Results 21 to 30 of about 21,683 (149)

Luminous signals of inelastic dark matter in large detectors

Journal of High Energy Physics, 2019
We study luminous dark matter signals in models with inelastic scattering. Dark matter χ 1 that scatters inelastically off elements in the Earth is kicked into an excited state χ 2 that can subsequently decay into a monoenergetic photon inside a detector.
Joshua Eby, Patrick J. Fox, Roni Harnik, Graham D. Kribs   +3 more
doaj   +1 more source

Monochromatic Gamma Rays from Dark Matter Annihilation to Leptons [PDF]

, 2015
We investigate the relation between the annihilation of dark matter (DM) particles into lepton pairs and into 2-body final states including one or two photons.
Coogan, Adam, Profumo, Stefano, Shepherd, William   +2 more
core   +2 more sources

An inflationary probe of cosmic Higgs switching

Journal of High Energy Physics, 2020
A scalar Higgs field can be repeatedly switched on and off when it couples to a classically oscillating scalar modulus field. The modulus flips the Higgs mass term between stable and tachyonic values.
JiJi Fan, Matthew Reece, Yi Wang
doaj   +1 more source

Spin-0± portal induced Dark Matter

Journal of High Energy Physics, 2018
Standard model (SM) spin-zero singlets are constrained through their di-Bosonic decay channels via an effective coupling induced by a vector-like quark (VLQ) loop at the LHC for s=13 $$ \sqrt{s}=13 $$ TeV.
Sukanta Dutta, Ashok Goyal, Lalit Kumar Saini   +2 more
doaj   +1 more source

An update on the two singlet dark matter model

Journal of High Energy Physics, 2021
We revisit the two real singlet extension of the Standard Model with a Z 2 × Z 2 ′ $$ {Z}_2\times {Z}_2^{\prime } $$ symmetry. One of the singlet scalars S 2, by virtue of an unbroken Z 2 ′ $$ {Z}_2^{\prime } $$ symmetry, plays the role of a stable dark ...
Tanushree Basak, Baradhwaj Coleppa, Kousik Loho   +2 more
doaj   +1 more source

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

Detector-size upper bounds on dark hadron lifetime from cosmology

Journal of High Energy Physics, 2019
We show that in a confining hidden valley model where the lightest hidden particles are dark hadrons that have mass splittings larger than O 0.1 $$ \mathcal{O}(0.1) $$ GeV, if the lightest dark hadron is either stable or decays into Standard Model (SM ...
Lingfeng Li, Yuhsin Tsai
doaj   +1 more source

Model-independent constraints with extended dark matter EFT

Journal of High Energy Physics, 2020
We systematically explore the phenomenology of the recently proposed extended dark matter effective field theory (eDMeft), which allows for a consistent effective description of DM scenarios across different energy scales.
Tommi Alanne, Giorgio Arcadi, Florian Goertz, Valentin Tenorth, Stefan Vogl   +4 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

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