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Title
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Evidence for WW production from double-parton interactions in proton-proton collisions at root s=13 TeV
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Author
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Institution/Organisation
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CMS Collaboration
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Abstract
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| A search forWWproduction 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 13 TeV. The analyzed data set corresponds to an integrated luminosity of 77.4 fb-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. |
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Language
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English
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Source (journal)
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European physical journal : C : particles and fields. - Berlin
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Publication
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Berlin
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2020
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ISSN
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1434-6044
1434-6052
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DOI
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10.1140/EPJC/S10052-019-7541-6
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Volume/pages
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80
:1
(2020)
, 26 p.
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Article Reference
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41
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ISI
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000522202400001
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Medium
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E-only publicatie
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Full text (Publisher's DOI)
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