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High Energy Physics - Phenomenology

arXiv:1610.03997 (hep-ph)
[Submitted on 13 Oct 2016 (v1), last revised 13 Dec 2016 (this version, v2)]

Title:Interference effects of two scalar boson propagators on the LHC search for the singlet fermion DM

Authors:P. Ko, Jinmian Li
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Abstract:A gauge invariant UV-completion for singlet fermion DM interacting with the standard model (SM) particles involves a new singlet scalar. Therefore the model contains two scalar mediators, mixtures of the SM Higgs boson and a singlet scalar boson. Collider phenomenology of the interference effect between these two scalar propagators is studied in this work. This interference effect can be either constructive or destructive in the DM production cross section depending on both singlet scalar and DM masses, and it will soften the final state jets in the full mass region. Applying the CMS mono-jet search to our model, we find the interference effect plays a very important role in the DM search sensitivity, and the DM production cross section of our model is more than one order of magnitude below the LHC sensitivity at current stage.
Comments: 16 pages, 8 figures; published version
Subjects: High Energy Physics - Phenomenology (hep-ph); High Energy Physics - Experiment (hep-ex)
Cite as: arXiv:1610.03997 [hep-ph]
  (or arXiv:1610.03997v2 [hep-ph] for this version)
  https://doi.org/10.48550/arXiv.1610.03997
Journal reference: Phys. Lett. B 765 (2017) 53-61
Related DOI: https://doi.org/10.1016/j.physletb.2016.11.056

Submission history

From: Jinmian Li [view email]
[v1] Thu, 13 Oct 2016 09:50:29 UTC (110 KB)
[v2] Tue, 13 Dec 2016 04:52:51 UTC (104 KB)
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