Search for dark matter in events with a leptoquark and missing transverse momentum in proton-proton collisions at 13 TeV
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Issue Date
2019-08-10Author
Sirunyan, A.M.
Sanders, Stephen J.
The CMS Collaboration
Publisher
Elsevier
Type
Article
Article Version
Scholarly/refereed, publisher version
Rights
© 2019 The Author(s). Published by Elsevier B.V.
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A search is presented for dark matter in proton-proton collisions at a center-of-mass energy of √s = 13 TeV using events with at least one high transverse momentum (pT) muon, at least one high-pT jet, and large missing transverse momentum. The data were collected with the CMS detector at the CERN LHC in 2016 and 2017, and correspond to an integrated luminosity of 77.4 fb−1. In the examined scenario, a pair of scalar leptoquarks is assumed to be produced. One leptoquark decays to a muon and a jet while the other decays to dark matter and low-pT standard model particles. The signature for signal events would be significant missing transverse momentum from the dark matter in conjunction with a peak at the leptoquark mass in the invariant mass distribution of the highest pT muon and jet. The data are observed to be consistent with the background predicted by the standard model. For the first benchmark scenario considered, dark matter masses up to 500 GeV are excluded for leptoquark masses mLQ ≈ 1400 GeV, and up to 300 GeV for mLQ ≈ 1500 GeV. For the second benchmark scenario, dark matter masses up to 600 GeV are excluded for mLQ ≈ 1400 GeV.
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This work is licensed under a Creative Commons Attribution 4.0 International License.
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Citation
A.M. Sirunyan et al., "Search for dark matter in events with a leptoquark and missing transverse momentum in proton-proton collisions at 13 TeV", Physics Letters B, Volume 795, 2019, Pages 76-99, ISSN 0370-2693, https://doi.org/10.1016/j.physletb.2019.05.046.
(http://www.sciencedirect.com/science/article/pii/S0370269319303673)
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