Article
Astronomy & Astrophysics
Guillermo Ballesteros, Marcos A. G. Garcia, Mathias Pierre
Summary: This study investigates the power spectrum of Non-Cold Dark Matter produced in a state out of thermal equilibrium, considering various sources of dark matter production. A mapping procedure is proposed to translate the WDM Lyman-alpha mass bound to NCDM scenarios, providing bounds on several NCDM possibilities. The results have implications for specific examples of dark matter scenarios.
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
(2021)
Article
Astronomy & Astrophysics
Mohammad Ali Gorji
Summary: This paper discusses how the seed of dark matter is generated from light spectator fields during inflation and explains how the energy density of these excited modes dominates the universe's energy density during the time of matter and radiation equality, playing the role of dark matter.
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
(2023)
Article
Astronomy & Astrophysics
Cem Eroncel, Geraldine Servant
Summary: We demonstrate the formation of very compact axion mini-clusters through the kinetic misalignment mechanism in axion-like-particle (ALP) dark matter models. These mini-clusters are denser than those formed through standard misalignment or large misalignment scenarios. Our analysis shows that adiabatic fluctuations play a significant role in the amplification of ALP fluctuations in the early universe, leading to larger final sizes in the kinetic misalignment mechanism. We compare the halo mass functions and spectra obtained from different misalignment scenarios and present the results in terms of the ALP mass and decay constant.
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
(2023)
Article
Astronomy & Astrophysics
Lea Fuss, Mathias Garny
Summary: Investigated the impact of the Decaying Cold Dark Matter (DCDM) model on the tension between cosmic microwave background (CMB) and large-scale structure measurements. Found that the Lyman-alpha forest data is compatible with the DCDM model and can provide improved constraints under certain parameter values.
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
(2023)
Article
Astronomy & Astrophysics
Mar Bastero-Gil, Antonio Torres Manso
Summary: We present a supersymmetric extension of a unified model for inflation and Dark Matter, which is based on the incomplete decay of the inflaton field into right-handed neutrino pairs. By imposing a discrete interchange symmetry on the inflaton and right-handed neutrinos, stability of the inflaton field at the global minimum is ensured, while still allowing partial decay and reheating of the Universe. Compatibility with inflationary predictions, BBN bounds, and obtaining the right DM abundance typically requires large couplings to the neutrino sector.
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
(2021)
Article
Astronomy & Astrophysics
Logan Morrison, Stefano Profumo, Dean J. Robinson
Summary: The study discusses a dark QCD sector as a minimal extension of the Standard Model, which includes Dark Matter candidates without the need for additional interactions with the visible sector. Under specific conditions, this dark sector can generate Dark Matter candidates.
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
(2021)
Article
Astronomy & Astrophysics
Yann Mambrini, Keith A. Olive, Jiaming Zheng
Summary: Dark matter may only interact with the visible sector at high energy scales. During the period of reheating, the dominant process of dark matter production is through the decay products of the inflaton. This process dominates for low reheating temperatures and can produce the required density of dark matter.
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
(2022)
Article
Astronomy & Astrophysics
Wasif Husain, Anthony W. Thomas
Summary: This study examines neutron star models with dark matter in the core, investigating properties of different types of dark matter particles and their interactions. Constraints on mass, radius, and tidal deformability are considered, along with the distribution of energy density inside the stars. The presence and behavior of fermionic dark matter throughout the star is particularly noted.
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
(2021)
Article
Astronomy & Astrophysics
Deanna C. Hooper, Nils Schoneberg, Riccardo Murgia, Maria Archidiacono, Julien Lesgourgues, Matteo Viel
Summary: In this study, the researchers extend a method for using Lyman-alpha data to constrain the suppression of power spectrum caused by a mixture of cold and non-standard dark matter. The results show that Lyman-alpha data can effectively constrain the models suppressing the power spectrum and provide new insights into the parameter space.
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
(2022)
Article
Astronomy & Astrophysics
Seyong Kim, M. Laine
Summary: Recently, there have been questions regarding how kinetic equilibrium is maintained when freeze-out dynamics is pushed to low temperatures in the context of the scalar singlet dark matter model with a mass of 60 GeV. Langevin simulations are used to address the non-equilibrium momentum distribution of non-relativistic particles in a cosmological background. These simulations suggest that kinetic equilibrium is a good approximation down to temperatures around 1 GeV for scalar singlet masses below 60 GeV, with deviations appearing as a red-tilted spectrum. This confirms that a slightly larger coupling than in equilibrium is needed to obtain the correct abundance, reducing the annihilation cross section.
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
(2023)
Article
Astronomy & Astrophysics
Takanori Sato, Fuminobu Takahashi, Masaki Yamada
Summary: This paper investigates the gravitational production of dark photon dark matter during inflation when dark photons acquire mass through the Higgs mechanism. The research reveals that the energy density spectrum of dark photons can have two peaks at intermediate and small scales. Dark photons can explain dark matter, but their current mass needs to fall within a specific range.
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
(2022)
Article
Astronomy & Astrophysics
Simone Biondini, Philipp Schicho, Tuomas V. I. Tenkanen
Summary: Beyond the Standard Model physics needs to explain both dark matter and the baryon asymmetry of the universe. We study a next-to-minimal dark matter model containing an inert Majorana fermion and Standard Model leptons, and link the phase transition thermodynamics with the dark matter energy density to determine the parameter space that can explain the observed dark matter energy density and allow for a first-order phase transition.
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
(2022)
Article
Astronomy & Astrophysics
Luca Di Luzio, Belen Gavela, Pablo Quilez, Andreas Ringwald
Summary: This study suggests that dark matter can be explained by an axion that solves the strong CP problem, with a wide range of mass values. A novel misalignment mechanism known as trapped misalignment occurs, due to the unique temperature dependence of the Z(N) axion potential. Trapped misalignment is more general and may dynamically source the recently proposed kinetic misalignment mechanism.
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
(2021)
Article
Physics, Particles & Fields
Borna Salehian, Hong-Yi Zhang, Mustafa A. Amin, David Kaiser, Mohammad Hossein Namjoo
Summary: This paper systematically derives the SP equations and relativistic corrections from the nonlinear and fully relativistic KGE equations in an expanding universe, providing insights into deviations and applicability beyond the SP system. The method presented simplifies the analysis of scalar dark matter dynamics and accurately captures deviations from the SP system towards the full KGE case, particularly in calculating the mass-radius relationship of solitons.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Astronomy & Astrophysics
Mariana Carrillo Gonzalez, Qiuyue Liang, Jeremy Sakstein, Mark Trodden
Summary: The tension between measurements of the Hubble constant at different redshifts may indicate new physics at play in the early universe, potentially involving early dark energy and scalar field interactions with standard model neutrinos. A neutrino-assisted early dark energy model is proposed to explain the coincidence between different epochs, with detailed analysis and constraints needed for validation. This scenario opens up new avenues for testing using cosmological data sets.
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
(2021)
Article
Physics, Multidisciplinary
Daniel Egana-Ugrinovic, Samuel Homiller, Patrick Meade
PHYSICAL REVIEW LETTERS
(2020)
Article
Instruments & Instrumentation
C. Alpigiani
JOURNAL OF INSTRUMENTATION
(2020)
Article
Physics, Multidisciplinary
Liron Barak, Itay M. Bloch, Mariano Cababie, Gustavo Cancelo, Luke Chaplinsky, Fernando Chierchie, Michael Crisler, Alex Drlica-Wagner, Rouven Essig, Juan Estrada, Erez Etzion, Guillermo Fernandez Moroni, Daniel Gift, Sravan Munagavalasa, Aviv Orly, Dario Rodrigues, Aman Singal, Miguel Sofo Haro, Leandro Stefanazzi, Javier Tiffenberg, Sho Uemura, Tomer Volansky, Tien-Tien Yu
PHYSICAL REVIEW LETTERS
(2020)
Article
Physics, Particles & Fields
Jae Hyeok Chang, Rouven Essig, Annika Reinert
Summary: The study explores freeze-in mechanisms for dark matter with different couplings and derives constraints, finding that certain parameter combinations lead to relic abundance inconsistent with observations.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Multidisciplinary
Peizhi Du, Daniel Egana-Ugrinovic, Rouven Essig, Mukul Sholapurkar
Summary: The study discusses various low-energy backgrounds affecting sub-GeV dark matter searches, with a focus on Cherenkov radiation, transition radiation, and recombination-generated photons. Detailed analyses of these backgrounds at current and planned detectors highlight the importance of design strategies in mitigating the impact of these backgrounds on dark matter detection sensitivity. Additionally, the study points out that future experiments aiming to detect dark matter via scintillation or phonon signals may face significant background challenges from Cherenkov radiation, transition radiation, and recombination.
Article
Multidisciplinary Sciences
Peizhi Du, Daniel Egana-Ugrinovic, Rouven Essig, Giacomo Fragione, Rosalba Perna
Summary: The study shows that future searches for tidal disruption events have the potential to uncover the existence of ultralight bosons.
NATURE COMMUNICATIONS
(2022)
Review
Physics, Multidisciplinary
Evgueni Goudzovski, Diego Redigolo, Kohsaku Tobioka, Jure Zupan, Gonzalo Alonso-Alvarez, Daniele S. M. Alves, Saurabh Bansal, Martin Bauer, Joachim Brod, Veronika Chobanova, Giancarlo D'Ambrosio, Alakabha Datta, Avital Dery, Francesco Dettori, Bogdan A. Dobrescu, Babette Dobrich, Daniel Egana-Ugrinovic, Gilly Elor, Miguel Escudero, Marco Fabbrichesi, Bartosz Fornal, Patrick J. Fox, Emidio Gabrielli, Li-Sheng Geng, Vladimir V. Gligorov, Martin Gorbahn, Stefania Gori, Benjamin Grinstein, Yuval Grossman, Diego Guadagnoli, Samuel Homiller, Matheus Hostert, Kevin J. Kelly, Teppei Kitahara, Simon Knapen, Gordan Krnjaic, Andrzej Kupsc, Gaia Lanfranchi, Danny Marfatia, Jorge Martin Camalich, Diego Martinez Santos, Karim Massri, Patrick Meade, Matthew Moulson, Hajime Nanjo, Matthias Neubert, Maxim Pospelov, Sophie Renner, Stefan Schacht, Marvin Schnubel, Rui-Xiang Shi, Brian Shuve, Tommaso Spadaro, Yotam Soreq, Emmanuel Stamou, Olcyr Sumensari, Michele Tammaro, Jorge Terol-Calvo, Andrea Thamm, Yu-Chen Tung, Dayong Wang, Kei Yamamoto, Robert Ziegler
Summary: Rare meson decays are valuable tools for investigating both heavy and light new physics, with the use of kaons being particularly advantageous due to their small decay widths and large datasets. Hyperon decay measurements also provide complementary information. This article summarizes the relevant phenomenological models and current status of searches in both kaon and hyperon decay channels. It identifies new search strategies for unexplored signatures and highlights the potential for significant advances in exploring light dark sectors with improved sensitivities from current and future experiments.
REPORTS ON PROGRESS IN PHYSICS
(2023)
Article
Astronomy & Astrophysics
Duncan Adams, Daniel Baxter, Hannah Day, Rouven Essig, Yonatan Kahn
Summary: The Migdal effect has drawn significant attention in the dark matter direct detection community as it is powerful in constraining sub-GeV particle dark matter. Confirming the Migdal effect through nuclear scattering using the Standard Model probes is essential. This study extends the Migdal effect calculations to neutron-nucleus scattering, focusing on neutron scattering angle distributions in silicon. The authors identify kinematic regimes where the assumptions made in current calculations hold and propose an experimental strategy to measure the Migdal effect using cryogenic silicon detectors at the upgraded NEXUS facility in Fermilab.
Article
Astronomy & Astrophysics
Nils Siemonsen, Cristina Mondino, Daniel Egana-Ugrinovic, Junwu Huang, Masha Baryakhtar, William E. East
Summary: We study the electrodynamics of a kinetically mixed dark photon cloud that forms through superradiance around a spinning black hole, and design strategies to search for the resulting multimessenger signals. A dark photon superradiance cloud sources a rotating dark electromagnetic field which, through kinetic mixing, induces a rotating visible electromagnetic field. The emission is expected to have a significant x-ray component and to potentially be periodic, with period set by the dark photon mass. The luminosity is comparable to the brightest x-ray sources in the Universe, allowing for searches at distances of up to hundreds of Mpc with existing telescopes.
Article
Astronomy & Astrophysics
P. H. Adrian, N. A. Baltzell, M. Battaglieri, M. Bondi, S. Boyarinov, C. Bravo, S. Bueltmann, P. Butti, V. D. Burkert, D. Calvo, T. Cao, M. Carpinelli, A. Celentano, G. Charles, L. Colaneri, W. Cooper, B. Crowe, C. Cuevas, A. D'Angelo, N. Dashyan, M. De Napoli, R. De Vita, A. Deur, M. Diamond, R. Dupre, H. Egiyan, L. Elouadrhiri, R. Essig, V. Fadeyev, C. Field, A. Filippi, A. Freyberger, M. Garcon, N. Gevorgyan, F. X. Girod, N. Graf, M. Graham, K. A. Griffioen, A. Grillo, M. Guidal, R. Herbst, M. Holtrop, J. Jaros, R. P. Johnson, G. Kalicy, M. Khandaker, V. Kubarovsky, E. Leonora, K. Livingston, L. Marsicano, T. Maruyama, S. McCarty, J. McCormick, B. McKinnon, K. Moffeit, O. Moreno, C. Munoz Camacho, T. Nelson, S. Niccolai, A. Odian, M. Oriunno, M. Osipenko, R. Paremuzyan, S. Paul, N. Randazzo, B. Raydo, B. Reese, A. Rizzo, P. Schuster, Y. G. Sharabian, G. Simi, A. Simonyan, V. Sipala, A. Spellman, D. Sokhan, M. Solt, S. Stepanyan, H. Szumila-Vance, N. Toro, S. Uemura, M. Ungaro, H. Voskanyan, L. B. Weinstein, B. Wojtsekhowski
Summary: The heavy photon search experiment (HPS) at the Thomas Jefferson National Accelerator Facility searches for electroproduced dark photons. Results from the 2016 engineering run show no evidence of dark photons in both the prompt and displaced vertex searches. HPS plans to explore new dark photon phase space in 2019 and 2021.
Article
Astronomy & Astrophysics
Kim Berghaus, Rouven Essig, Yonit Hochberg, Yutaro Shoji, Mukul Sholapurkar
Summary: This study investigates the scattering of high-energy photons from radioactive contaminants in solid-state target materials and their impact on the low-energy background for sub-GeV dark matter direct-detection searches. The results show that this background is most noticeable for energy deposits in the 1-100 meV range and requires active measures to suppress it.
Article
Astronomy & Astrophysics
Daniel Egana-Ugrinovic, Samuel Homiller, Patrick Meade
Summary: This study demonstrates that multiple-Higgs production at the LHC can be used to either discover or severely constrain models where new scalars couple to light quarks, and sets new limits on the coupling of the 125 GeV Higgs to quarks. It also explores the potential of triple-Higgs production as a discovery channel for various extended Higgs sectors at the LHC.
Article
Physics, Particles & Fields
Itay M. Bloch, Andrea Caputo, Rouven Essig, Diego Redigolo, Mukul Sholapurkar, Tomer Volansky
Summary: This study explores various new physics models to explain the recent XENON1T results, such as dark matter absorption and dark matter-electron scattering. Conclusions include introducing a novel axion model to explain the excess, using different states of dark matter to fit the data, and considering dark matter interacting through scattering off cosmic rays.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)