen Bilimleri ve Matematik
Özet
A search for decays of the Higgs and Z boson to pairs of J/ψ or Y (nS)(n= 1, 2, 3) mesons, with their subsequent decay to μ+ μ− pairs, is presented. The analysis uses data from proton-proton collisions at s= 13 TeV, collected with the CMS detector at the LHC in 2017 and corresponding to an integrated luminosity of 37.5 fb− 1. While an observation of such a decay with this sample would indicate the presence of physics beyond the standard model, no significant excess is observed. Upper limits at 95% confidence level are placed on the branching fractions of these decays. In the J/ψ pair channel, the limits are 1.8× 10− 3 and 2.2× 10− 6 for the Higgs and Z boson, respectively, while in the combined Y (nS) pair channel, the limits are 1.4× 10− 3 and 1.5× 10− 6, respectively, when the mesons from the Higgs and Z boson decay are assumed to be unpolarized. When fully longitudinal and transverse polarizations are …
Anahtar Kelimeler
CMS | Higgs boson | Rare decays | Standard model physics | Z boson