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Probing U(1) extensions of the MSSM at the LHC Run I and in dark matter searches
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Probing U(1) extensions of the MSSM at the LHC Run I and in dark matter searches
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Journal Article
Probing U(1) extensions of the MSSM at the LHC Run I and in dark matter searches
2015
Overview
A
bstract
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 super-symmetric partners from LHC simplified model searches are imposed using SM
odel
S 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.
Publisher
Springer Berlin Heidelberg
Subject
