Evidence for WW production from double-parton interactions in proton-proton collisions at root s=13 TeV
File(s)Sirunyan2020_Article_EvidenceForTextWTextWWWProduct.pdf (529.97 KB)
Published version
Author(s)
Type
Journal Article
Abstract
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.
Date Issued
2020-01-17
Date Acceptance
2019-12-09
Citation
European Physical Journal C: Particles and Fields, 2020, 80 (1), pp.1-26
ISSN
1124-1861
Publisher
Springer Verlag (Germany)
Start Page
1
End Page
26
Journal / Book Title
European Physical Journal C: Particles and Fields
Volume
80
Issue
1
Copyright Statement
© CERN for the benefit of the CMS collaboration 2020. This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation,
distribution and reproduction in any medium or format, as long as you
give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes
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ons.org/licenses/by/4.0/.
Funded by SCOAP3.
distribution and reproduction in any medium or format, as long as you
give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes
were made. The images or other third party material in this article
are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not
included in the article’s Creative Commons licence and your intended
use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecomm
ons.org/licenses/by/4.0/.
Funded by SCOAP3.
Identifier
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Subjects
Science & Technology
Physical Sciences
Physics, Particles & Fields
Physics
CMS
WW production
(P)OVER-BAR-P COLLISIONS
MEASURING MASSES
PP COLLISIONS
SCATTERING
PHYSICS
EVENTS
SEARCH
PROBE
LHC
Publication Status
Published
Article Number
ARTN 41
Date Publish Online
2020-01-17