Results 31 to 40 of about 21,268 (194)

Freeze-in, glaciation, and UV sensitivity from light mediators

Journal of High Energy Physics, 2022
Dark matter (DM) freeze-in through a light mediator is an appealing model with excellent detection prospects at current and future experiments. Light mediator freeze-in is UV-insensitive insofar as most DM is produced at late times, and thus the DM ...
Nicolas Fernandez, Yonatan Kahn, Jessie Shelton   +2 more
doaj   +1 more source

Enhanced n-body annihilation of dark matter and its indirect signatures

Journal of High Energy Physics, 2019
We examine the possible indirect signatures of dark matter annihilation processes with a non-standard scaling with the dark matter density, and in particular the case where more than two dark matter particles participate in the annihilation process.
Mohammad Hossein Namjoo, Tracy R. Slatyer, Chih-Liang Wu   +2 more
doaj   +1 more source

Unification and Local Baryon Number

, 2017
We investigate the possibility to find an ultraviolet completion of the simple extensions of the Standard Model where baryon number is a local symmetry.
Ohmer, Sebastian, Perez, Pavel Fileviez
core   +4 more sources

Dark Matter from Minimal Flavor Violation

, 2011
We consider theories of flavored dark matter, in which the dark matter particle is part of a multiplet transforming nontrivially under the flavor group of the Standard Model in a manner consistent with the principle of Minimal Flavor Violation (MFV). MFV
A Adulpravitchai, A Belyaev, A Falkowski, A Katz, A Lenz, AI Vainshtein, AJ Buras, AJ Buras, AL Kagan, AV Manohar, B Batell, B Batell, B Bellazzini, B Grinstein, Brian Batell, C-R Chen, CP Burgess, CW Bauer, D Meloni, DE Soper, DL Rainwater, E Gross, E Komatsu, E Ma, E Nikolidakis, F Chen, F D’Eramo, G Bertone, G D’Ambrosio, G Jungman, GD Kribs, GD Kribs, J Alwall, J Gallicchio, J Goodman, J Goodman, J March-Russell, J McDonald, J-H Kim, JM Arnold, JM Arnold, JM Butterworth, JM Campbell, JM Campbell, Josef Pradler, JR Ellis, K Agashe, LJ Hall, M Bahr, M Beltrán, M Blennow, M Cacciari, M Cacciari, M Carena, M Cirelli, M Hirsch, M Lisanti, M Trott, MA Shifman, Michael Spannowsky, MS Boucenna, N Haba, N Kauer, P Sorensen, RS Chivukula, S Chang, S Chang, S Yellin, T Aaltonen, T Aaltonen, T Hambye, T Plehn, T Sjöstrand, TR Slatyer, V Cirigliano, V Silveira, VM Abazov, VM Abazov, Y Bai, Y Grossman, Y Kajiyama, Z Ligeti, Z Ligeti   +82 more
core   +1 more source

Gravitino dark matter in brane-world cosmology [PDF]

, 2007
The gravitino dark matter hypothesis in the brane cosmology is studied. The theoretical framework is the CMSSM for particle physics and RS II brane model for gravity.
Aliev A N, Brandenburg A, Brown R A, CDF Collaboration, Cerdeno D G, Covi L, Djouadi A Kneur J L Moultaka G, Edsjo J, Grigoris Panotopoulos, Heinemeyer S, Kiritsis E, Kiritsis E, Kofinas G, Panotopoulos G, Peccei R D, Pradler J Steffen F D, Roszkowski L, Spergel D N, Steffen F D   +18 more
core   +3 more sources

Direct detection of atomic dark matter in white dwarfs

Journal of High Energy Physics, 2021
Dark matter could have a dissipative asymmetric subcomponent in the form of atomic dark matter (aDM). This arises in many scenarios of dark complexity, and is a prediction of neutral naturalness, such as the Mirror Twin Higgs model. We show for the first
David Curtin, Jack Setford
doaj   +1 more source

Probing cosmic acceleration beyond the equation of state: Distinguishing between dark energy and modified gravity models [PDF]

, 2005
If general relativity is the correct theory of physics on large scales, then there is a differential equation that relates the Hubble expansion function, inferred from measurements of angular diameter distance and luminosity distance, to the growth rate ...
M. Ishak, A. Upadhye, David N. Spergel The University of Texas at Dallas, P. University   +3 more
semanticscholar   +1 more source

Polynomial $f(R)$ Palatini cosmology -- dynamical system approach

, 2017
We investigate cosmological dynamics based on $f(R)$ gravity in the Palatini formulation. In this study we use the dynamical system methods. We show that the evolution of the Friedmann equation reduces to the form of the piece-wise smooth dynamical ...
Stachowski, Aleksander, Szydlowski, Marek   +1 more
core   +1 more source

Dark matter in the Randall-Sundrum model with non-universal coupling

Journal of High Energy Physics, 2019
We consider simplified dark matter models (DM) interacting gravitationally with the standard model (SM) particles in a Randall-Sundrum (RS) framework. In this framework, the DM particles interact through the exchange of spin-2 Kaluza-Klein (KK) gravitons
Ashok Goyal, Rashidul Islam, Mukesh Kumar   +2 more
doaj   +1 more source

Holography and Brane-bulk Energy Exchange

, 2005
The five-dimensional description of generalized Randall-Sundrum cosmology is mapped via holography to a generalization of the Starobinsky model. This provides a holographic dual description of the cosmological brane-bulk energy exchange processes studied
Alexander S H S, Apostolopoulos P S, Apostolopoulos P S Brouzakis N Saridakis E N Tetradis N, Arkani-Hamed N, Banks T Douglas M R Horowitz G T Martinec E J, Bianchi M, Bianchi M, Birrell N D, Brandhuber A, Brax P, Brax P van de Bruck C Davis A C, Burgess C P, Charmousis C, Csaki C, Danielsson U H, Das S R, de Haro S, Duff M J, Dvali G R Shafi Q Solganik S, Elias Kiritsis, Fefferman C, Freedman D Z, Gabadadze G, Gregory J P, Henningson M, Kehagias A, Kiritsis E, Kiritsis E, Kiritsis E, Kiritsis E, Kiritsis E, Klebanov I R, Kraus P, Leeper E, Maartens R, Maldacena J, Maldacena J M, Nojiri S, Papadimitriou I, Papadimitriou I Skenderis K, Quevedo F, Silverstein E, Sundrum R, Tetradis N, Tomaras T N, Trodden M Carroll S M, Verlinde H, Witten E, Witten E, Zee A, ’t Hooft G   +50 more
core   +2 more sources