Zobrazeno 1 - 10
of 120
pro vyhledávání: '"Fiorillo, Damiano F. G."'
The cores of active galactic nuclei (AGN) are potential accelerators of 10-100 TeV cosmic rays, in turn producing high-energy neutrinos. This picture was confirmed by the compelling evidence of a TeV neutrino signal from the nearby active galaxy NGC
Externí odkaz:
http://arxiv.org/abs/2407.01678
Autor:
Telalovic, Bernanda, Fiorillo, Damiano F. G., Martínez-Miravé, Pablo, Vitagliano, Edoardo, Bustamante, Mauricio
Many particles predicted by extensions of the Standard Model feature interactions with neutrinos, e.g., Majoron-like bosons $\phi$. If the mass of $\phi$ is larger than about 10 keV, they can be produced abundantly in the core of the next galactic co
Externí odkaz:
http://arxiv.org/abs/2406.15506
Neutrino-neutrino refraction leads to collective flavor evolution that can include fast flavor conversion, an ingredient still missing in numerical simulations of core-collapse supernovae. We provide a theoretical framework for the linear regime of t
Externí odkaz:
http://arxiv.org/abs/2406.06708
Since neutrinos have mass differences, they could decay into one another. But their lifetimes are likely long, even when shortened by new physics, so decay likely impacts neutrinos only during long trips. This makes high-energy astrophysical neutrino
Externí odkaz:
http://arxiv.org/abs/2405.14826
We revisit supernova (SN) bounds on a hidden sector consisting of millicharged particles $\chi$ and a massless dark photon. Unless the self-coupling is fine-tuned to be small, rather than exiting the SN core as a gas, the particles form a relativisti
Externí odkaz:
http://arxiv.org/abs/2404.07714
A dense neutrino gas exhibiting angular crossings in the electron lepton number is unstable and develops fast flavor conversions. Instead of assuming an unstable configuration from the onset, we imagine that the system is externally driven toward ins
Externí odkaz:
http://arxiv.org/abs/2403.12189
Publikováno v:
Phys.Rev.Lett. 133 (2024) 2, 021002
Flavor-dependent neutrino transport is described by a well-known kinetic equation for occupation-number matrices in flavor space. However, as an overlooked theoretical problem, we show that in the inhomogeneous case, neutrino-neutrino refractive ener
Externí odkaz:
http://arxiv.org/abs/2401.05278
The paradigm-changing possibility of collective neutrino-antineutrino oscillations was recently advanced in analogy to collective flavor oscillations. However, the amplitude for the backward scattering process $\nu_{\mathbf{p}_1}\overline\nu_{\mathbf
Externí odkaz:
http://arxiv.org/abs/2401.02478
Autor:
Liu, Qinrui, Fiorillo, Damiano F. G., Argüelles, Carlos A., Bustamante, Mauricio, Song, Ningqiang, Vincent, Aaron C.
The flavor composition of TeV--PeV astrophysical neutrinos, i.e., the proportion of neutrinos of different flavors in their flux, is a versatile probe of high-energy astrophysics and fundamental physics. Because flavor identification is challenging a
Externí odkaz:
http://arxiv.org/abs/2312.07649
Publikováno v:
Phys.Rev.D 109 (2024) 6, 063021
In dense astrophysical environments, notably core-collapse supernovae and neutron star mergers, neutrino-neutrino forward scattering can spawn flavor conversion on very short scales. Scattering with the background medium can impact collective flavor
Externí odkaz:
http://arxiv.org/abs/2312.07612