Search for direct pair production of scalar top quarks in the single- and dilepton channels in proton-proton collisions at √s=8 TeV
Yazarlar (1)
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 (2016)
Makale Dili İngilizce Basım Tarihi 07-2016
Cilt / Sayı / Sayfa 2016 / 7 / 1–49 DOI 10.1007/JHEP07(2016)027
Makale Linki https://hdl.handle.net/11424/241527
UAK Araştırma Alanları
Fen Bilimleri ve Matematik
Özet
Results: are reported from a search for the top squark t ˜ 1, the lighter of the two supersymmetric partners of the top quark. The data sample corresponds to 19.7 fb−1 of proton-proton collisions at s=8 TeV collected with the CMS detector at the LHC. The search targets t˜1→bχ˜1± and t˜1→t(∗)χ˜10 decay modes, where χ˜1± and χ˜10 are the lightest chargino and neutralino, respectively. The reconstructed final state consists of jets, b jets, missing transverse energy, and either one or two leptons. Leading backgrounds are determined from data. No significant excess in data is observed above the expectation from standard model processes. The results exclude a region of the two-dimensional plane of possible t ˜ 1 and χ˜10 masses. The highest excluded t ˜ 1 and χ˜10 masses are about 700 GeV and 250 GeV, respectively.[Figure not available: see fulltext.]
Anahtar Kelimeler
Hadron-Hadron scattering (experiments) | Supersymmetry | top squark