Status of CMSSM in light of current LHC Run-2 and LUX data

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Abstract

Motivated by the latest results of the LHC Run-2 and LUX experiments, we examine the status of the constrained minimal supersymmetric standard model by performing a global fit. We construct a likelihood function including the electroweak precision observables, B-physics measurements, LHC Run-1 and -2 data of SUSY direct searches, Planck observation of the dark matter relic density and the combined LUX Run-3 and -4 detection limits. Based on the profile likelihood functions of 1 billion samples, we obtain the following observations: (i) The stau coannihilation region has been mostly excluded by the latest LHC Run-2 data; (ii) The focus point region has been largely covered by the LUX-2016 limits while the A-funnel region has been severely restricted by flavor observables like Bs→μ+μ−. The remaining parts of both regions will be totally covered by the future LZ dark matter experiment; (iii) Part of the stop coannihilation region may be detected with higher integrated luminosity LHC; (iv) The StauC&AF hybrid region still survives considering both LHC and dark matter experiments; (v) The masses of the stop, the lightest neutralino and the gluino have been pushed up to 363 GeV, 328 GeV and 1818 GeV, respectively.

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Han, C., Hikasa, K. ichi, Wu, L., Yang, J. M., & Zhang, Y. (2017). Status of CMSSM in light of current LHC Run-2 and LUX data. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 769, 470–476. https://doi.org/10.1016/j.physletb.2017.04.026

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