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Probing U(1) extensions of the MSSM at the LHC Run I and in dark matter searches | | G. Belanger
; J. Da Silva
; U. Laa
; A. Pukhov
; | | Date: |
23 May 2015 | | 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. | | Source: | arXiv, 1505.6243 | | Services: | Forum | Review | PDF | Favorites | |
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