scholarly journals Dark matter from dynamical SUSY breaking

2010 ◽  
Vol 2010 (6) ◽  
Author(s):  
JiJi Fan ◽  
Jesse Thaler ◽  
Lian-Tao Wang
Keyword(s):  
Dark Matter ◽  
Susy Breaking

scholarly journals SOFT LEPTOGENESIS AND GRAVITINO DARK MATTER IN GAUGE MEDIATION

2011 ◽  
Vol 20 (08) ◽  
pp. 1533-1538
Author(s):  
KOICHI HAMAGUCHI ◽  
N. YOKOZAKI
Keyword(s):  
Dark Matter ◽  
Baryon Asymmetry ◽  
Susy Breaking ◽  
Gauge Mediation ◽  
Susy Particle ◽  
The Universe

In gauge mediated SUSY breaking models, the gravitino is generally the lightest SUSY particle and can be a candidate for a dark matter. However the viable abundance of the gravitino requires rather low reheating temparature. With this low reheating temparature, it is difficult to explain the baryon asymmetry of the universe with thermal leptogenesis. We consider the extended scenario of the gauge mediation, which generates A-terms. In this extended scenario, soft leptogenesis works successfully with the low reheating temperature. Therefore we can explain the baryon asymmetry and gravitino dark matter simultaneously.

scholarly journals Supergravity Model of Inflation and Explaining IceCube HESE Data via PeV Dark Matter Decay

2020 ◽  
Vol 2020 ◽  
pp. 1-14
Author(s):  
Girish Kumar Chakravarty ◽  
Najimuddin Khan ◽  
Subhendra Mohanty
Keyword(s):  
Dark Matter ◽  
Scalar Field ◽  
Neutrino Flux ◽  
Gauge Coupling ◽  
Susy Breaking ◽  
Particle Spectrum ◽  
Energy Particle ◽  
Hidden Sector ◽  
Kähler Potential ◽  
Gut Scale

We construct a unified model of inflation and PeV dark matter with an appropriate choice of no-scale Kähler potential, superpotential, and gauge kinetic function in terms of MSSM fields and hidden sector Polonyi field. The model is consistent with the CMB observations and can explain the PeV neutrino flux observed at IceCube HESE. A Starobinsky-like Higgs-sneutrino plateau inflation is obtained from the D-term SUGRA potential while F-term being subdominant during inflation. To get PeV dark matter, SUSY breaking at PeV scale is achieved through Polonyi field. This sets the scale for soft SUSY breaking parameters m0,m1/2,A0 at the GUT scale in terms of the parameters of the model. The low-energy particle spectrum is obtained by running the RGEs. We show that the ~125 GeV Higgs and the gauge coupling unification can be obtained in this model. The 6 PeV bino-type dark matter is a subdominant fraction (~11%) of the relic density, and its decay gives the PeV scale neutrino flux observed at IceCube by appropriately choosing the couplings of the R-parity violating operators. Also, we find that there is degeneracy in scalar field parameters γ,β and coupling ζ value in producing the correct amplitude of CMB power spectrum. However, the value of parameter tanβ=1.8, which is tightly fixed from the requirement of PeV scale SUSY breaking, removes the degeneracy in the values of the scalar field parameters to provide a unique solution for inflation. In this way, it brings the explanation for dark matter, PeV neutrinos, and inflation within the same framework.

scholarly journals Dark matter andBs→μ+μ−with minimal SO10soft SUSY breaking

2003 ◽  
Vol 2003 (04) ◽  
pp. 037-037 ◽  
Author(s):  
Radovan Dermísek ◽  
Stuart Raby ◽  
Leszek Roszkowski ◽  
Roberto Ruiz de Austri
Keyword(s):  
Dark Matter ◽  
Susy Breaking

scholarly journals WIMP dark matter in gauge-mediated SUSY breaking models and its phenomenology

2010 ◽  
Vol 691 (1) ◽  
pp. 46-55 ◽  
Author(s):  
Junji Hisano ◽  
Kazunori Nakayama ◽  
Shohei Sugiyama ◽  
Tomohiro Takesako ◽  
Masato Yamanaka
Keyword(s):  
Dark Matter ◽  
Susy Breaking

scholarly journals Is the magnitude of the Peccei–Quinn scale set by the landscape?

2019 ◽  
Vol 79 (11) ◽  
Author(s):  
Howard Baer ◽  
Vernon Barger ◽  
Dibyashree Sengupta ◽  
Hasan Serce ◽  
Kuver Sinha ◽  
...  
Keyword(s):  
Dark Matter ◽  
Susy Breaking ◽  
Electroweak Symmetry Breaking ◽  
Boson Mass ◽  
Global Symmetry ◽  
Higgs Boson Mass ◽  
Electroweak Symmetry ◽  
Misalignment Angle ◽  
Intermediate Scale ◽  
Supersymmetric Models

Abstract The value of the Higgs boson mass plus the lack of signal at LHC13 has led to a naturalness crisis for supersymmetric models. In contrast, rather general considerations of the string theory landscape imply a mild statistical draw towards large soft SUSY breaking terms tempered by the requirement of proper electroweak symmetry breaking where SUSY contributions to the weak scale are not too far from $$m_{weak}\sim 100$$mweak∼100 GeV. Such a picture leads to the prediction that $$m_h\simeq 125$$mh≃125 GeV while most sparticles are beyond current LHC reach. Here we explore the possibility that the magnitude of the Peccei–Quinn (PQ) scale $$f_a$$fa is also set by string landscape considerations within the framework of a compelling SUSY axion model. First, we examine the case where the PQ symmetry arises as an accidental approximate global symmetry from a more fundamental gravity-safe $$\mathbb {Z}_{24}^R$$Z24R symmetry and where the SUSY $$\mu $$μ parameter arises from a Kim-Nilles operator. The pull towards large soft terms then also pulls the PQ scale as large as possible. Unless this is tempered by rather severe (unknown) cosmological or anthropic bounds on the density of dark matter, then we would expect a far greater abundance of dark matter than is observed. This conclusion cannot be negated by adopting a tiny axion misalignment angle $$\theta _i$$θi because WIMPs are also overproduced at large $$f_a$$fa. Hence, we conclude that setting the PQ scale via anthropics is highly unlikely. Instead, requiring soft SUSY breaking terms of order the gravity-mediation scale $$m_{3/2}\sim 10$$m3/2∼10–100 TeV places the mixed axion–neutralino dark matter abundance into the intermediate scale sweet zone where $$f_a\sim 10^{11}$$fa∼1011–$$10^{12}$$1012 GeV. We compare our analysis to the more general case of a generic SUSY DFSZ axion model with uniform selection on $$\theta _i$$θi but leading to the measured dark matter abundance: this approach leads to a preference for $$f_a\sim 10^{12}$$fa∼1012 GeV.

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