Results 11 to 20 of about 2,345 (163)

Status of DVMP, DVCS and GPDs [PDF]

open access: yesEPJ Web of Conferences, 2015
The analysis of exclusive meson leptoproduction (DVMP) within the handbag approach is reviewed and the parametrization of the generalized parton distributions (GPDs) is discussed in some detail with the main interest focused of the GPDs H and E ...
Kroll P.
doaj   +2 more sources

Chiral Odd GPDs

open access: yesEPJ Web of Conferences, 2015
Nucleon spin structure, transversity and the tensor charge are of central importance to understanding the role of QCD in hadronic physics. A new approach to measuring orbital angular momenta of quarks in the proton via twist 3 GPDs is shown.
Goldstein Gary R.   +2 more
doaj   +2 more sources

Gluon GPDs and exclusive photoproduction of quarkonium in forward region

open access: yesEuropean Physical Journal C: Particles and Fields, 2019
Forward photoproduction of $$J/\psi $$ J/ψ can be used to extract generalized parton distributions (GPDs) of gluons. We analyze the process at twist-3 level and study relevant classifications of twist-3 gluon GPDs.
Z. L. Cui, M. C. Hu, J. P. Ma
doaj   +2 more sources

Neuroimaging of the ictal-interictal continuum: Where do we stand? A systematic review and meta-analysis of current evidence. [PDF]

open access: yesEpilepsia Open
Abstract Objective Patterns within the ictal–interictal continuum (IIC) are frequently encountered in critically ill patients undergoing continuous electroencephalographic studies and may reflect ongoing ictal activity or secondary brain injury. Peri‐ictal neuroimaging abnormalities (PNA) have been described in association with status epilepticus (SE),
Tsalouchidou PE   +10 more
europepmc   +2 more sources

GPDs in asymmetric frames [PDF]

open access: yes, 2023
It is often taken for granted that Generalized Parton Distributions (GPDs) are defined in the "symmetric" frame, where the transferred momentum is symmetrically distributed between the incoming/outgoing hadrons.
Metz, Andreas   +9 more
core   +2 more sources

Off-shell generalized parton distributions and form factors of the pion

open access: yesPhysics Letters B, 2023
Off-shell effects in generalized parton distributions (GPDs) of the pion, appearing, e.g., in the Sullivan process, are considered. Due to the lack of crossing symmetry, the moments of GPDs involve also odd powers of the skewness (longitudinal momentum ...
Wojciech Broniowski   +2 more
doaj   +1 more source

Presence of generalized periodic discharges and hospital mortality [PDF]

open access: yesArquivos de Neuro-Psiquiatria, 2020
Background: Generalized periodic discharges (GPDs) are rare patterns that can be found in long-term electroencephalographic monitoring in critical patients.
Larissa MIYASHIRO   +2 more
doaj   +1 more source

Generalized quasi parton distributions in a diquark spectator model

open access: yesPhysics Letters B, 2019
Recently the concept of quasi parton distributions (quasi-PDFs) for hadrons has been proposed. Quasi-PDFs are defined through spatial correlation functions and as such can be computed numerically using quantum chromodynamics on a four-dimensional lattice.
Shohini Bhattacharya   +2 more
doaj   +1 more source

A Computational Approach to Confidence Intervals and Testing for Generalized Pareto Index Using the Greenwood Statistic

open access: yesRevstat Statistical Journal, 2023
The generalized Pareto distributions (GPDs) play an important role in the statistics of extremes. We point various problems with the likelihood-based inference for the index parameter α of the GPDs, and develop alternative testing strategies, which do ...
Marek Arendarczyk   +2 more
doaj   +1 more source

Generalized periodic discharges with triphasic morphology [PDF]

open access: yesJournal of Neurocritical Care, 2019
Generalized periodic discharges (GPDs) with triphasic morphology are an electroencephalographic (EEG) pattern traditionally associated with encephalopathy and coma, although they have been observed in a wide array of neurological disorders.
J. Andrew Hartshorn, Brandon Foreman
doaj   +1 more source

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