Results 31 to 40 of about 21,978 (196)

Model-independent analysis of the DAMPE excess

Journal of High Energy Physics, 2018
The Dark Matter Particle Explorer (DAMPE) recently released measurements of the electron spectrum with a hint of a narrow peak at about 1.4 TeV. We investigate dark matter (DM) models that could produce such a signal by annihilation in a nearby subhalo ...
Peter Athron, Csaba Balazs, Andrew Fowlie, Yang Zhang   +3 more
doaj   +1 more source

Gravitational production of vector dark matter

Journal of High Energy Physics, 2020
A model of vector dark matter that communicates with the Standard Model only through gravitational interactions has been investigated. It has been shown in detail how does the canonical quantization of the vector field in varying FLRW geometry implies a ...
Aqeel Ahmed, Bohdan Grzadkowski, Anna Socha   +2 more
doaj   +1 more source

Electroweak phase transition and gravitational waves in a two-component dark matter model

Journal of High Energy Physics, 2022
We investigate an extension of the Standard Model (SM) with two candidates for dark matter (DM). One of them is a real scalar field and the other is an Abelian gauge field.
Ahmad Mohamadnejad
doaj   +1 more source

Baryonic Higgs and dark matter

Journal of High Energy Physics, 2021
We discuss the correlation between dark matter and Higgs decays in gauge theories where the dark matter is predicted from anomaly cancellation. In these theories, the Higgs responsible for the breaking of the gauge symmetry generates the mass for the ...
Pavel Fileviez Pérez, Clara Murgui, Alexis D. Plascencia   +2 more
doaj   +1 more source

Dark Matter: A Primer [PDF]

, 2011
Dark matter is one of the greatest unsolved mysteries in cosmology at the present time. About 80% of the universe's gravitating matter is non-luminous, and its nature and distribution are for the most part unknown.
Duda, Gintaras, Garrett, Katherine
core   +3 more sources

Cosmological constraint on vector mediator of neutrino-electron interaction in light of XENON1T excess

Journal of High Energy Physics, 2020
Recently, the XENON1T collaboration reported an excess in the electron recoil energy spectrum. One of the simplest new physics interpretation is a new neutrino-electron interaction mediated by a light vector particle.
Masahiro Ibe, Shin Kobayashi, Yuhei Nakayama, Satoshi Shirai   +3 more
doaj   +1 more source

When freeze-out occurs due to a non-Boltzmann suppression: a study of degenerate dark sector

Journal of High Energy Physics, 2021
Exponential suppression or commonly known as the Boltzmann suppression in the number density of dark matter is the key ingredient for creating chemical imbalance prior to the usual thermal freeze-out.
Anirban Biswas, Sougata Ganguly, Sourov Roy   +2 more
doaj   +1 more source

Particle Physics and Cosmology

, 2014
Today, both particle physics and cosmology are described by few parameter Standard Models, i.e. it is possible to deduce consequence of particle physics in cosmology and vice verse.
Pralavorio, P.
core   +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

Beyond the Standard Model [PDF]

, 2006
I have been assigned this broad title but my talk will be mostly concerned with the origin ofthe electroweak scale. I will attempt to give an overview of the theoretical ‘laborings’ thatcame up after the end of the LEP era and in preparation to the ...
Riccardo Rattazzi
semanticscholar   +1 more source