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High Energy Physics - Phenomenology

arXiv:1505.06243 (hep-ph)
[Submitted on 22 May 2015 (v1), last revised 24 Sep 2015 (this version, v4)]

Title:Probing U(1) extensions of the MSSM at the LHC Run I and in dark matter searches

Authors:G. Belanger, J. Da Silva, U. Laa, A. Pukhov
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Abstract:The U(1) extended supersymmetric standard model (UMSSM) can accommodate a Higgs boson at 125 GeV without relying on large corrections from the top/stop sector. After imposing LHC results on the Higgs sector, on B-physics and on new particle searches as well as dark matter constraints, we show that this model offers two viable dark matter candidates, the right-handed (RH) sneutrino or the neutralino. Limits on supersymmetric partners from LHC simplified model searches are imposed using SModelS and allow for light squarks and gluinos. Moreover the upper limit on the relic abundance often favours scenarios with long-lived particles. Searches for a Z' at the LHC remain the most unambiguous probes of this model. Interestingly, the D-term contributions to the sfermion masses allow to explain the anomalous magnetic moment of the muon in specific corners of the parameter space with light smuons or left-handed (LH) sneutrinos. We finally emphasize the interplay between direct searches for dark matter and LHC simplified model searches.
Comments: 55 pages, 29 figures; v2: references added; v3: clarifications, mostly about presentation and summary of missing topologies, added; v4: matches published version
Subjects: High Energy Physics - Phenomenology (hep-ph); High Energy Physics - Experiment (hep-ex)
Report number: LAPTH-029/15; MAN/HEP/2015/10; MCnet-15-10; LPSC15130
Cite as: arXiv:1505.06243 [hep-ph]
  (or arXiv:1505.06243v4 [hep-ph] for this version)
  https://doi.org/10.48550/arXiv.1505.06243
Journal reference: JHEP 09 (2015) 151
Related DOI: https://doi.org/10.1007/JHEP09%282015%29151

Submission history

From: Jonathan Da Silva [view email]
[v1] Fri, 22 May 2015 23:02:38 UTC (7,515 KB)
[v2] Mon, 1 Jun 2015 13:15:34 UTC (7,515 KB)
[v3] Mon, 17 Aug 2015 19:53:32 UTC (7,883 KB)
[v4] Thu, 24 Sep 2015 18:37:13 UTC (7,877 KB)
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