Results 21 to 30 of about 21,959 (162)

Next-to-leading power threshold effects for inclusive and exclusive processes with final state jets

open access: yesJournal of High Energy Physics, 2020
It is well known that cross-sections in perturbative QCD receive large corrections from soft and collinear radiation, which can be resummed to all orders in the coupling.
Melissa van Beekveld   +3 more
doaj   +1 more source

An analytic analysis of the pion decay constant in three-flavoured chiral perturbation theory

open access: yesEuropean Physical Journal C: Particles and Fields, 2017
A representation of the two-loop contribution to the pion decay constant in SU(3) chiral perturbation theory is presented. The result is analytic up to the contribution of the three (different) mass sunset integrals, for which an expansion in their ...
B. Ananthanarayan   +2 more
doaj   +1 more source

High energy neutrino astronomy

open access: yesNuclear Physics B - Proceedings Supplements, 2002
Abstract After a long period of development, high energy neutrino astrophysics is approaching a level of sensitivity which reaches below the upper bounds on extraterrestrial neutrino fluxes derived from observed fluxes of cosmics rays and gamma rays.
openaire   +3 more sources

RECENT DEVELOPMENTS IN ULTRA-HIGH ENERGY NEUTRINO ASTRONOMY

open access: yesActa Polytechnica, 2013
We outline the current situation in ultrahigh energy (UHE) cosmic ray physics, pointing out the remaining problems, in particular the puzzle concerning the origin of the primary radiation and the role of neutrino astronomy for locating the sources ...
Peter K. F. Grieder
doaj   +1 more source

Rényi divergences from Euclidean quenches

open access: yesJournal of High Energy Physics, 2020
We study the generalisation of relative entropy, the Rényi divergence D α (ρ∥ρ β ) in 2d CFTs between an excited state density matrix ρ, created by deforming the Hamiltonian, and the thermal density matrix ρ β .
Barsha G. Chowdhury   +2 more
doaj   +1 more source

High energy gamma-ray astronomy

open access: yesNuclear Physics B - Proceedings Supplements, 2005
10 pages, 12 figures, to appear as Plenary Paper, Proceedings of the Eigth International Workshop on Topics in Astroparticle and Underground Physics (TAUP2003), University of Washington, Seattle, USA, 5-9 September 2003. High quality versions of the manuscript (ps-file) and of figures 2 and 12 can be found at http://edoc.mpg.de/60181.
openaire   +5 more sources

Very High Energy Gamma‐Ray Astronomy

open access: yesPublications of the Astronomical Society of the Pacific, 1999
We present a review of the current status of very high energy gamma-ray astronomy. The development of the atmospheric Cherenkov imaging technique for ground-based gamma-ray astronomy has led to a rapid growth in the number of observatories. The detection of TeV gamma rays from Active Galactic Nuclei was unexpected and is providing new insights into the
Catanese, Michael, Weekes, Trevor C.
openaire   +2 more sources

High-energy neutrino astronomy

open access: yesAstrophysics and Space Sciences Transactions, 2011
Neutrinos constitute a unique probe since they escape from their sources, travel undisturbed on cosmological distances and are produced in high-energy (HE) hadronic processes. In particular they would allow a direct detection and unambiguous identification of the acceleration sites of HE baryonic cosmic rays (CR), which remain unknown.
openaire   +4 more sources

iid2022: a workshop on statistical methods for event data in astronomy

open access: yesFrontiers in Astronomy and Space Sciences, 2023
We review the iid2022 workshop on statistical methods for X-ray and γ-ray astronomy and high–energy astrophysics event data in astronomy, held in Guntersville, AL, on Nov. 15–18 2022.
Eric D. Feigelson   +1 more
doaj   +1 more source

High Energy Neutrino Astronomy

open access: yes, 2021
Opening Plenary Talk at the "XIX International Workshop on Neutrino Telescopes" on line - 18-26 February ...
openaire   +1 more source

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