Results 41 to 50 of about 430 (123)

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

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

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

Tree-level unitarity in Higgs inflation in the metric and the Palatini formulation

Journal of High Energy Physics, 2022
We calculate the tree-level amplitudes for electrically neutral 2 → 2 scattering for the Standard Model Higgs doublet non-minimally coupled to the Ricci scalar. We consider both the metric and the Palatini formulation of gravity. We find the partial wave
Asuka Ito, Wafaa Khater, Syksy Räsänen
doaj   +1 more source

Neutrinos: A gateway to beyond the standard model

, 2021
The Standard Model (SM) of particle physics based on the gauge group $ SU(3) \otimes SU(2)_L \otimes U(1)_Y$ is very appealing as it describes physics at low energy quite spectacularly.
Thapa, Anil
core  

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

Beyond Standard Model Searches in the MiniBooNE Experiment

Advances in High Energy Physics, Volume 2015, Issue 1, 2015., 2015
The MiniBooNE experiment has contributed substantially to beyond standard model searches in the neutrino sector. The experiment was originally designed to test the Δm2 ~ 1 eV2 region of the sterile neutrino hypothesis by observing νe(ν-e) charged current quasielastic signals from a νμ(ν-μ) beam.
Teppei Katori, Janet M. Conrad, Abhijit Samanta   +2 more
wiley   +1 more source

Savior curvatons and large non-Gaussianity

Journal of High Energy Physics, 2023
Curvatons are light (compared to the Hubble scale during inflation) spectator fields during inflation that potentially contribute to adiabatic curvature perturbations post-inflation.
Jackie Lodman, Qianshu Lu, Lisa Randall
doaj   +1 more source