Particle Physics Approach to Dark Matter

Lazarides, George

doi:10.1007/978-3-540-71013-4_1

Cited by 10 publications

(2 citation statements)

References 144 publications

(184 reference statements)

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“…Let us emphasize, however, that soft SUSY breaking effects break U(1) R explicitly to a discrete subgroup. Usually, the combination of the latter with the Z f 2 fermion parity yields [67,68] the well-known R-parity of MSSM, which guarantees the stability of the lightest SUSY particle and, therefore, provides a well-motivated cold dark matter candidate.…”

Section: Jhep11(2015)114mentioning

confidence: 99%

Shift symmetry and Higgs inflation in supergravity with observable gravitational waves

Lazarides¹,

Pallis²

2015

J. High Energ. Phys.

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Abstract:We demonstrate how to realize within supergravity a novel chaotic-type inflationary scenario driven by the radial parts of a conjugate pair of Higgs superfields causing the spontaneous breaking of a grand unified gauge symmetry at a scale assuming the value of the supersymmetric grand unification scale. The superpotential is uniquely determined at the renormalizable level by the gauge symmetry and a continuous R symmetry. We select two types of Kähler potentials, which respect these symmetries as well as an approximate shift symmetry. In particular, they include in a logarithm a dominant shift-symmetric term proportional to a parameter c − together with a small term violating this symmetry and characterized by a parameter c + . In both cases, imposing a lower bound on c − , inflation can be attained with subplanckian values of the original inflaton, while the corresponding effective theory respects perturbative unitarity for r ± = c + /c − ≤ 1. These inflationary models do not lead to overproduction of cosmic defects, are largely independent of the one-loop radiative corrections and accommodate, for natural values of r ± , observable gravitational waves consistently with all the current observational data. The inflaton mass is mostly confined in the range (3.7 − 8.1) × 10 10 GeV.

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Section: Jhep11(2015)114mentioning

confidence: 99%

Shift symmetry and Higgs inflation in supergravity with observable gravitational waves

Lazarides¹,

Pallis²

2015

J. High Energ. Phys.

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“…Therefore we discuss in this section some of the main properties that must characterize the identity of any possible dark matter candidate. The ideas in this section were discussed in [123][124][125].…”

Section: Basic Properties Of Dark Mattermentioning

confidence: 99%

Phenomenological Aspects of Axion-Like Particles in Cosmology and Astrophysics

Ayad¹

2022

Preprint

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The Theory of Local Mass Dimension One Fermions of Spin One Half

Ahluwalia

2017

Adv. Appl. Clifford Algebras

173

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Abstract. About a decade ago the present author in collaboration with Daniel Grumiller presented an 'unexpected theoretical discovery' of spin one-half fermions with mass dimension one [1,2]. In the decade that followed a significant number of groups explored intriguing mathematical and physical properties of the new construct. However, the formalism suffered from two troubling features, that of non-locality and a subtle violation of Lorentz symmetry. Here, we trace the origin of both of these issues to a hidden freedom in the definition of duals of spinors and the associated field adjoints. In the process, for the first time, we provide a quantum theory of spin one-half fermions that is free from all the mentioned issues. The interactions of the new fermions are restricted to dimension-four quartic self interaction, and also to a dimensionfour coupling with the Higgs. A generalised Yukawa coupling of the new fermions with neutrinos provides an hitherto unsuspected source of lepton-number violation. The new fermions thus present a first-principle dark matter partner to Dirac fermions of the standard model of high energy physics with contrasting mass dimensions -that of three halves for the latter versus one of the former without mutating the statistics from fermionic to bosonic.

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Particle Physics Approach to Dark Matter

Cited by 10 publications

References 144 publications

Shift symmetry and Higgs inflation in supergravity with observable gravitational waves

Shift symmetry and Higgs inflation in supergravity with observable gravitational waves

Phenomenological Aspects of Axion-Like Particles in Cosmology and Astrophysics

The Theory of Local Mass Dimension One Fermions of Spin One Half

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