Article
Astronomy & Astrophysics
Nikita Blinov, Gordan Krnjaic, Douglas Tuckler
Summary: Fixed target missing-momentum experiments like LDMX and M-3 are powerful tools for probing light dark matter and other weakly coupled particles beyond the Standard Model. By measuring kinematic variables and experimental parameters such as beam energy and polarization, these experiments can potentially discriminate between models and study the properties of radiated particles. In particular, variations in beam energy, polarization, and lepton flavor can be utilized to disentangle the Lorentz structure of new interactions.
Article
Astronomy & Astrophysics
Hooman Davoudiasl, Peter B. Denton, David A. McGady
Summary: The conventional lore excludes fermionic dark matter with mass lighter than a few hundred electronvolts based on the Pauli exclusion principle. A new method is proposed in this paper which involves numerous quasi-degenerate species of fermions without couplings to the standard model to evade this bound. Gravitational interactions impose constraints from measurements at the LHC, cosmic rays, supernovae, and black hole spins and lifetimes, with a particular limit on the number of distinct species of particles being less than or around 10^62.
Article
Astronomy & Astrophysics
A. Arbey, J-F Coupechoux
Summary: This paper explores the possibility of a scalar field replacing dark matter, dark energy, and inflation by introducing a non-minimal coupling to gravity, a Mexican hat potential, and spontaneous symmetry breaking. The scalar field behaves like a dark fluid after inflation, mimicking the properties of both dark energy and dark matter.
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
(2021)
Article
Physics, Multidisciplinary
Yohei Ema, Filippo Sala, Ryosuke Sato
Summary: The study establishes new strong limits on interactions of sub-GeV Dark Matter with nuclei using data from cosmic-ray upscatterings, and demonstrates that their proposal tests genuinely new parameter space. This motivates and shapes a new physics case for large volume detectors sensitive to nuclear recoils.
Article
Astronomy & Astrophysics
Anja Brenner, Gonzalo Herrera, Alejandro Ibarra, Sunghyun Kang, Stefano Scopel, Gaurav Tomar
Summary: This study presents a method to determine an upper limit on the dark matter-nucleon interaction strength, taking into account all possible interferences among operators. The method is illustrated using the null search results from XENON1T, PICO-60, and IceCube, and it also introduces a way to combine results from different experiments to explore the parameter space of dark matter-nucleon interactions more comprehensively.
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
(2022)
Article
Astronomy & Astrophysics
David Figueruelo, Miguel Aparicio Resco, Florencia A. Teppa Pannia, Jose Beltran Jimenez, Dario Bettoni, Antonio L. Maroto, L. Raul Abramo, Jailson Alcaniz, Narciso Benitez, Silvia Bonoli, Saulo Carneiro, Javier Cenarro, David Cristobal-Hornillos, Renato A. Dupke, Alessandro Ederoclite, Carlos Lopez-Sanjuan, Antonio Marin-Franch, Valerio Marra, Claudia Mendes de Oliveira, Mariano Moles, Laerte Sodre, Keith Taylor, Jesus Varela, Hector Vazquez Ramio
Summary: The study examines a cosmological model with coupling between dark matter and dark energy, and finds through fitting and forecasting that a coupling is more suitable than an uncoupled scenario in cosmology, primarily driven by cluster counts.
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
(2021)
Article
Astronomy & Astrophysics
Andrea Maccio, Daniel Huterer Prats, Keri L. Dixon, Tobias Buck, Stefan Waterval, Nikhil Arora, Stephane Courteau, Xi Kang
Summary: Through simulations, it has been shown that dwarf galaxies can lose up to 80% of their dark matter content and see a significant change in the dark matter-to-stellar mass ratio after interactions with central galaxies. These findings align with observations of NGC 1052-DF2 and NGC 1054-DF4.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2021)
Article
Astronomy & Astrophysics
Guillem Domenech, Samuel Passaglia, Sebastien Renaux-Petel
Summary: This study derives the analytical framework to compute the stochastic gravitational wave background induced by small-scale primordial cold dark matter isocurvature fluctuations. It is found that large isocurvature fluctuations can produce observable gravitational wave signals, with a spectrum distinct from adiabatic perturbations. Future gravitational wave detectors are expected to significantly improve constraints on small-scale dark matter isocurvature.
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
(2022)
Article
Astronomy & Astrophysics
Riccardo Catena, Taylor R. Gray
Summary: This study extends the current framework for dark matter search to include spin-1 dark matter models. The study explores simplified models and a non-abelian gauge group-based model, calculating various properties of these models and comparing them with experimental results. The study finds that the simplified models are strongly constrained by current experiments and the unitarity bound, while the vector SIMP model is compatible with current observations in a wide region of the parameter space.
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
(2023)
Article
Astronomy & Astrophysics
Alvaro de la Cruz Dombriz, Francisco Jose Maldonado Torralba, David F. Mota
Summary: The stable pseudo-scalar degree of freedom in the quadratic Poincare Gauge theory of gravity is identified as a suitable candidate for dark matter. The study determines the parameter space in the theory that can explain all predicted cold dark matter phenomena and constrains these parameters with astrophysical observations.
Article
Astronomy & Astrophysics
Emil Brinch Holm, Thomas Tram, Steen Hannestad
Summary: Decaying dark matter models can impact the predicted value of the Hubble constant and bridge the discrepancies between CMB inferences and local measurements. In this study, a reevaluation of the warm dark matter decaying model is performed, including the mass of the decaying species, and its ability to alleviate tensions in Hubble and sigma(8) is assessed. The model shows mild improvements but further research is required to fully evaluate its effectiveness.
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
(2022)
Article
Astronomy & Astrophysics
Vicente Delgado, Antonio Munoz Mateo
Summary: This study assumes dark matter to be a cosmological self-gravitating Bose-Einstein condensate comprised of non-relativistic ultralight scalar particles with competing gravitational and repulsive contact interactions. It explores the observational implications of this model and finds that dark matter structures can form stable self-bound structures exhibiting a universal mass profile and rotation curve.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2022)
Article
Astronomy & Astrophysics
Mar Bastero-Gil, Jose Santiago, Roberto Vega-Morales, Lorenzo Ubaldi
Summary: We study a mechanism for producing dark photon dark matter at the end of inflation. The rolling inflaton induces a tachyonic instability, leading to the coherent production of dark gauge bosons. We examine the case where the dark photons are relativistic when their mass is generated and calculate the relic abundance today. Furthermore, we analyze the late time power spectrum and find that it preserves the peak generated at the end of inflation.
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
(2022)
Article
Astronomy & Astrophysics
Mona Dentler, David J. E. Marsh, Renee Hlozek, Alex Lague, Keir K. Rogers, Daniel Grin
Summary: Gravitational weak lensing by dark matter haloes leaves a measurable imprint in galaxy shear correlation function. Fuzzy dark matter (FDM), composed of ultralight axion-like particles, suppresses matter power spectrum and shear correlation. Our analysis sets a new lower limit to FDM particle mass, improving the mass bound by almost two orders of magnitude compared to previous constraints.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2022)
Article
Physics, Particles & Fields
Gerrit Bickendorf, Manuel Drees
Summary: We investigate the effects of leptophilic dark matter interactions on muon decays and ground state meson decays in current experiments. The study focuses on a secluded dark sector that exclusively interacts with leptons through a scalar or vector mediator. The results show that these interactions can significantly affect leptonic decays and deform energy spectra. The Michel decay of muons is analyzed to constrain the parameter space. The decays of rare mesons, such as pi(+/-), K-+/-, D-+/-, and D-s(+/-), to ev are also considered. Strong constraints can be derived for scalar mediators as they remove the helicity suppression in the Standard Model. The constraints on the couplings of light mediators to electrons and muons are found to be weaker than those from experiments at low-energy e(+)e(-) colliders and the muon magnetic moment. Additionally, it is shown that kaon and pion decays exclude a scenario with a scalar dark matter particle having a dimension-5 coupling to electrons.
EUROPEAN PHYSICAL JOURNAL C
(2022)