Zobrazeno 1 - 10
of 485
pro vyhledávání: '"Zhou, Yu‐Feng"'
In this study, we explore how the extragalactic background light (EBL) absorption effect influences the photon to axionlike particle (ALP) conversions from the very-high-energy gamma-ray spectral irregularities. For our analysis, we select two well-k
Externí odkaz:
http://arxiv.org/abs/2410.14791
Autor:
Li, Hai-Jun, Zhou, Yu-Feng
We introduce a novel level crossing in the mass mixing between two QCD axions, one canonical QCD axion and one $Z_{\mathcal N}$ QCD axion. The level crossing can take place at the QCD phase transition critical temperature or slightly before it, depen
Externí odkaz:
http://arxiv.org/abs/2408.00267
Markarian 421 is a well-known nearby BL Lac blazar at the redshift $z=0.031$. Many previous works were investigated to constrain the axion-photon coupling from its TeV gamma-ray observations, showing the upper limit on the coupling constant $g_{a\gam
Externí odkaz:
http://arxiv.org/abs/2406.00387
Publikováno v:
Phys. Rev. D 109, 064072(2024)
We explore the new physics phenomena of gravidynamics governed by the inhomogeneous spin gauge symmetry based on the gravitational quantum field theory. Such a gravidynamics enables us to derive the generalized Einstein equation and an equation beyon
Externí odkaz:
http://arxiv.org/abs/2403.17619
Autor:
Huang, Jia-Zhi, Zhou, Yu-Feng
Cosmic-ray (CR) positrons are relatively rare due to its secondary origin and thus sensitive to exotic contributions. Primordial black holes (PBHs) with masses above $\sim 5\times10^{14}\,\mathrm{g}$ can be stable sources of CR positrons due to Hawki
Externí odkaz:
http://arxiv.org/abs/2403.04987
We present the limits on photon to axionlike particle (ALP) coupling from the 10-year period observations of the TeV BL Lacertae blazar 1ES 1215+303 (with redshift $z=0.130$). The contemporaneous gamma-ray spectra are measured by the collaborations F
Externí odkaz:
http://arxiv.org/abs/2312.05555
The even light QCD axion called the $Z_{\mathcal N}$ axion can both solve the strong CP problem and account for the dark matter (DM). We point out that the single and double level crossings can naturally take place in the mass mixing between the $Z_{
Externí odkaz:
http://arxiv.org/abs/2310.02126
Halo dark matter (DM) particles could lose energy due to the scattering off nuclei within the Earth before reaching the underground detectors of DM direct detection experiments. This Earth shielding effect can result in diurnal modulation of the DM-i
Externí odkaz:
http://arxiv.org/abs/2307.12820
The supermassive black holes (SMBHs) are ubiquitous in the center of galaxies, although the origin of their massive seeds is still unknown. In this paper, we investigate the SMBHs formation from the QCD axion bubbles. In this case, the primordial bla
Externí odkaz:
http://arxiv.org/abs/2304.00939
Publikováno v:
JCAP03(2023)051
Cosmic-ray (CR) antihelium is an important probe for the indirect search of dark matter (DM) annihilation in the Galaxy. However, due to stringent constraints from the measurements of CR antiprotons and $\gamma$-rays, the flux of CR antihelium from t
Externí odkaz:
http://arxiv.org/abs/2212.02539