Results 91 to 100 of about 21,978 (196)

Upper Bounds on Lepton-number Violating Processes

open access: yes, 2005
We consider four lepton-number violating (\lv) processes: (a) neutrinoless double-beta decay (0\nu\beta\beta), (b) Delta L = 2 tau decays, (c) Delta L = 2 rare meson decays and (d) nuclear muon-positron conversion.
A. Ali   +11 more
core   +1 more source

MMS Observations of Whistler‐Mode Waves: Comparison Between the Observed and Theoretically Predicted Electric Field

open access: yesJournal of Geophysical Research: Space Physics, Volume 131, Issue 3, March 2026.
Abstract Electric field instruments function by electrically coupling to the surrounding plasma, resulting in a response function that varies depending on local conditions. This variable coupling can complicate quantitative interpretation of wave measurements, yet is rarely considered.
D. P. Hartley   +7 more
wiley   +1 more source

Reconciling large- and small-scale structure in Twin Higgs models

open access: yesJournal of High Energy Physics, 2017
We study possible extensions of the Twin Higgs model that solve the Hierarchy problem and simultaneously address problems of the large- and small-scale structures of the Universe.
Valentina Prilepina, Yuhsin Tsai
doaj   +1 more source

Cosmology in Mirror Twin Higgs and Neutrino Masses

open access: yes, 2016
We explore a simple solution to the cosmological challenges of the original Mirror Twin Higgs (MTH) model that leads to interesting implications for experiment.
Chacko, Zackaria   +3 more
core   +1 more source

Characterization of Mercury's Atomic and Molecular Hydrogen Exosphere and the First Detection of H2 Ions

open access: yesJournal of Geophysical Research: Planets, Volume 131, Issue 3, March 2026.
Abstract From 1974 to 1975, the Mariner 10 spacecraft studied Mercury's environment during three flybys and detected hydrogen, helium, and possibly atomic oxygen in the exosphere using its ultraviolet spectrometer, but no molecular hydrogen. Based on the sensitivity of the occultation instrument, an upper limit for the H2 ${\mathrm{H}}_{2}$ surface ...
F. Weichbold   +8 more
wiley   +1 more source

Direct detections of Majorana dark matter in vector portal

open access: yesJournal of High Energy Physics, 2019
In this paper we investigate the direct detections of Majorana dark matter (MDM) in vector portal. Considering that the tree-level scattering cross sections in these models are either dark matter velocity suppressed or spin-dependent, we calculate ...
Wei Chao
doaj   +1 more source

Quintessence Saves Higgs Instability

open access: yes, 2018
We study a model where quintessence potential $e^{-\xi\phi}$ coupled to Higgs potential. We calculate the evolution of the quintessence, and track the running of the effective Higgs self-coupling.
Han, Chengcheng, Pi, Shi, Sasaki, Misao
core   +1 more source

Effects of Hydrogen on Fe‐S Alloys and Their Implications for the Martian Core

open access: yesJournal of Geophysical Research: Planets, Volume 131, Issue 3, March 2026.
Abstract Meteorites suggest the Martian core comprises iron (Fe) or iron‐nickel (Fe‐Ni) alloy with sulfur (S) identified as the primary light element. The InSight data revealed a larger, less dense Martian core than previously estimated, indicating additional light elements.
Xuehui Wei   +4 more
wiley   +1 more source

We must know. We will know

open access: yes, 2010
The after-dinner talk has by now become a tradition of this Conference series on Quark Confinement and the Hadron Spectrum. On this occasion, I have tried to combine a free-style and (hopefully) amusing presentation with deep questions of physics ...
Sanchis-Lozano, Miguel-Angel
core   +1 more source

Asymmetric Crater Relaxation on an Ice‐Rich Ceres Driven by Insolation

open access: yesJournal of Geophysical Research: Planets, Volume 131, Issue 3, March 2026.
Abstract Ceres has a high ice content within its crust and is the closest dwarf planet to the sun. The resultant high insolation levels at Ceres' surface (in comparison to the outer solar system) leads to high variations in surface temperature, which is dependent on both latitude and orientation of the slope (i.e., equatorward‐ or poleward‐facing).
I. F. Pamerleau   +2 more
wiley   +1 more source

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