Results 21 to 30 of about 6,586 (50)

Probable evidence for a transient mega-electron volt emission line in the GRB 221023A

open access: yesNature Communications
Detection of spectral line in gamma-ray bursts (GRBs) is importance for studying GRB physics, as it provides insights into the composition and physical conditions of the GRB environment.
Lu-Yao Jiang   +8 more
doaj   +1 more source

Strong first order electroweak phase transition in 2HDM confronting future Z & Higgs factories

open access: yesJournal of High Energy Physics, 2021
The electroweak phase transition can be made first order by extending the Standard Model (SM) Higgs sector with extra scalars. The same new physics can explain the matter-antimatter asymmetry of the universe by supplying an extra source of CP violation ...
Wei Su   +2 more
doaj   +1 more source

Muonphilic dark matter explanation of gamma-ray galactic center excess: a comprehensive analysis

open access: yesJournal of High Energy Physics, 2022
The Galactic center gamma-ray excess (GCE) is a long-standing unsolved problem. One of candidate solutions, the dark matter (DM) annihilation, has been recently tested with other astrophysical observations, such as AMS-02 electron-positron spectra, Fermi
Murat Abdughani   +4 more
doaj   +1 more source

Constraining primordial black holes as dark matter using AMS-02 data

open access: yesEuropean Physical Journal C: Particles and Fields
Primordial black holes (PBHs) are the plausible candidates for the cosmological dark matter. Theoretically, PBHs with masses $$M_{\textrm{PBH}}$$ M PBH in the range of $$4\times 10^{14}\sim 10^{17}\,\textrm{g}$$ 4 × 10 14 ∼ 10 17 g can emit sub-GeV ...
Bing-Yu Su   +5 more
doaj   +1 more source

A delayed 400 GeV photon from GRB 221009A and implication on the intergalactic magnetic field

open access: yesNature Communications
Large High Altitude Air Shower Observatory has detected 0.2 − 13 TeV emission of GRB 221009A within 2000 s since the trigger. Here we report the detection of a 400 GeV photon, without accompanying prominent low-energy emission, by Fermi Large Area ...
Zi-Qing Xia   +3 more
doaj   +1 more source

The multi-mode acoustic gravitational wave experiment: MAGE

open access: yesScientific Reports, 2023
The Multi-mode Acoustic Gravitational wave Experiment (MAGE) is a high frequency gravitational wave detection experiment. In its first stage, the experiment features two near-identical quartz bulk acoustic wave resonators that act as strain antennas with
William M. Campbell   +2 more
doaj   +1 more source

Unexpected major geomagnetic storm caused by faint eruption of a solar trans-equatorial flux rope

open access: yesNature Communications
Some geomagnetic storms’ solar origins are ambiguous, making them hard to predict. On March 23, 2023, a severe geomagnetic storm occurred, however, forecasts based on remote-sensing observations failed to predict it.
Weilin Teng   +3 more
doaj   +1 more source

Classification of three-family flavoured DFSZ axion models that have no domain wall problem

open access: yesJournal of High Energy Physics
We provide an exhaustive classification of three-family DFSZ axion models that have no cosmological domain wall problem. This result is obtained by making the Peccei-Quinn symmetry flavour dependent in certain specific ways, thus reinforcing a possible ...
Peter Cox   +4 more
doaj   +1 more source

The ScotoSinglet Model: a scalar singlet extension of the Scotogenic Model

open access: yesJournal of High Energy Physics, 2021
The Scotogenic Model is one of the most minimal models to account for both neutrino masses and dark matter (DM). In this model, neutrino masses are generated at the one-loop level, and in principle, both the lightest fermion singlet and the lightest ...
Ankit Beniwal   +4 more
doaj   +1 more source

CYG $$\nu $$ ν S: detecting solar neutrinos with directional gas time projection chambers

open access: yesEuropean Physical Journal C: Particles and Fields
Cygnus is a proposed global network of large-scale gas time projection chambers (TPCs) with the capability of directionally detecting nuclear and electron recoils at $$\gtrsim $$ ≳ keV energies.
Chiara Lisotti   +10 more
doaj   +1 more source

Home - About - Disclaimer - Privacy