scholarly journals Axion dark matter with high-scale inflation

2014 ◽  
Vol 735 ◽  
pp. 164-167 ◽  
Author(s):  
Eung Jin Chun
Keyword(s):  
2013 ◽  
Vol 87 (3) ◽  
Author(s):  
Junji Hisano ◽  
Koji Ishiwata ◽  
Natsumi Nagata
Keyword(s):  

2014 ◽  
Vol 739 ◽  
pp. 174-179 ◽  
Author(s):  
Shinta Kasuya ◽  
Masahiro Kawasaki
Keyword(s):  

2015 ◽  
Vol 92 (1) ◽  
Author(s):  
Nabarun Chakrabarty ◽  
Dilip Kumar Ghosh ◽  
Biswarup Mukhopadhyaya ◽  
Ipsita Saha

2021 ◽  
Vol 2021 (5) ◽  
Author(s):  
Rupert Coy ◽  
Thomas Hambye

Abstract If the stability of the dark matter (DM) particle is due to an accidental symmetry, nothing prevents UV physics from destabilising it by inducing DM decays suppressed by powers of the UV scale. The seesaw physics, presumably at the origin of neutrino mass, could induce such a decay. We show that if the seesaw scale lies around the usual Weinberg operator scale, the induced DM decay could generically lead to neutrino lines whose intensity is of the order of the present sensitivity of neutrino telescopes. We illustrate this possibility with models in which the DM is made of the gauge boson(s) of an abelian or non-abelian gauge symmetry.


2021 ◽  
Vol 81 (6) ◽  
Author(s):  
John Ellis ◽  
Jason L. Evans ◽  
Natsumi Nagata ◽  
Keith A. Olive

AbstractWe explore a missing-partner model based on the minimal SU(5) gauge group with $$\mathbf{75} $$ 75 , $$\mathbf{50} $$ 50 and $$\overline{\mathbf{50 }}$$ 50 ¯ Higgs representations, assuming a super-GUT CMSSM scenario in which soft supersymmetry-breaking parameters are universal at some high scale $$M_{\mathrm{in}}$$ M in above the GUT scale $$M_{\mathrm{GUT}}$$ M GUT . We identify regions of parameter space that are consistent with the cosmological dark matter density, the measured Higgs mass and the experimental lower limit on $$\tau (p \rightarrow K^+ \nu )$$ τ ( p → K + ν ) . These constraints can be satisfied simultaneously along stop coannihilation strips in the super-GUT CMSSM with $$\tan \beta \sim $$ tan β ∼ 3.5–5 where the input gaugino mass $$m_{1/2} \sim $$ m 1 / 2 ∼ 15–25 TeV, corresponding after strong renormalization by the large GUT Higgs representations between $$M_{\mathrm{in}}$$ M in and $$M_{\mathrm{GUT}}$$ M GUT to $$m_{\mathrm{LSP}}, m_{{\tilde{t}}_1} \sim $$ m LSP , m t ~ 1 ∼ 2.5–5 TeV and $$m_{{\tilde{g}}} \sim $$ m g ~ ∼ 13–20 TeV, with the light-flavor squarks significantly heavier. We find that $$\tau (p \rightarrow K^+ \nu ) \lesssim 3 \times 10^{34}$$ τ ( p → K + ν ) ≲ 3 × 10 34  years throughout the allowed range of parameter space, within the range of the next generation of searches with the JUNO, DUNE and Hyper-Kamiokande experiments.


2014 ◽  
Vol 113 (13) ◽  
Author(s):  
Kazuya Ishikawa ◽  
Teppei Kitahara ◽  
Masahiro Takimoto
Keyword(s):  

2019 ◽  
Vol 2019 (10) ◽  
Author(s):  
Basabendu Barman ◽  
Debasish Borah ◽  
Purusottam Ghosh ◽  
Abhijit Kumar Saha

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