Article
Astronomy & Astrophysics
Shin'ichiro Ando, Koji Ishiwata
Summary: This study investigates observable signals from dark matter self-annihilating in dwarf spheroidal galaxies via the Sommerfeld effect, using prior distributions of parameters to determine the J-factor. The most promising dSphs show a decrease in J-factor compared to earlier estimates, yet the Cherenkov Telescope Array is expected to detect thermal wino dark matter by pointing towards selected dSphs for 500 hours.
Article
Astronomy & Astrophysics
Aritra Biswas, Lopamudra Mukherjee, Soumitra Nandi, Sunando Kumar Patra
Summary: We impose constraints on the parameters of a new physics model with a potential dark matter (DM) signature through a global Cabibbo-Kobayashi-Maskawa (CKM) fit analysis. The model involves neutral quark current interactions mediated by a scalar that affect semileptonic and purely leptonic meson decays at one loop. We update the fit results for the Wolfenstein parameters and CKM elements by incorporating various updated inputs, including the contribution from the new model.
Article
Astronomy & Astrophysics
A. Acharyya, A. Archer, P. Bangale, J. T. Bartkoske, P. Batista, M. Baumgart, W. Benbow, J. H. Buckley, A. Falcone, Q. Feng, J. P. Finley, G. M. Foote, L. Fortson, A. Furniss, G. Gallagher, W. F. Hanlon, O. Hervet, J. Hoang, J. Holder, T. B. Humensky, W. Jin, P. Kaaret, M. Kertzman, M. Kherlakian, D. Kieda, T. K. Kleiner, N. Korzoun, F. Krennrich, M. J. Lang, M. Lundy, G. Maier, C. E. McGrath, P. Moriarty, S. O'Brien, R. A. Ong, K. Pfrang, M. Pohl, E. Pueschel, J. Quinn, K. Ragan, P. T. Reynolds, E. Roache, N. L. Rodd, J. L. Ryan, I. Sadeh, L. Saha, M. Santander, G. H. Sembroski, R. Shang, M. Splettstoesser, D. Tak, J. V. Tucci, V. V. Vassiliev, D. A. Williams
Summary: Dark matter is a significant component in our understanding of the universe, and weakly interacting massive particles (WIMPs) are considered to be the leading candidates for dark matter. However, no evidence of WIMPs has been found in the conventional parameter space. In this study, we explore the possibility of ultraheavy dark matter (UHDM) as an alternative to WIMPs and search for indirect signals of dark matter annihilation in a higher mass range using the VERITAS gamma-ray observatory. Results from the observations of dwarf spheroidal galaxies suggest no gamma-ray signal from UHDM annihilation, leading to constraints on the annihilation cross section and allowed radius of UHDM particles.
ASTROPHYSICAL JOURNAL
(2023)
Article
Astronomy & Astrophysics
Yu Cheng, Shao-Feng Ge, Xiao-Gang He, Jie Sheng
Summary: The possibility of reactivating the forbidden annihilation channel of dark matter around supermassive black holes has been discovered, providing a unique signal that can serve as evidence for its existence. Fermi-LAT data around Sgr ★ provides preliminary support for this theory.
Article
Physics, Multidisciplinary
Ronny Frumkin, Eric Kuflik, Itay Lavie, Tal Silverwater
Summary: We study the general properties of the freeze-out of a thermal relic and provide estimates for relic abundance and corrections for slow freeze-out processes. The results generalize the relationship between dark matter mass and coupling. The study also predicts nearly degenerate states and generically metastable dark matter beyond the conventional freeze-out maximum mass.
PHYSICAL REVIEW LETTERS
(2023)
Article
Astronomy & Astrophysics
Weikang Lin, Tsutomu T. Yanagida
Summary: This study investigates the possibility of the B - L gauge boson as a fraction of dark matter and its implications in explaining the Galactic 511 keV emission, cosmological viability, and consistency with the seesaw mechanism. The results suggest the importance of this model in understanding various phenomena related to B - L symmetry breaking.
Article
Astronomy & Astrophysics
M. Beneke, K. Urban, M. Vollmann
Summary: In this study, accurate energy spectra of high-energy photons from TeV scale dark-matter annihilation in the minimal wino and Higgsino benchmark models are provided. By merging electroweak Sudakov resummation and electroweak parton-shower, and considering the Sommerfeld effect, it is found that electroweak resummation significantly changes the shape of the photon-energy spectrum and the form of the line-signal.
Article
Astronomy & Astrophysics
M. Beneke, S. Lederer, K. Urban
Summary: The dark matter annihilation cross section can be greatly increased if the annihilation occurs into a narrow resonance or if the dark-matter particles experience a long-range force before annihilation (Sommerfeld effect). We demonstrate that when both enhancements are present, they completely factorize, meaning that all long-distance non-factorizable effects cancel at the leading order. We then investigate the feasibility of super-resonant annihilation in Standard Model Higgs portal and simplified MSSM-inspired dark-matter scenarios.
Article
Physics, Multidisciplinary
Silvia Manconi, Alessandro Cuoco, Julien Lesgourgues
Summary: Scientists have used synchrotron polarization for the first time to constrain the annihilation of dark matter. They found that synchrotron polarization is generally more constraining than synchrotron intensity, independent of uncertainties in electron and positron propagation models or the Galactic magnetic field. The bounds obtained in this study compete with cosmic microwave background limits, particularly in the case of leptophilic dark matter.
PHYSICAL REVIEW LETTERS
(2022)
Article
Astronomy & Astrophysics
Youjia Wu, Sebastian Baum, Katherine Freese, Luca Visinelli, Hai -Bo Yu
Summary: Dark matter annihilation could potentially power the formation of the first luminous stars in the Universe, known as dark stars. In this study, we investigate the formation of dark stars in the self-interacting dark matter (SIDM) scenario. We propose a concrete particle physics model for SIDM that can explain various astrophysical observations and address small-scale problems of collisionless dark matter. Our findings suggest that dark stars powered by SIDM can have similar properties to those predicted in collisionless dark matter models.
Article
Astronomy & Astrophysics
Kaustubh Agashe, Steven J. Clark, Bhaskar Dutta, Yuhsin Tsai
Summary: This study explores the annihilation of dark matter in galaxies, highlighting the impact of different dark matter parameters on photon signals, particularly the differences between the Milky Way and dwarf galaxies.
Article
Astronomy & Astrophysics
Shankha Banerjee, Fawzi Boudjema, Nabarun Chakrabarty, Hao Sun
Summary: This study investigates one-loop electroweak corrections for dark matter annihilation processes, highlighting their significant impact on controlling parameters and renormalization scale in the dark sector. The findings suggest that these corrections should be considered as a theoretical uncertainty in analyses based on tree-level cross sections of relic density calculations.
Article
Astronomy & Astrophysics
Celine Boehm, Xiaoyong Chu, Jui-Lin Kuo, Josef Pradler
Summary: The study revisited the possibility of light-scalar dark matter coupled to electrons through fermion or vector mediators, and established new limits and loop-induced processes strengths. Various constraints were considered, largely excluding the explanation of the International Gamma-Ray Astrophysics Laboratory excess of 511 keV photons by galactic annihilation of these particles.
Article
Astronomy & Astrophysics
R. Alfaro, C. Alvarez, J. C. Arteaga-Velazquez, D. Avila Rojas, H. A. Ayala Solares, R. Babu, E. Belmont-Moreno, K. S. Caballero-Mora, T. Capistran, A. Carraminana, S. Casanova, O. Chaparro-Amaro, U. Cotti, J. Cotzomi, E. De la Fuente, R. Diaz Hernandez, B. L. Dingus, M. A. DuVernois, M. Durocher, J. C. Diaz-Velez, C. Espinoza, K. L. Fan, N. Fraija, J. A. Garcia-Gonzalez, F. Garfias, M. M. Gonzalez, J. P. Harding, S. Hernandez-Cadena, D. Huang, F. Hueyotl-Zahuantitla, A. Iriarte, V. Joshi, S. Kaufmann, D. Kieda, J. Lee, H. Leon Vargas, J. T. Linnemann, A. L. Longinotti, G. Luis-Raya, K. Malone, O. Martinez, J. Martinez-Castro, J. A. Matthews, E. Moreno, M. Mostafa, A. Nayerhoda, L. Nellen, N. Omodei, Y. Perez Araujo, E. G. Perez-Perez, C. D. Rho, D. Rosa-Gonzalez, H. Salazar, D. Salazar-Gallegos, A. Sandoval, J. Serna-Franco, Y. Son, R. W. Springer, O. Tibolla, K. Tollefson, I. Torres, R. Torres-Escobedo, R. Turner, F. Urena-Mena, L. Villasenor, X. Wang, E. Willox, H. Zhou, C. de Leon, V. Gammaldi, E. Karukes, P. Salucci
Summary: We present the results of dark matter (DM) searches in 31 dwarf irregular (dIrr) galaxies within the field of view of the HAWC Observatory. Although no statistically significant DM signal is observed in these galaxies, we provide exclusion limits for WIMP candidates with masses between 1 and 100 TeV. The exclusion limits from dIrr galaxies are comparable to those from classical dSph galaxies and weaker than ultrafaint dSph limits by about two orders of magnitude.
ASTROPHYSICAL JOURNAL
(2023)
Article
Astronomy & Astrophysics
Xue-Kang Guo, Yi-Fei Lu, Yong-Bo Huang, Rong-Lan Li, Ben-Yang Zhu, Yun-Feng Liang
Summary: This study searched for neutrino signals from 18 dwarf spheroidal galaxies using muon-track data from the IceCube neutrino observatory. No significant signals were found in either the individual or combined analysis. Constraints on the annihilation cross section of dark matter particles were derived based on these null results.
Review
Physics, Nuclear
M. G. Betti, M. Biasotti, A. Bosca, F. Calle, J. Carabe-Lopez, G. Cavoto, C. Chang, W. Chung, A. G. Cocco, A. P. Colijn, J. Conrad, N. D'Ambrosio, P. F. de Salas, M. Faverzani, A. Ferella, E. Ferri, P. Garcia-Abia, G. Garcia Gomez-Tejedor, S. Gariazzo, F. Gatti, C. Gentile, A. Giachero, J. E. Gudmundsson, Y. Hochberg, Y. Kahn, M. Lisanti, C. Mancini-Terracciano, G. Mangano, L. E. Marcucci, C. Mariani, J. Martinez, M. Messina, A. Molinero-Vela, E. Monticone, A. Nucciotti, F. Pandolfi, S. Pastor, J. Pedros, C. Perez de los Heros, O. Pisanti, A. D. Polosa, A. Puiu, Y. Raitses, M. Rajteri, N. Rossi, R. Santorelli, K. Schaeffner, C. F. Strid, C. G. Tully, F. Zhao, K. M. Zurek
PROGRESS IN PARTICLE AND NUCLEAR PHYSICS
(2019)
Article
Astronomy & Astrophysics
Antonio Boveia, Oliver Buchmueller, Giorgio Busoni, Francesco D'Eramo, Albert De Roeck, Andrea De Simone, Caterina Doglioni, Matthew J. Dolan, Marie-Helene Genest, Kristian Hahn, Ulrich Haisch, Philip C. Harris, Jan Heisig, Valerio Ippolito, Felix Kahlhoefer, Valentin V. Khoze, Suchita Kulkarni, Greg Landsberg, Steven Lowette, Sarah Malik, Michelangelo Mangano, Christopher McCabe, Stephen Mrenna, Priscilla Pani, Tristan du Pree, Antonio Riotto, David Salek, Kai Schmidt-Hoberg, William Shepherd, Tim M. P. Tait, Lian-Tao Wang, Steven Worm, Kathryn Zurek
PHYSICS OF THE DARK UNIVERSE
(2020)
Article
Physics, Particles & Fields
Tanner Trickle, Zhengkang Zhang, Kathryn M. Zurek, Katherine Inzani, Sinead M. Griffin
JOURNAL OF HIGH ENERGY PHYSICS
(2020)
Article
Physics, Multidisciplinary
Tanner Trickle, Zhengkang Zhang, Kathryn M. Zurek
PHYSICAL REVIEW LETTERS
(2020)
Article
Physics, Particles & Fields
Erik Verlinde, Kathryn M. Zurek
JOURNAL OF HIGH ENERGY PHYSICS
(2020)
Article
Astronomy & Astrophysics
Harikrishnan Ramani, Tanner Trickle, Kathryn M. Zurek
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
(2020)
Article
Astronomy & Astrophysics
Erik P. Verlinde, Kathryn M. Zurek
Summary: In this study, we investigate the uncertainty in interferometer arm length due to metric fluctuations from quantum gravity, proposing a specific microscopic model of energy fluctuations in holographic degrees of freedom. Our model predicts strong long distance correlations in the transverse direction and suggests a potential signal observable in a gravitational wave interferometer. We also relate the positional uncertainty principle to the 't Hooft gravitational S-matrix.
Article
Astronomy & Astrophysics
Yiwen Zhang, Kathryn M. Zurek
Summary: This study investigates quantum spacetime fluctuations near light-sheet horizons associated with a Rindler wedge in anti-de Sitter (AdS) spacetime, within the framework of AdS=CFT. The vacuum Einstein equation is solved near the light-sheet horizon, assuming a quantum source smeared out in a Planckian width along one of the light-cone directions. The altered Einstein equation takes the form of a stochastic partial differential equation, resembling a Langevin equation, which results from the presence of gravitational shock waves created by vacuum energy fluctuations. By integrating fluctuations along the light sheet, an accumulated effect in the round-trip time of a photon crossing the horizon of the Rindler wedge is found, dependent on both the d-dimensional Newton constant G and the AdS curvature L, consistent with previous research.
Article
Astronomy & Astrophysics
Ahmet Coskuner, Andrea Mitridate, Andres Olivares, Kathryn M. Zurek
Summary: This paper characterizes the daily modulation rate of dark matter interaction with a Dirac material, finding that in ZrTe5, the daily modulation is a fraction of the total rate determined by the orientation of the material's dielectric tensor with respect to the dark matter wind. This large modulation allows for rapid verification or ruling out of any putative dark matter scattering signal by changing the crystal orientation and observing how the daily modulation pattern changes.
Article
Astronomy & Astrophysics
Andrea Mitridate, Tanner Trickle, Zhengkang Zhang, Kathryn M. Zurek
Article
Astronomy & Astrophysics
Sinead M. Griffin, Katherine Inzani, Tanner Trickle, Zhengkang Zhang, Kathryn M. Zurek
Proceedings Paper
Astronomy & Astrophysics
Kathryn M. Zurek
ILLUMINATING DARK MATTER
(2019)
Article
Astronomy & Astrophysics
Ahmet Coskuner, Dorota M. Grabowska, Simon Knapen, Kathryn M. Zurek
Article
Astronomy & Astrophysics
Jeff A. Dror, Harikrishnan Ramani, Tanner Trickle, Kathryn M. Zurek
Article
Astronomy & Astrophysics
Moira I. Gresham, Kathryn M. Zurek