Neutralino constraints on the flipped SU (5) model

Abel, Steven; Cottingham, W. N.; Whittingham, I. B.

doi:10.1016/0370-2693(90)90079-l

Cited by 3 publications

(1 citation statement)

References 19 publications

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“…Working within such a specific framework enables -indeed, requires -us to address a wide range of related issues. For example, in connection with particle physics, one must check consistency with the available information on neutrino masses and mixing [4][5][6][7][8][9][10][29][30][31][32], proton stability [33][34][35][36][37] and provide for the cold dark matter of the Universe [38][39][40][41]. Also, in connection with cosmology, one must check the evolution in the early Universe of the various scalar fields that necessarily appear in any more complete model of inflation [42,43].…”

Section: Jcap07(2017)006mentioning

confidence: 99%

Starobinsky-like inflation, supercosmology and neutrino masses in no-scale flipped SU(5)

Ellis

García

Nanopoulos

et al. 2017

J. Cosmol. Astropart. Phys.

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We embed a flipped SU(5) × U(1) GUT model in a no-scale supergravity framework, and discuss its predictions for cosmic microwave background observables, which are similar to those of the Starobinsky model of inflation. Measurements of the tilt in the spectrum of scalar perturbations in the cosmic microwave background, n s , constrain significantly the model parameters. We also discuss the model's predictions for neutrino masses, and pay particular attention to the behaviours of scalar fields during and after inflation, reheating and the GUT phase transition. We argue in favor of strong reheating in order to avoid excessive entropy production which could dilute the generated baryon asymmetry.

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Section: Jcap07(2017)006mentioning

confidence: 99%

Starobinsky-like inflation, supercosmology and neutrino masses in no-scale flipped SU(5)

Ellis

García

Nanopoulos

et al. 2017

J. Cosmol. Astropart. Phys.

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The muon magnetic moment in flipped SU(5)

1991

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Neutralino dark matter in a class of unified theories

1993

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The cosmological significance of the neutralino sector is studied for a class of supersymmetric grand unified theories in which electroweak symmetry breaking is seeded by a gauge singlet. Extensive use is made of the renormalization group equations to significantly reduce the parameter space, by deriving analytic expressions for all the supersymmetry-breaking couplings in terms of the universal gaugino mass m 1/2 , the universal scalar mass m 0 and the coupling A. The composition of the lightest supersymmetric partner is determined exactly below the W mass, no approximations are made for sfermion masses, and all particle exchanges are considered in calculating the annihilation cross-section; the relic abundance is then obtained by an analytic approximation. We find that in these models, stable neutralinos may make a significant contribution to the dark matter in the universe.

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Neutralino constraints on the flipped SU (5) model

Cited by 3 publications

References 19 publications

Starobinsky-like inflation, supercosmology and neutrino masses in no-scale flipped SU(5)

Starobinsky-like inflation, supercosmology and neutrino masses in no-scale flipped SU(5)

The muon magnetic moment in flipped SU(5)

Neutralino dark matter in a class of unified theories

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