scholarly journals Long lived superheavy dark matter with discrete gauge symmetries

1999 ◽  
Vol 59 (6) ◽  
Author(s):  
K. Hamaguchi ◽  
Yasunori Nomura ◽  
T. Yanagida
Keyword(s):  
Dark Matter ◽  
Gauge Symmetries ◽  
Superheavy Dark Matter

scholarly journals Superheavy dark matter with discrete gauge symmetries

1998 ◽  
Vol 58 (10) ◽  
Author(s):  
K. Hamaguchi ◽  
Yasunori Nomura ◽  
T. Yanagida
Keyword(s):  
Dark Matter ◽  
Gauge Symmetries ◽  
Superheavy Dark Matter

scholarly journals Superheavy dark matter and parametric resonance

1999 ◽  
Vol 449 (3-4) ◽  
pp. 230-236 ◽  
Author(s):  
Masato Arai ◽  
Hideaki Hiro-Oka ◽  
Nobuchika Okada ◽  
Shin Sasaki
Keyword(s):  
Dark Matter ◽  
Parametric Resonance ◽  
Superheavy Dark Matter

scholarly journals Superheavy dark matter in $$R+R^2$$ cosmology with conformal anomaly

2020 ◽  
Vol 80 (11) ◽  
Author(s):  
E. V. Arbuzova ◽  
A. D. Dolgov ◽  
R. S. Singh
Keyword(s):  
Dark Matter ◽  
Coupling Strength ◽  
Modified Gravity ◽  
Particle Creation ◽  
Cosmological Evolution ◽  
Particle Mass ◽  
Conformal Anomaly ◽  
Gauge Bosons ◽  
Superheavy Dark Matter

AbstractCosmological evolution and particle creation in $$R^2$$ R 2 -modified gravity are considered for the case of the dominant decay of the scalaron into a pair of gauge bosons due to conformal anomaly. It is shown that in the process of thermalization superheavy dark matter with the coupling strength typical for the GUT SUSY can be created. Such dark matter would have the proper cosmological density if the particle mass is close to $$10^{12}$$ 10 12 GeV.

scholarly journals Isocurvature constraints on gravitationally produced superheavy dark matter

2005 ◽  
Vol 72 (2) ◽  
Author(s):  
Daniel J. H. Chung ◽  
Edward W. Kolb ◽  
Antonio Riotto ◽  
Leonardo Senatore
Keyword(s):  
Dark Matter ◽  
Superheavy Dark Matter

scholarly journals Symmergent Gravity, Seesawic New Physics, and Their Experimental Signatures

2019 ◽  
Vol 2019 ◽  
pp. 1-15 ◽  
Author(s):  
Durmuş Demir
Keyword(s):  
Dark Matter ◽  
Gamma Rays ◽  
Planck Scale ◽  
New Physics ◽  
Fine Tuning ◽  
Dark Matter Candidate ◽  
Uv Sensitivity ◽  
Gauge Symmetries ◽  
The Standard Model ◽  
Zero Coupling

The standard model of elementary particles (SM) suffers from various problems, such as power-law ultraviolet (UV) sensitivity, exclusion of general relativity (GR), and absence of a dark matter candidate. The LHC experiments, according to which the TeV domain appears to be empty of new particles, started sidelining TeV-scale SUSY and other known cures of the UV sensitivity. In search for a remedy, in this work, it is revealed that affine curvature can emerge in a way restoring gauge symmetries explicitly broken by the UV cutoff. This emergent curvature cures the UV sensitivity and incorporates GR as symmetry-restoring emergent gravity (symmergent gravity, in brief) if a new physics sector (NP) exists to generate the Planck scale and if SM+NP is Fermi-Bose balanced. This setup, carrying fingerprints of trans-Planckian SUSY, predicts that gravity is Einstein (no higher-curvature terms), cosmic/gamma rays can originate from heavy NP scalars, and the UV cutoff might take right value to suppress the cosmological constant (alleviating fine-tuning with SUSY). The NP does not have to couple to the SM. In fact, NP-SM coupling can take any value from zero to ΛSM2/ΛNP2 if the SM is not to jump from ΛSM≈500  GeV to the NP scale ΛNP. The zero coupling, certifying an undetectable NP, agrees with all the collider and dark matter bounds at present. The seesawic bound ΛSM2/ΛNP2, directly verifiable at colliders, implies that (i) dark matter must have a mass ≲ΛSM, (ii) Higgs-curvature coupling must be ≈1.3%, (iii) the SM RGEs must remain nearly as in the SM, and (iv) right-handed neutrinos must have a mass ≲1000  TeV. These signatures serve as a concise testbed for symmergence.

scholarly journals Hunting for superheavy dark matter with the highest-energy cosmic rays

2019 ◽  
Vol 99 (10) ◽  
Author(s):  
Esteban Alcantara ◽  
Luis A. Anchordoqui ◽  
Jorge F. Soriano
Keyword(s):  
Dark Matter ◽  
Cosmic Rays ◽  
Superheavy Dark Matter
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