Observation of same-sign WW production from double parton scattering in proton-proton collisions at = 13 TeV
Yazarlar (1)
Doç. Dr. Mustafa Numan BAKIRCI Tokat Gaziosmanpaşa Üniversitesi, Türkiye
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Özgün Makale
(Uluslararası alan indekslerindeki dergilerde yayınlanan tam makale)
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| Dergi Adı | arXiv preprint arXiv:2206.02681 | ||
| Makale Dili | – | Basım Tarihi | 06-2022 |
| Makale Linki | https://arxiv.org/abs/2206.02681 | ||
| UAK Araştırma Alanları |
Yüksek Enerji ve Parçacık Fiziği
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| Özet |
| The first observation of the production of WW bosons from double parton scattering processes using same-sign electron-muon and dimuon events in proton-proton collisions is reported. The data sample corresponds to an integrated luminosity of 138 fb recorded at a center-of-mass energy of 13 TeV using the CMS detector at the CERN LHC. Multivariate discriminants are used to distinguish the signal process from the main backgrounds. A binned maximum likelihood fit is performed to extract the signal cross section. The measured cross section for production of same-sign W bosons decaying leptonically is 80.7 11.2 (stat) (syst) 12.1 (model) fb, whereas the measured fiducial cross section is 6.28 0.81 (stat) 0.69 (syst) 0.37 (model) fb. The observed significance of the signal is 6.2 standard deviations above the background-only hypothesis. |
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