It is well known that excessively heavy supersymmetric particles(sparticles)are disfavored to explain the(g−2)_(μ) anomaly,but some people overlook that moderately light sparticles are also disfavored by the LHC prob...It is well known that excessively heavy supersymmetric particles(sparticles)are disfavored to explain the(g−2)_(μ) anomaly,but some people overlook that moderately light sparticles are also disfavored by the LHC probes of supersymmetry.We take the Next-to-Minimal Supersymmetric Standard Model as an example to emphasize the latter point.It is found that,if the theory is required to explain the anomaly at 2σlevel and meanwhile keep consistent with the LHC results,the following lower bounds may be set:tanβ&20,|M_(1)|&275 GeV,M_(2)&300 GeV,μ&460 GeV,m_(μL)&310 GeV,and m_(μR)&350 GeV,where M_(1)and M_(2)denote gaugino masses,μrepresents the Higgsino mass,and m_(μL)and m_(μR)are the mass of Smuons with L and R denot-ing their dominant chiral component.This observation has significant impacts on dark matter(DM)physics,e.g.,the popular Z-and Higgs-funnel regions have been excluded,and the Bino-dominated neutralino DM has to co-annihilate with the Wino-dominated electroweakinos(in most cases)and/or Smuons(in few cases)to obtain the correct density.It is also inferred that these conclusions keep valid for the Minimal Supersymmetric Standard Model since the underlying physics for the bounds are the same.展开更多
基金supported by the National Natural Science Foundation of China(Grant No.12075076)。
文摘It is well known that excessively heavy supersymmetric particles(sparticles)are disfavored to explain the(g−2)_(μ) anomaly,but some people overlook that moderately light sparticles are also disfavored by the LHC probes of supersymmetry.We take the Next-to-Minimal Supersymmetric Standard Model as an example to emphasize the latter point.It is found that,if the theory is required to explain the anomaly at 2σlevel and meanwhile keep consistent with the LHC results,the following lower bounds may be set:tanβ&20,|M_(1)|&275 GeV,M_(2)&300 GeV,μ&460 GeV,m_(μL)&310 GeV,and m_(μR)&350 GeV,where M_(1)and M_(2)denote gaugino masses,μrepresents the Higgsino mass,and m_(μL)and m_(μR)are the mass of Smuons with L and R denot-ing their dominant chiral component.This observation has significant impacts on dark matter(DM)physics,e.g.,the popular Z-and Higgs-funnel regions have been excluded,and the Bino-dominated neutralino DM has to co-annihilate with the Wino-dominated electroweakinos(in most cases)and/or Smuons(in few cases)to obtain the correct density.It is also inferred that these conclusions keep valid for the Minimal Supersymmetric Standard Model since the underlying physics for the bounds are the same.
