Results 11 to 20 of about 5,029 (167)
Achieving GPT-4o level performance in astronomy with a specialized 8B-parameter large language model [PDF]
Scientific ReportsAstroSage-Llama-3.1-8B is a domain-specialized natural-language AI assistant tailored for research in astronomy, astrophysics, cosmology, and astronomical instrumentation.
Tijmen de Haan +8 more
doaj +2 more sources
Ultra High Energy Cosmic Ray Source Models: Successes, Challenges and General Predictions [PDF]
EPJ Web of Conferences, 2023 Understanding the acceleration of Ultra High Energy Cosmic Rays is one of the great challenges of contemporary astrophysics. In this short review, we summarize the general observational constraints on their composition, spectrum and isotropy which ...
Globus Noémie, Blandford Roger
doaj +1 more source
Electroweak splitting functions and high energy showering
Journal of High Energy Physics, 2017 We derive the electroweak (EW) collinear splitting functions for the Standard Model, including the massive fermions, gauge bosons and the Higgs boson. We first present the splitting functions in the limit of unbroken SU(2) L × U(1) Y and discuss their ...
Junmou Chen, Tao Han, Brock Tweedie
doaj +1 more source
Heavy neutral leptons at the Electron-Ion Collider
Journal of High Energy Physics, 2023 The future Electron-Ion Collider (EIC) at Brookhaven National Laboratory, along with its primary capacity to elucidate the nuclear structure, will offer new opportunities to probe physics beyond the Standard Model coupled to the electroweak sector. Among
Brian Batell +3 more
doaj +1 more source
Keeping it simple: simplified frameworks for long-lived particles at neutrino facilities
Journal of High Energy Physics, 2023 Modern-day accelerator neutrino facilities are excellent venues for searches for new-physics particles. Many distinct new-physics models predict overlapping signatures and phenomenology in these experiments.
Brian Batell +2 more
doaj +1 more source
Structure of Chern-Simons scattering amplitudes from topological equivalence theorem and double-copy
Journal of High Energy Physics, 2022 We study the mechanism of topological mass-generation for 3d Chern-Simons (CS) gauge theories, where the CS term can retain the gauge symmetry and make gauge boson topologically massive.
Yan-Feng Hang, Hong-Jian He, Cong Shen
doaj +1 more source
Journal of High Energy Physics, 2020 We investigate simple extensions of the Mirror Twin Higgs model in which the twin color gauge symmetry and the discrete ℤ2 mirror symmetry are spontaneously broken. This is accomplished in a minimal way by introducing a single new colored triplet, sextet,
Brian Batell +2 more
doaj +1 more source
Massive color-kinematics duality and double-copy for Kaluza-Klein scattering amplitudes
Journal of High Energy Physics, 2023 We study the structure of scattering amplitudes of massive Kaluza-Klein (KK) states under toroidal compactification. We present a shifting method to quantitatively derive the scattering amplitudes of massive KK gauge bosons and KK gravitons from the ...
Yao Li, Yan-Feng Hang, Hong-Jian He
doaj +1 more source
Journal of High Energy Physics, 2018 In this paper we study the fragmentation of a parton into a jet containing a heavy quark. When heavy quarks are involved in a jet, the quark mass can lead to a numerically significant correction to the jet cross section and its substructure.
Lin Dai, Chul Kim, Adam K. Leibovich
doaj +1 more source
Hybrid renormalization for quasi distribution amplitudes of a light baryon
Journal of High Energy Physics, 2023 We develop a hybrid scheme to renormalize quasi distribution amplitudes of a light baryon on the lattice, which combines the self-renormalization and ratio scheme.
Chao Han +3 more
doaj +1 more source