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The particle that makes up the dark matter of the universe could be an axion or axion-like particle. A collection of axions can condense into a bound Bose-Einstein condensate called an axion star. It is possible that a significant fraction…

High Energy Physics - Phenomenology · Physics 2018-10-30 Eric Braaten , Hong Zhang

The lack of confirmation for the existence of supersymmetric particles and Weakly Interacting Massive Particles (WIMPs) appeals to extension of the field of studies of the physical nature of dark matter, involving non-supersymmetric and…

High Energy Physics - Phenomenology · Physics 2020-01-08 Maxim Khlopov

The distribution of the non-luminous matter in galaxies of different luminosity and Hubble type is much more than a proof of the existence of dark particles governing the structures of the Universe. Here, we will review the complex but…

Astrophysics of Galaxies · Physics 2019-02-25 Paolo Salucci

Particle physics candidates for cosmological dark matter are usually considered as neutral and weakly interacting. However stable charged leptons and quarks can also exist and, hidden in elusive atoms, play the role of dark matter. The…

Astrophysics · Physics 2008-01-03 M. Yu. Khlopov

We examine the cosmological and astrophysical signatures of a "dark baryon," a neutral fermion that mixes with the neutron. As the mixing is through a higher-dimensional operator at the quark level, production of the dark baryon at high…

High Energy Physics - Phenomenology · Physics 2021-06-09 David McKeen , Maxim Pospelov , Nirmal Raj

Cosmological implications of neutrinos are reviewed. The following subjects are discussed at a different level of scrutiny: cosmological limits on neutrino mass, neutrinos and primordial nucleosynthesis, cosmological constraints on unstable…

High Energy Physics - Phenomenology · Physics 2009-11-07 A. D. Dolgov

In this astro-particle lecture course I shall try to emphasize evidence of the new physics which we have in cosmological and astrophysical data. This includes support of the inflationary model, necessity of dark energy and of non-baryonic…

High Energy Physics - Phenomenology · Physics 2007-05-23 I. I. Tkachev

The origin of neutrino masses and the nature of dark matter are two of the most pressing open questions of the modern astro-particle physics. We consider here the possibility that these two problems are related, and review some theoretical…

High Energy Physics - Phenomenology · Physics 2015-01-20 Massimiliano Lattanzi , Roberto A. Lineros , Marco Taoso

The connection of Dark Matter to our particle physics model is still one of the open cosmological questions. In these proceedings I will argue that axinos can be successful Cold Dark Matter candidates in models with Supersymmetry and the…

High Energy Physics - Phenomenology · Physics 2009-11-11 Laura Covi

The axion arises in well-motivated extensions of the Standard Model of particle physics and is regarded as an alternative to the weakly interacting massive particle paradigm to explain the nature of dark matter. In this contribution, we…

High Energy Physics - Phenomenology · Physics 2018-01-30 Ken'ichi Saikawa

The dark atoms $XHe$ are the composite Thomson like atomic dark matter candidates. We address two cosmological problems of this model. The excess of new superheavy particles with even negative charge $X^{-2n}$ over the corresponding…

High Energy Physics - Phenomenology · Physics 2024-10-18 V. A. Beylin , M. Yu. Khlopov , D. O. Sopin

Low-mass particles such as neutrinos, axions, other Nambu-Goldstone bosons and gravitons are produced in the hot and dense interior of stars. Therefore, astrophysical arguments constrain the properties of these particles in ways which are…

High Energy Physics - Phenomenology · Physics 2008-11-26 G. Raffelt

Recent developments of those areas of astro-particle physics are discussed that were represented at the HEP97 conference. In particular, the current status of direct and indirect dark-matter searches and of TeV neutrino and gamma-ray…

High Energy Physics - Phenomenology · Physics 2007-05-23 G. G. Raffelt

Current problems in particle physics are reviewed from the viewpoint of theories possessing extra spatial dimensions.

High Energy Physics - Phenomenology · Physics 2011-09-13 Ferruccio Feruglio

COSMOPARTICLE PHYSICS is the specific crossdisciplinary field of science, studying foundations of particle physics and cosmology in the combination of indirect cosmological, astrophysical and physical signatures of their fundamental…

High Energy Physics - Phenomenology · Physics 2008-11-26 M. Yu. Khlopov , A. S. Sakharov , A. L. Sudarikov

In recent years, unprecedented progress in observational cosmology has revealed a great deal of information about the formation and evolution of structures in the universe. This, in turn, has raised many challenging issues for the…

Astrophysics · Physics 2010-12-09 T. Roy Choudhury

We review the main proposals of particle physics for the composition of the cold dark matter in the universe. Strong axion contribution to cold dark matter is not favored if the Peccei-Quinn field emerges with non-zero value at the end of…

High Energy Physics - Phenomenology · Physics 2011-01-27 George Lazarides

We review theoretically well-motivated dark-matter candidates, and pathways to their discovery, in the light of recent results from collider physics, astrophysics, and cosmology. Taken in aggregate, these encourage broader thinking in…

High Energy Physics - Phenomenology · Physics 2015-06-15 Susan Gardner , George Fuller

Neutrino astronomy is on the verge of discovering new sources, and this will lead to important advances in astrophysics, cosmology, particle physics, and nuclear physics. This paper is meant for non-experts, so that they might better…

Astrophysics · Physics 2007-06-14 John F. Beacom

We investigate the detectability of axino-like particle, which is defined as a supersymmetric partner of axion-like particle and can be a good candidate for dark matter in our Universe. Especially, we consider the fixed target experiments…

High Energy Physics - Phenomenology · Physics 2020-01-22 Ki-Young Choi , Takeo Inami , Kenji Kadota , Inwoo Park , Osamu Seto