Evidence for WW production from double-parton interactions in proton–proton collisions at √s=13TeV
Authors
Sirunyan, A MTumasyan, A
Adam, W
Ambrogi, F
Adžić, Petar
Ćirković, Predrag

Devetak, Damir

Đorđević, Miloš

Milenović, Predrag
Milošević, Jovan

Stojanović, Milan
Contributors
CMS CollaborationCMS Collaboration (ukupan broj autora: 2293)
Article (Published version)
Metadata
Show full item recordAbstract
A search for WW production from double-parton scattering processes using same-charge electron-muon and dimuon events is reported, based on proton-proton collision data collected at a center-of-mass energy of 13TeV. The analyzed data set corresponds to an integrated luminosity of 77.4fb-1, collected using the CMS detector at the LHC in 2016 and 2017. Multivariate classifiers are used to discriminate between the signal and the dominant background processes. A maximum likelihood fit is performed to extract the signal cross section. This leads to the first evidence for WW production via double-parton scattering, with a significance of 3.9 standard deviations. The measured inclusive cross section is 1.41±0.28(stat)±0.28(syst)pb.
Source:
European Physical Journal C, 2020, 80, 1
DOI: 10.1140/epjc/s10052-019-7541-6
ISSN: 1434-6044