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Title
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Observation of same-sign WW production from double parton scattering in proton-proton collisions at √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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| The first observation of the production of (WW +/-)-W-+/- 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(-1 )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)( -8.6)(+9.5)(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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Language
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English
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Source (journal)
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Physical review letters. - New York, N.Y., 1958, currens
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Publication
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New York, N.Y.
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American Physical Society
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2023
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ISSN
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0031-9007
[print]
1079-7114
[online]
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DOI
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10.1103/PHYSREVLETT.131.091803
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Volume/pages
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131
:9
(2023)
, p. 1-20
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Article Reference
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091803
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ISI
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001102717200001
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Pubmed ID
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37721845
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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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Full text (open access)
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