Results 41 to 50 of about 21,756 (168)
Relaxion fluctuations (self-stopping relaxion) and overview of relaxion stopping mechanisms
Journal of High Energy Physics, 2020 In implementations of the electroweak scale cosmological relaxation mechanism proposed so far, the effect of the quantum fluctuations of the homogeneous relaxion field has been ignored.
Nayara Fonseca +3 more
doaj +1 more source
Detecting dark photons from atomic rearrangement in the galaxy
Journal of High Energy Physics, 2021 We study a new dark sector signature for an atomic process of “rearrangement” in the galaxy. In this process, a hydrogen-like atomic dark matter state together with its anti-particle can rearrange to form a highly-excited bound state.
James Eiger, Michael Geller
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 +2 more sources
Loading Non‐Maxwellian Velocity Distributions in Particle Simulations
Journal of Geophysical Research: Space Physics, Volume 131, Issue 3, March 2026.Abstract Numerical procedures for generating non‐Maxwellian velocity distributions in particle simulations are presented. First, Monte Carlo methods for the (r,q) $(r,q)$ distribution that generalizes flattop and Kappa distributions are discussed. Then, two rejection methods for the regularized Kappa distribution are presented, followed by a comparison
Seiji Zenitani +2 more
wiley +1 more source
Split fermionic WIMPs evade direct detection
Journal of High Energy Physics, 2018 We consider a model with two gauge singlet fermionic WIMPs communicating with the SM particles by a singlet scalar mediator via a Higgs portal. While the light WIMP is stable and plays the role of the dark matter (DM) candidate, the heavy partner is a ...
Karim Ghorbani
doaj +1 more source
Gauge boson signals at the cosmological collider
Journal of High Energy Physics, 2020 We study the production of massive gauge bosons during inflation from the axion-type coupling to the inflaton and the corresponding oscillatory features in the primordial non-Gaussianity.
Lian-Tao Wang, Zhong-Zhi Xianyu
doaj +1 more source
Physics of the linear collider
, 2003 This presentation intends to illustrate the specific capabilities of an e$^+$e$^-$ sub-TeV collider to provide answers on the basic issues in physics: origin of mass, hierarchy of masses, cosmological problems.
F. RICHARD, Rizzo T. G.
core +2 more sources
Multiple Reconnection X‐Lines at the Earth's Magnetopause in the Presence of Magnetosheath Flow
Journal of Geophysical Research: Space Physics, Volume 131, Issue 3, March 2026.Abstract Magnetic reconnection occurs continuously along long X‐lines at the Earth's magnetopause. The maximum magnetic shear model predicts the locations of these long X‐lines for a wide range of upstream solar wind conditions. One of the more perplexing observational results is that these X‐lines appear to be stationary, even in the presence of ...
S. A. Fuselier +9 more
wiley +1 more source
Constraints on light Dark Matter fermions from relic density consideration and Tsallis statistics
Journal of High Energy Physics, 2018 The cold dark matter fermions with mass MeV scale, pair produced inside the supernova SN1987A core, can freely stream away from the supernovae and hence contributes to its energy loss rate.
Atanu Guha, Prasanta Kumar Das
doaj +1 more source
A multi-temperature universe can allow a sub-MeV dark photon dark matter
Journal of High Energy Physics, 2021 An analysis of sub-MeV dark photon as dark matter is given which is achieved with two hidden sectors, one of which interacts directly with the visible sector while the second has only indirect coupling with the visible sector.
Amin Aboubrahim +3 more
doaj +1 more source