Pure gravity mediation with m3/2=10-100TeV

Physical review D: Particles and fields 05/2012; DOI: 10.1103/PhysRevD.85.095011
Source: arXiv

ABSTRACT Recently, the ATLAS and CMS collaborations reported exciting hints of a
standard model-like Higgs boson with a mass around 125 GeV. Such a Higgs
boson mass can be easily obtained in the minimal supersymmetric standard
model based on the “pure gravity mediation model” where the
sfermion masses and the Higgs mass parameters are in the tens to
hundreds TeV range, while the gauginos are in the hundreds GeV to TeV
range. In this paper, we discuss details of the gaugino mass spectrum in
the pure gravity mediation model. We also discuss the signals of the
model at current and future experiments such as cosmic-ray observations
and the LHC experiments. In particular, we show that the parameter space
which is consistent with the thermal leptogenesis can be fully surveyed
experimentally in the foreseeable future.

  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: We investigate the sensitivity of existing LHC searches to the charginos and neutralinos of the MSSM when all the other superpartners are decoupled. In this limit, the underlying parameter space reduces to a simple four-dimensional set $\{M_1,\,M_2,\,\mu,\,\tan\beta\}$. We examine the constraints placed on this parameter space by a broad range of LHC searches taking into account the full set of relevant production and decay channels. We find that the exclusions implied by these searches exceed existing limits from LEP only for smaller values of the Bino mass $M_1 \lesssim 150$ GeV. Our results have implications for MSSM dark matter and electroweak baryogenesis.
    Journal of High Energy Physics 09/2014; 2014(12). · 6.22 Impact Factor
  • [Show abstract] [Hide abstract]
    ABSTRACT: We discuss the minimal supersymmetric standard model with "split-family" spectrum where the sfermions in the first two generations are in the hundreds GeV to a TeV range while the sfermions in the third generation are in the range of tens TeV. With the split-family spectrum, the deviation of the muon g - 2 and the observed Higgs boson mass are explained simultaneously. It is predicted that the gluino and the squarks in the first two generations are within the reach of the LHC experiments in most favored parameter space for the universal gaugino mass, which can be tested by searching for events with missing transverse energy or events with stable charged massive particles. We also point out that the split-family scenario can be consistent with the focus point scenario for the non-universal gaugino masses where the required μ-term is in the hundreds GeV range.
    Journal of High Energy Physics 08/2013; · 6.22 Impact Factor
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: We consider chargino-neutralino production, $\tilde{\chi}_2^0 \tilde{\chi}_1^\pm \to (h \tilde{\chi}_1^0)(W^\pm \tilde{\chi}_1^0)$, which results in Higgs boson final states that subsequently decay (inclusively) to leptons (either $h\rightarrow \tau^+\tau^-$ or $h\rightarrow W^+W^- \to (e^+e^-, \mu^+\mu^-, \tau^+\tau^-)+E_T^\mathrm{miss}$). Such channels are dominant in large regions of the allowed supersymmetric parameter space for many concrete supersymmetric models. The existence of leptons allows for good control over the backgrounds, rendering this channel competitive to the conventional $h\rightarrow b\bar{b}$ channel that has been previously used to impose constraints. We include hadronic decays of the $\tau$ leptons in our analysis through a $\tau$-identification algorithm. We consider integrated luminosities of 100 fb$^{-1}$, 300 fb$^{-1}$ and 3000 fb$^{-1}$, for an LHC running at $pp$ centre-of-mass energy of 14 TeV and provide the expected constraints on the $M_2$-$M_1$ plane.
    Journal of High Energy Physics 04/2014; 2014(8). · 6.22 Impact Factor


Available from