Measurement of detector-corrected observables sensitive to the anomalous production of events with jets and large missing transverse momentum in pp collisions at root s=13 TeV using the ATLAS detector
File(s)10.1140%2Fepjc%2Fs10052-017-5315-6.pdf (2.62 MB)
Published version
Author(s)
Type
Journal Article
Abstract
Observables sensitive to the anomalous production
of events containing hadronic jets and missing momentum
in the plane transverse to the proton beams at the Large
Hadron Collider are presented. The observables are defined
as a ratio of cross sections, for events containing jets and large
missing transverse momentum to events containing jets and a
pair of charged leptons from the decay of a Z/γ ∗ boson. This
definition minimises experimental and theoretical systematic
uncertainties in the measurements. This ratio is measured
differentially with respect to a number of kinematic properties
of the hadronic system in two phase-space regions; one
inclusive single-jet region and one region sensitive to vectorboson-fusion
topologies. The data are found to be in agreement
with the Standard Model predictions and used to constrain
a variety of theoretical models for dark-matter production,
including simplified models, effective field theory models,
and invisible decays of the Higgs boson. The measurements
use 3.2 fb−1 of proton–proton collision data recorded
by the ATLAS experiment at a centre-of-mass energy of
13 TeV and are fully corrected for detector effects, meaning
that the data can be used to constrain new-physics models
beyond those shown in this paper.
of events containing hadronic jets and missing momentum
in the plane transverse to the proton beams at the Large
Hadron Collider are presented. The observables are defined
as a ratio of cross sections, for events containing jets and large
missing transverse momentum to events containing jets and a
pair of charged leptons from the decay of a Z/γ ∗ boson. This
definition minimises experimental and theoretical systematic
uncertainties in the measurements. This ratio is measured
differentially with respect to a number of kinematic properties
of the hadronic system in two phase-space regions; one
inclusive single-jet region and one region sensitive to vectorboson-fusion
topologies. The data are found to be in agreement
with the Standard Model predictions and used to constrain
a variety of theoretical models for dark-matter production,
including simplified models, effective field theory models,
and invisible decays of the Higgs boson. The measurements
use 3.2 fb−1 of proton–proton collision data recorded
by the ATLAS experiment at a centre-of-mass energy of
13 TeV and are fully corrected for detector effects, meaning
that the data can be used to constrain new-physics models
beyond those shown in this paper.
Date Issued
2017-11-15
Date Acceptance
2017-10-17
Citation
European Physical Journal C: Particles and Fields, 2017, 77 (11)
ISSN
1434-6044
Publisher
Springer Verlag (Germany)
Journal / Book Title
European Physical Journal C: Particles and Fields
Volume
77
Issue
11
Copyright Statement
© CERN for the benefit of the ATLAS collaboration 2017. This article is an open access publication
Subjects
Science & Technology
Physical Sciences
Physics, Particles & Fields
Physics
DARK-MATTER SEARCHES
PARTON DISTRIBUTIONS
LHC
PARTICLE
Publication Status
Published
Article Number
765