Evidence for WW/WZ vector boson scattering in the decay channel
νqq produced in association with two jets in proton-proton collisions
at √s = 13 TeV
νqq produced in association with two jets in proton-proton collisions
at √s = 13 TeV
File(s)
Published version
Author(s)
Type
Journal Article
Abstract
Evidence is reported for electroweak (EW) vector boson scattering in the decay channel νqq of two
weak vector bosons WV (V = W or Z), produced in association with two parton jets. The search uses
a data set of proton-proton collisions at 13 TeV collected with the CMS detector during 2016–2018
with an integrated luminosity of 138 fb−1. Events are selected requiring one lepton (electron or muon),
moderate missing transverse momentum, two jets with a large pseudorapidity separation and a large dijet
invariant mass, and a signature consistent with the hadronic decay of a W/Z boson. The cross section is
computed in a fiducial phase space defined at parton level requiring all parton transverse momenta
pT > 10 GeV and at least one pair of outgoing partons with invariant mass mqq > 100 GeV. The measured
and expected EW WV production cross sections are 1.90+0.53
−0.46 pb and 2.23+0.08
−0.11(scale) ± 0.05(PDF) pb,
respectively, where PDF is the parton distribution function. The observed EW signal strength is μEW =
0.85 ± 0.12 (stat)
+0.19
−0.17 (syst), corresponding to a signal significance of 4.4 standard deviations with 5.1
expected, and it is measured keeping the quantum chromodynamics (QCD) associated diboson production
fixed to the standard model prediction. This is the first evidence of vector boson scattering in the νqq
decay channel at LHC. The simultaneous measurement of the EW and QCD associated diboson production
agrees with the standard model prediction.
weak vector bosons WV (V = W or Z), produced in association with two parton jets. The search uses
a data set of proton-proton collisions at 13 TeV collected with the CMS detector during 2016–2018
with an integrated luminosity of 138 fb−1. Events are selected requiring one lepton (electron or muon),
moderate missing transverse momentum, two jets with a large pseudorapidity separation and a large dijet
invariant mass, and a signature consistent with the hadronic decay of a W/Z boson. The cross section is
computed in a fiducial phase space defined at parton level requiring all parton transverse momenta
pT > 10 GeV and at least one pair of outgoing partons with invariant mass mqq > 100 GeV. The measured
and expected EW WV production cross sections are 1.90+0.53
−0.46 pb and 2.23+0.08
−0.11(scale) ± 0.05(PDF) pb,
respectively, where PDF is the parton distribution function. The observed EW signal strength is μEW =
0.85 ± 0.12 (stat)
+0.19
−0.17 (syst), corresponding to a signal significance of 4.4 standard deviations with 5.1
expected, and it is measured keeping the quantum chromodynamics (QCD) associated diboson production
fixed to the standard model prediction. This is the first evidence of vector boson scattering in the νqq
decay channel at LHC. The simultaneous measurement of the EW and QCD associated diboson production
agrees with the standard model prediction.
Date Issued
2022-11
Date Acceptance
2022-09-06
Citation
Physics Letters B, 2022, 834, pp.1-28
ISSN
0370-2693
Publisher
Elsevier BV
Start Page
1
End Page
28
Journal / Book Title
Physics Letters B
Volume
834
Copyright Statement
© 2022 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY license
(http://creativecommons.org/licenses/by/4.0/). Funded by SCOAP3.
(http://creativecommons.org/licenses/by/4.0/). Funded by SCOAP3.
License URL
Identifier
http://sciencedirect.com/science/article/pii/S037026932200572X?via%3Dihub
Subjects
hep-ex
hep-ex
Nuclear & Particles Physics
0105 Mathematical Physics
0201 Astronomical and Space Sciences
0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics
Publication Status
Published
Article Number
137438
Date Publish Online
2022-09-09