Search for dark matter in events with a hadronically decaying vector boson and missing transverse momentum in $pp$ collisions at $\sqrt{s} = 13$ TeV with the ATLAS detector - INSPIRE

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Search for dark matter in events with a hadronically decaying vector boson and missing transverse momentum in $pp$ collisions at $\sqrt{s} = 13$ TeV with the ATLAS detector

ATLAS

Collaboration

Jul 30, 2018

56 pages

Published in:

JHEP 10 (2018) 180

Published: Oct 29, 2018

e-Print:

1807.11471 [hep-ex]

DOI:

10.1007/JHEP10(2018)180

PDG: Dark Matter Particle (

{{\mathit X}^{0}}

) Production in Hadron Collisions

Report number:

CERN-EP-2018-083

Experiments:

CERN-LHC-ATLAS

View in:

reference search139 citations

Citations per year

Abstract: (Springer)

A search for dark matter (DM) particles produced in association with a hadronically decaying vector boson is performed using pp collision data at a centre-of-mass energy of

\sqrt{s}=13

TeV corresponding to an integrated luminosity of 36.1 fb

^{−1}

, recorded by the ATLAS detector at the Large Hadron Collider. This analysis improves on previous searches for processes with hadronic decays of W and Z bosons in association with large missing transverse momentum (mono-W/Z searches) due to the larger dataset and further optimization of the event selection and signal region definitions. In addition to the mono-W/Z search, the as yet unexplored hypothesis of a new vector boson Z′ produced in association with dark matter is considered (mono-Z′ search). No significant excess over the Standard Model prediction is observed. The results of the mono-W/Z search are interpreted in terms of limits on invisible Higgs boson decays into dark matter particles, constraints on the parameter space of the simplified vector-mediator model and generic upper limits on the visible cross sections for W/Z+DM production. The results of the mono-Z′ search are shown in the framework of several simplified-model scenarios involving DM production in association with the Z′ boson.

Note:

56 pages in total, author list starting at page 40, 12 figures, 8 tables, submitted to JHEP. All figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/EXOT-2016-23/

Beyond Standard Model
Dark matter
Hadron-Hadron scattering (experiments)
p p: colliding beams
dark matter: associated production
transverse momentum: missing-energy
p p: scattering
W: hadronic decay
Z0: hadronic decay
Z': associated production

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Figures(44)

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