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Strong constraints of LUX-2016 results on the natural NMSSM | | Junjie Cao
; Yangle He
; Liangliang Shang
; Wei Su
; Peiwen Wu
; Yang Zhang
; | | Date: |
1 Sep 2016 | | Abstract: | Given the fact that the relatively light Higgsino mass $mu$ favored in the
natural supersymmetry usually results in a sizable scattering cross section
between the neutralino dark matter and the Standard Model nucleon, we study the
impact of the recently updated direct detection bounds from LUX experiment,
including both Spin Independent (SI) and Spin Dependent (SD) measurements, on
the parameter space of natural Next-to-Minimal Supersymmetric Standard Model
(nNMSSM). Different from the common impression that the SI bound is stronger
than the SD one, we find that the SD bound is complementary to the SI bound,
and in some cases much more powerful than the latter, in limiting the nNMSSM
scenarios. After considering the LUX results, the nNMSSM is severely limited,
e.g. for the peculiar scenarios of the NMSSM where the next-to-lightest CP-even
Higgs corresponds to the $125, {
m GeV}$ Higgs boson discovered at the LHC,
the samples obtained in our random scan are excluded by more than $85\%$. By
contrast, the monojet search at the LHC Run-I can not exclude any sample of the
nNMSSM. We also investigate current status of the nNMSSM and conclude that,
although the parameter points with low fine tuning are still attainable, they
are distributed in some isolated parameter islands which are difficult to get.
Future dark matter direct search experiments such as XENON-1T will provide a
better test of the nNMSSM. | | Source: | arXiv, 1609.0204 | | Services: | Forum | Review | PDF | Favorites | |
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