A5093536446- Particle physics theoretical and experimental studies
- Dark Matter and Cosmic Phenomena
- Cosmology and Gravitation Theories
- Noncommutative and Quantum Gravity Theories
- Black Holes and Theoretical Physics
- Graphite, nuclear technology, radiation studies
IMT Atlantique
2023-2025
Laboratoire de Physique Subatomique et des Technologies Associées
2023-2025
Nantes Université
2023-2024
Institut National de Physique Nucléaire et de Physique des Particules
2023-2024
Centre National de la Recherche Scientifique
2023-2024
A bstract Hot axions, thermally produced in the Early Universe, would contribute to dark radiation and are thus subject present future constraints from N eff . In this paper we quantify contribution its uncertainty models with axion-gluon couplings thermal dynamics above QCD transition. more detail, determine leading-order axion production rate for momenta of order temperature adopting three different schemes incorporation collective soft gluons. We show how these extrapolate differently...
Hot axions, thermally produced in the Early Universe, would contribute to dark radiation and are thus subject present future constraints from $N_{\rm eff}$. In this paper we quantify contribution eff}$ its uncertainty models with axion-gluon couplings thermal dynamics above QCD transition. more detail, determine leading-order axion production rate for momenta of order temperature adopting three different schemes incorporation collective soft gluons. We show how these extrapolate differently...
New calculations for the kinematics of photon decay to fermions in vacuo under an isotropic violation Lorentz invariance (LV), parameterized by Standard-Model Extension (SME), are presented this paper and used interpret prompt production LHC data. The measurement inclusive at Run 2, with photons observed up a transverse energy 2.5 TeV, provides lower bound $\tildeκ_{\mathrm{tr}} > -1.06 \times 10^{-13}$ on coefficient $\tildeκ_{\mathrm{tr}}$ 95% confidence level. This result improves over...
New calculations for the kinematics of photon decay to fermions in vacuo under an isotropic violation Lorentz invariance (LV), parametrized by standard-model extension, are presented this Letter and used interpret prompt production LHC data. The measurement inclusive at Run 2, with photons observed up a transverse energy 2.5 TeV, provides lower bound κ[over ˜]_{tr}>-1.06×10^{-13} on coefficient ˜]_{tr} 95% confidence level. This result improves over previous from hadron colliders factor 55....