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Search for dark matter with scalar or pseudoscalar coupling in Run 2 data
A sensitivity study for (pseudo)scalar coupling dark matter mediated by a scalar medi- ator in comparison with axial vector coupling dark matter mediated by a vector mediator has been performed. The analysis used data collected in 2015 with the CMS detector, at an LHC center-of mass energy of 13 TeV...
Autor principal: | |
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Lenguaje: | eng |
Publicado: |
2017
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Materias: | |
Acceso en línea: | http://cds.cern.ch/record/2285516 |
Sumario: | A sensitivity study for (pseudo)scalar coupling dark matter mediated by a scalar medi-
ator in comparison with axial vector coupling dark matter mediated by a vector mediator
has been performed. The analysis used data collected in 2015 with the CMS detector,
at an LHC center-of mass energy of 13 TeV corresponding to an integrated luminosity of
41.9 pb−1. No significant deviation of the transverse mass distribution of the electron and
neutrino system from the Standard Model prediction has been found. Expected limits
have been determined at a 95% confidence level for all used models and the sensitivity is
compared using different kinematic selections. The so called W′static selection yields the
lowest cross section limits for all models, when using high pT -triggers. For low Mmed, the
signal from the axial vector model with ξ=-1 yields the lowest cross section limits, while
for high Mmed signals of pseudoscalar or scalar dark matter yield the lowest cross section
limits. For 1, 3 and 10 fb−1of integrated luminosity expected limits are produced in order
to provide an outlook for the sensitivity. |
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