Search for dark matter produced in association with a leptonically decaying
Z
boson in proton-proton collisions at
s
=
13
Te
.
Z
boson in proton-proton collisions at
s
=
13
Te
.
File(s)Sirunyan2021_Article_SearchForDarkMatterProducedInA.pdf (2.32 MB)
Published version
Author(s)
Type
Journal Article
Abstract
A search for dark matter particles is performed using events with a Z boson candidate and large missing transverse momentum. The analysis is based on proton-proton collision data at a center-of-mass energy of 13
Te
, collected by the CMS experiment at the LHC in 2016-2018, corresponding to an integrated luminosity of 137
fb
-
1
. The search uses the decay channels
Z
→
e
e
and
Z
→
μ
μ
. No significant excess of events is observed over the background expected from the standard model. Limits are set on dark matter particle production in the context of simplified models with vector, axial-vector, scalar, and pseudoscalar mediators, as well as on a two-Higgs-doublet model with an additional pseudoscalar mediator. In addition, limits are provided for spin-dependent and spin-independent scattering cross sections and are compared to those from direct-detection experiments. The results are also interpreted in the context of models of invisible Higgs boson decays, unparticles, and large extra dimensions.
Te
, collected by the CMS experiment at the LHC in 2016-2018, corresponding to an integrated luminosity of 137
fb
-
1
. The search uses the decay channels
Z
→
e
e
and
Z
→
μ
μ
. No significant excess of events is observed over the background expected from the standard model. Limits are set on dark matter particle production in the context of simplified models with vector, axial-vector, scalar, and pseudoscalar mediators, as well as on a two-Higgs-doublet model with an additional pseudoscalar mediator. In addition, limits are provided for spin-dependent and spin-independent scattering cross sections and are compared to those from direct-detection experiments. The results are also interpreted in the context of models of invisible Higgs boson decays, unparticles, and large extra dimensions.
Date Issued
2021-01-11
Date Acceptance
2020-12-07
Citation
European Physical Journal C: Particles and Fields, 2021, 81 (1), pp.13-13
ISSN
1124-1861
Publisher
EDP Sciences
Start Page
13
End Page
13
Journal / Book Title
European Physical Journal C: Particles and Fields
Volume
81
Issue
1
Copyright Statement
© CERN for the benefit of the CMS collaboration 2021. 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 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://creativecommons.org/licenses/by/4.0/.
License URL
Identifier
https://www.ncbi.nlm.nih.gov/pubmed/33493254
PII: 8739
Subjects
CMS Collaboration
hep-ex
hep-ex
Nuclear & Particles Physics
0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics
0206 Quantum Physics
Publication Status
Published
Coverage Spatial
France
Date Publish Online
2021-01-11