Article
Astronomy & Astrophysics
Grigoris Panotopoulos, Ilidio Lopes
Summary: This model utilizes two scalar fields to simulate dark matter and dark energy in the universe, successfully explaining the current cosmic acceleration. A negative coupling constant leads to two distinct features of the model: a transient acceleration phase and a collapsing Universe.
Article
Astronomy & Astrophysics
Yu Cheng, Wei Liao
Summary: Light dark matter with right relic density can be produced by the decay of other dark sector particles. The dark matter candidate is generated by the decay of a heavier dark sector singlet scalar, and its mass can be at the GeV or MeV scale with very weak interactions. The dark sector singlet scalar can have a mass at the GeV-TeV scale and interacts weakly with Standard Model particles.
Article
Astronomy & Astrophysics
Joao G. Rosa, Duarte M. C. Silva
Summary: This article proposes a scenario that explains the comparable abundances of dark matter and baryons without requiring coincidence in particle masses. The scenario suggests that dark matter corresponds to heavy dark baryons in a hidden sector, and the asymmetry in baryon production compensates for the differences in mass to give similar densities in both sectors. The scenario also predicts uncorrelated fluctuations in dark matter and baryon densities.
Review
Multidisciplinary Sciences
Kimmo Tuominen
Summary: Possible dark matter candidates in particle physics span over fifty orders of magnitude in mass range. This review discusses models where dark matter arises as weakly coupled elementary fields and models where dark matter is a composite state bound by a new strong interaction. Different production mechanisms for dark matter and constraints on models from direct and indirect searches are briefly discussed.
Article
Physics, Particles & Fields
Shuai Xu, Sibo Zheng
Summary: A decaying cold dark matter model is proposed to explain the excess of electron recoil observed at the XENON1T experiment. The model suggests that daughter dark matter from parent dark matter decay can saturate the peak of electron recoil energy. The proposed model is consistent with experimental limits from dark matter detections, Cosmic microwave background, and large scale structure experiments.
EUROPEAN PHYSICAL JOURNAL C
(2021)
Article
Astronomy & Astrophysics
Tomohiro Abe, K. S. Babu
Summary: The proposed theory involves a model of chiral fermion dark matter with an isospin-3/2 fennion under a dark sector SU(2)(D) gauge symmetry, allowing for the realization of a two-component DM scenario and the study of single-component fermionic DM. Constraints on the DM mass are derived based on internal consistency, perturbativity arguments, and observed relic abundance, with potential testing opportunities in DM direct-detection signals at the LZ and XENONnT experiments for a significant part of the parameter space.
Article
Physics, Multidisciplinary
Yu-Dai Tsai, Robert McGehee, Hitoshi Murayama
Summary: This paper presents new models based on QCD-like dark sectors to solve small-scale structure problems. By drawing analogies to the meson spectra in standard model QCD, the models introduce resonant self-interacting dark matter and discuss experimental probes for both setups. The paper also comments on the resonant self-interactions already built into SIMP and ELDER mechanisms.
PHYSICAL REVIEW LETTERS
(2022)
Article
Astronomy & Astrophysics
Abraham Loeb
Summary: There has been a recent resurgence of interest in restricting the interaction between dark matter particles and known particles. The author proposes a novel approach to set upper limits on the coupling of ions or electrons to dark matter particles of any mass, using Faraday's Law in a spinning conductor.
Article
Physics, Nuclear
Yu Cheng, Wei Liao, Qi-Shu Yan
Summary: This study explores the possibility that the dark matter relic density is not directly produced by a thermal mechanism, but by the decay of other heavier dark-sector particles. Using a concrete model, the collider signature of the dark sector particles associated with Higgs production processes is studied, and it is found that future lepton colliders could be a better place to probe the signature of this kind of light dark matter model than hadron colliders such as LHC. Furthermore, it is found that a Higgs factory with a center-of-mass energy of 250 GeV has a better potential to resolve the signature of this kind of light dark matter model than a Higgs factory with a center-of-mass energy of 350 GeV.
Article
Astronomy & Astrophysics
Raphael Errani, Julio F. Navarro
Summary: Using N-body simulations, we studied the evolution of cuspy cold dark matter haloes in the gravitational potential of a massive host. Tidal mass-losses reshape the haloes, leaving behind bound remnants. The density profile of tidal remnants is determined by the fraction of mass lost, and can approach an exponentially truncated Navarro-Frenk-White profile with heavy mass-loss.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2021)
Article
Astronomy & Astrophysics
Suresh Chand, Mariana Frank, Poulose Poulose
Summary: In this study, leptogenesis is analyzed in the context of a simple extension of the Standard Model. By introducing two fermions and interacting with three right-handed neutrinos through a charged gauge singlet scalar S, the observed baryon asymmetry of the Universe can be naturally generated.
Article
Physics, Multidisciplinary
G. A. Kozlov
Summary: The study investigates the solutions for dark matter and dark photons as observables, highlighting the influence of dark photons on dark matter observables. It discusses the phenomenology of dark photons physics and the registration of dark photons.
EUROPEAN PHYSICAL JOURNAL PLUS
(2021)
Article
Physics, Particles & Fields
Elias Koorambas
Summary: Researchers have proposed a new extension of the Electro Weak theory to explain the existence of dark matter, introducing a massive tensor gauge boson. They have calculated the self-annihilation cross-section and relic abundance of the dark matter associated with this boson, as well as studied the scattering of Standard Model particles due to its exchange at high energy scales.
EUROPEAN PHYSICAL JOURNAL C
(2023)
Article
Physics, Multidisciplinary
Ivo Schulthess, Estelle Chanel, Anastasio Fratangelo, Alexander Gottstein, Andreas Gsponer, Zachary Hodge, Ciro Pistillo, Dieter Ries, Torsten Soldner, Jacob Thorne, Florian M. Piegsa
Summary: We conducted a search for dark matter axionlike particles using a Ramsey-type apparatus for cold neutrons. No significant oscillating signal was found, allowing us to constrain the coupling of ALPs to gluons in the mass range studied.
PHYSICAL REVIEW LETTERS
(2022)
Article
Astronomy & Astrophysics
Rachik Soualah, Amine Ahriche
Summary: In this paper, the mutual impact between the dark matter requirements and the scalar sector in the scale invariant scotogenic model is investigated. It is shown that the existence of annihilation channels mediated by the Higgs/dilaton can relax the constraints on the dark matter relic density. Furthermore, the new Yukawa interactions can take small values, avoiding mass degeneracy between the CP-even and CP-odd inert scalars. Unlike other models, in the scale invariant scotogenic model, the dark matter couples to the quarks at tree level.
Article
Physics, Particles & Fields
A. V. Nikolaev, S. V. Chervon
EUROPEAN PHYSICAL JOURNAL C
(2015)
Article
Physics, Multidisciplinary
S. V. Chervon, R. R. Abbyazov, S. V. Kryukov
RUSSIAN PHYSICS JOURNAL
(2015)
Article
Astronomy & Astrophysics
A. V. Nikolaev, S. V. Chervon
GRAVITATION & COSMOLOGY
(2016)
Article
Physics, Nuclear
Aleksei Nikolaev, Sergey Chervon
INTERNATIONAL JOURNAL OF MODERN PHYSICS A
(2016)
Article
Astronomy & Astrophysics
S. D. Maharaj, A. Beesham, S. V. Chervon, A. S. Kubasov
GRAVITATION & COSMOLOGY
(2017)
Article
Astronomy & Astrophysics
I. V. Fomin, S. V. Chervon
GRAVITATION & COSMOLOGY
(2017)
Article
Astronomy & Astrophysics
S. D. Maharaj, R. Goswami, S. V. Chervon, A. V. Nikolaev
MODERN PHYSICS LETTERS A
(2017)
Article
Astronomy & Astrophysics
I. V. Fomin, S. V. Chervon
MODERN PHYSICS LETTERS A
(2017)
Article
Physics, Multidisciplinary
I. V. Fomin, S. V. Chervon
RUSSIAN PHYSICS JOURNAL
(2017)
Article
Physics, Particles & Fields
Sergey V. Chervon, Igor V. Fomin, Aroonkumar Beesham
EUROPEAN PHYSICAL JOURNAL C
(2018)
Article
Astronomy & Astrophysics
I. Fomin, S. Chervon
MODERN PHYSICS LETTERS A
(2018)
Article
Physics, Particles & Fields
I. V. Fomin, S. V. Chervon
EUROPEAN PHYSICAL JOURNAL C
(2018)
Article
Physics, Mathematical
I. Fomin, S. Chervon, S. D. Maharaj
INTERNATIONAL JOURNAL OF GEOMETRIC METHODS IN MODERN PHYSICS
(2019)
Article
Physics, Particles & Fields
S. Chervon, A. Nikolaev, T. Mayorova, S. D. Odintsov, V. K. Oikonomou
Article
Astronomy & Astrophysics
I. Fomin, S. Chervon
