Results 41 to 50 of about 465 (109)

Simplified Dark Matter Models

Advances in High Energy Physics, Volume 2018, Issue 1, 2018., 2018
I review the construction of simplified models for dark matter searches. After discussing the philosophy and some simple examples, I turn the attention to the aspect of the theoretical consistency and to the implications of the necessary extensions of these models.
Enrico Morgante, Farinaldo Queiroz
wiley   +1 more source

Hierarchies from landscape probability gradients and critical boundaries

Journal of High Energy Physics
If the gradient of a probability distribution on a landscape of vacua aligns with the variation of some fundamental parameter, the parameter may be likely to take some non-generic value.
Oleksii Matsedonskyi
doaj   +1 more source

The Impact of a Long‐Lived Basal Magma Ocean on the Thermochemical Evolution of Mars

Journal of Geophysical Research: Planets, Volume 130, Issue 11, November 2025.
Abstract A basal magma ocean (BMO) has been suggested to form as a consequence of cumulate overturn following crystallization of an initial global magma ocean. As a consequence of enrichment in iron and heat‐producing elements (HPE), the BMO stabilizes gravitationally at the base of the planetary mantle, affecting the efficiency of mantle convection ...
Kar Wai Cheng, Maxim D. Ballmer, Paul J. Tackley, Amir Khan   +3 more
wiley   +1 more source

The Discreet Charm of Higgsino Dark Matter: A Pocket Review

Advances in High Energy Physics, Volume 2018, Issue 1, 2018., 2018
We give a brief review of the current constraints and prospects for detection of higgsino dark matter in low‐scale supersymmetry. In the first part we argue, after performing a survey of all potential dark matter particles in the MSSM, that the (nearly) pure higgsino is the only candidate emerging virtually unscathed from the wealth of observational ...
Kamila Kowalska, Enrico Maria Sessolo, Yann Mambrini   +2 more
wiley   +1 more source

Revisiting axion dark matter with nonlinear transitions

Journal of High Energy Physics
Recently, two of the present authors showed that even when the axion momentum is much smaller than its mass, the axion can still behave like radiation if its energy density greatly exceeds the maximum potential energy set by the cosine-type potential. In
Max Miyazaki, Yuma Narita, Deheng Song, Nemin Yaginuma, Wen Yin   +4 more
doaj   +1 more source

Slow-roll inflation in Palatini F(R) gravity

Journal of High Energy Physics, 2022
We study single field slow-roll inflation in the presence of F(R) gravity in the Palatini formulation. In contrast to metric F(R), when rewritten in terms of an auxiliary field and moved to the Einstein frame, Palatini F(R) does not develop a new ...
Christian Dioguardi, Antonio Racioppi, Eemeli Tomberg   +2 more
doaj   +1 more source

Visible GeV ALP from TeV Vector‐Like Leptons

Fortschritte der Physik, Volume 73, Issue 3, March 2025.
Abstract A model is presented where a GeV axion‐like‐particle (ALP) is predicted in a large portion of the parameter space due to the presence of explicit Peccei–Quinn (PQ) symmetry‐breaking terms in an exotic leptonic sector. The latter provides a solution to the muon g−2$g-2$ anomaly, within the framework of the Linear Seesaw neutrino mechanism.
Arturo de Giorgi, Marta Fuentes Zamoro, Luca Merlo   +2 more
wiley   +1 more source

Gauge‐Singlet Vector‐Like Fermion Dark Matter, LHC Diphoton Rate, and Direct Detection

Advances in High Energy Physics, Volume 2017, Issue 1, 2017., 2017
We study a gauge‐singlet vector‐like fermion hidden sector dark matter model, in which the communication between the dark matter and the visible standard model sector is via the Higgs‐portal scalar‐Higgs mixing and also via a hidden sector scalar with loop‐level couplings to two gluons and also to two hypercharge gauge bosons induced by a vector‐like ...
Shrihari Gopalakrishna, Tuhin Subhra Mukherjee, Anna Cimmino   +2 more
wiley   +1 more source

Thermal production of astrophobic axions

Journal of High Energy Physics
Hot axions are produced in the early Universe via their interactions with Standard Model particles, contributing to dark radiation commonly parameterized as ∆N eff.
Marcin Badziak, Keisuke Harigaya, Michał Łukawski, Robert Ziegler   +3 more
doaj   +1 more source

Bioanthropological analysis of human remains from the archaic and classic period discovered in Puyil cave, Mexico

American Journal of Biological Anthropology, Volume 184, Issue 2, June 2024.
Geographic distribution of shared mtDNA haplotypes between. This map shows the geographic distribution of shared mtDNA haplotypes between the human remains of Puyil Cave and those reported previously from ancient and contemporary people. Additionally, in the bottom right corner are shown the skulls on the surface of Chamber 4, discovered in this cave ...
María Teresa Navarro‐Romero, María de Lourdes Muñoz, Ben Krause‐Kyora, Javiera Cervini‐Silva, Enrique Alcalá‐Castañeda, Randy E. David   +5 more
wiley   +1 more source