Results 71 to 80 of about 279,875 (165)

Production of dark photons through higher electromagnetic moments at LDMX: simulations and model discrimination

Journal of High Energy Physics
We extend the projected sensitivity of LDMX for sub-GeV dark matter (DM) to the case of dark photons produced through higher order electromagnetic moments. These moments arise from loop diagrams involving portal matter fields, along with the gauge fields
Riccardo Catena, Taylor R. Gray, Thomas Jerkvall   +2 more
doaj   +1 more source

Constraining Asymmetric Dark Matter using colliders and direct detection

Journal of High Energy Physics
We reappraise the viability of asymmetric dark matter (ADM) realized as a Dirac fermion coupling dominantly to the Standard Model fermions. Treating the interactions of such a DM particle with quarks/leptons in an effective-interactions framework, we ...
Arnab Roy, Basudeb Dasgupta, Monoranjan Guchait   +2 more
doaj   +1 more source

Gamma-ray lines may reveal the CP nature of the dark matter particle [PDF]

, 2019
Farinaldo S. Queiroz, Carlos E. Yaguna, Farinaldo S. Queiroz, Carlos E. Yaguna   +3 more
openalex   +1 more source

Vector dark matter from the 5-dimensional representation of SU(2) L

Journal of High Energy Physics
The introduction of electroweak multiplets that transform under any representation of the standard SU(2) L gauge group suggests the existence of electrically neutral stable particles capable of serving as cold dark matter in the ΛCDM cosmological model ...
Patricio Escalona, Sebastián Acevedo, Paulo Areyuna, Gonzalo Benítez-Irarrázabal, Pablo Solar, Alfonso Zerwekh   +5 more
doaj   +1 more source

Faint and Extended Galaxies as Probes for Understanding the Nature of Dark Matter Particles [PDF]

Diriba Gonfa Tolasa
openalex   +3 more sources

Complex dark photon dark matter EFT

Journal of High Energy Physics
We construct an effective field theory for complex Stueckelberg dark photon dark matter. Such an effective construction can be realized by writing down a complete set of operators up to dimension six built with the complex dark photon and Standard Model ...
Enrico Bertuzzo, Tommaso Sassi, Andrea Tesi   +2 more
doaj   +1 more source

Asymmetric dark matter from semi-annihilation: unitarity constraints and long-lived final states

Journal of High Energy Physics
This work presents an asymmetric dark matter model with relic density determined by the freeze-out of asymmetric semi-annihilations into long-lived particles slowly decaying into the Standard Model states.
Tomáš Blažek, Peter Maták, Viktor Zaujec   +2 more
doaj   +1 more source

Gravitational production of sterile neutrinos

Journal of High Energy Physics
We consider gravitational production of singlet fermions such as sterile neutrinos during and after inflation. The production efficiency due to classical gravity is suppressed by the fermion mass.
Fotis Koutroulis, Oleg Lebedev, Stefan Pokorski   +2 more
doaj   +1 more source

Cosmic Connections

, 2003
A National Research Council study on connecting quarks with the cosmos has recently posed a number of the more important open questions at the interface between particle physics and cosmology.
Ellis, John
core  

Multi-messenger FIMP

Journal of High Energy Physics
We propose a multi-messenger frontier probe of non-thermal or freeze-in massive particle (FIMP) dark matter (DM) by considering an effective field theory (EFT) setup.
Debasish Borah, Nayan Das, Sahabub Jahedi, Dipankar Pradhan   +3 more
doaj   +1 more source