Results 61 to 70 of about 21,959 (162)

Probing the Connection between IceCube Neutrinos and MOJAVE AGN

open access: yesThe Astrophysical Journal
Active galactic nuclei (AGN) are prime candidate sources of the high-energy, astrophysical neutrinos detected by IceCube. This is demonstrated by the real-time multimessenger detection of the blazar TXS 0506+056 and the recent evidence of neutrino ...
R. Abbasi   +423 more
doaj   +1 more source

High Energy Cosmic Ray and Neutrino Astronomy [PDF]

open access: yes, 2011
Cosmic-rays with energies exceeding 10^{19} eV are referred to as Ultra High Energy Cosmic Rays (UHECRs). The sources of these particles and their acceleration mechanism are unknown, and for many years have been the issue of much debate. The first part of this review describes the main constraints, that are implied by UHECR observations on the ...
openaire   +2 more sources

Enhanced four-body decays of charged Higgs bosons into off-shell pseudoscalar Higgs and $$W^\pm $$ W ± boson pairs in a lepton-specific 2-Higgs doublet model

open access: yesEuropean Physical Journal C: Particles and Fields
We study the time-honoured decay $$H^\pm \rightarrow A W^\pm $$ H ± → A W ± but for the first time, we do so for the case of both A and $$W^\pm $$ W ± being off-shell, therefore computing a $$1\rightarrow 4$$ 1 → 4 body decay.
Stefano Moretti, Muyuan Song
doaj   +1 more source

Implications of the weak gravity conjecture on charge, kinetic mixing, the photon mass, and more

open access: yesNuclear Physics B
We investigate several phenomenological implications of the Weak Gravity Conjecture (WGC). We find that the WGC implies that the SM neutrinos must be electrically neutral, that the electric charge in the SM must be quantized, and that the photon must be ...
Fayez Abu-Ajamieh   +2 more
doaj   +1 more source

The generalized scalar weak gravity conjecture and its implications

open access: yesPhysics Letters B
We propose a generalized formulation of the Scalar Weak Gravity Conjecture (SWGC) based on the analogy with the derivation of the Gauge Weak Gravity Conjecture (GWGC).
Fayez Abu-Ajamieh   +2 more
doaj   +1 more source

High energy neutrino astronomy [PDF]

open access: yesProceedings of Ettore Majorana's legacy and the Physics of the XXI century — PoS(EMC2006), 2007
openaire   +1 more source

Status of High-Energy Neutrino Astronomy

open access: yesJournal of Physics: Conference Series, 2015
With the recent discovery of high-energy neutrinos of extra-terrestrial origin by the IceCube neutrino observatory, neutrino-astronomy is entering a new era. This review will cover currently operating open water/ice neutrino telescopes, the latest evidence for a flux of extra-terrestrial neutrinos and current efforts in the search for steady and ...
openaire   +3 more sources

ALP-assisted strong first-order electroweak phase transition and baryogenesis

open access: yesJournal of High Energy Physics
Axion-like particles (ALPs) can be naturally lighter than the electroweak scale. We consider an ALP that couples to the Standard Model Higgs to achieve the strong first-order electroweak phase transition.
Keisuke Harigaya, Isaac R. Wang
doaj   +1 more source

Ultrahigh-energy gamma-ray emission associated with black hole-jet systems. [PDF]

open access: yesNatl Sci Rev
Cao Z   +316 more
europepmc   +1 more source

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