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Title: Evidence for WW production from double-parton interactions in proton-proton collisions at $$\sqrt{s} =$$ 13 TeV

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 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 $$\pm$$ 0.28 (stat) $$\pm$$ 0.28 (syst) pb.

Authors:
Publication Date:
Research Org.:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States); Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
Contributing Org.:
CMS
OSTI Identifier:
1568851
Report Number(s):
FERMILAB-PUB-19-499-CMS; arXiv:1909.06265; CMS-SMP-18-015; CERN-EP-2019-167
oai:inspirehep.net:1753976
DOE Contract Number:  
AC02-07CH11359
Resource Type:
Journal Article
Journal Name:
TBD
Additional Journal Information:
Journal Name: TBD
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats

Sirunyan, Albert M, and et al. Evidence for WW production from double-parton interactions in proton-proton collisions at $\sqrt{s} =$ 13 TeV. United States: N. p., 2019. Web.
Sirunyan, Albert M, & et al. Evidence for WW production from double-parton interactions in proton-proton collisions at $\sqrt{s} =$ 13 TeV. United States.
Sirunyan, Albert M, and et al. Fri . "Evidence for WW production from double-parton interactions in proton-proton collisions at $\sqrt{s} =$ 13 TeV". United States. https://www.osti.gov/servlets/purl/1568851.
@article{osti_1568851,
title = {Evidence for WW production from double-parton interactions in proton-proton collisions at $\sqrt{s} =$ 13 TeV},
author = {Sirunyan, Albert M and et al.},
abstractNote = {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 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 $\pm$ 0.28 (stat) $\pm$ 0.28 (syst) pb.},
doi = {},
journal = {TBD},
number = ,
volume = ,
place = {United States},
year = {2019},
month = {9}
}