Results 71 to 80 of about 220,545 (228)

Observation and investigation of πK atoms

open access: yesEPJ Web of Conferences, 2017
There is accurate relation between lifetime of atoms, consisting of pion and kaon, and a difference of S-wave pion kaon scattering length with isospin 1/2 and 3/2: |a1/2 - a3/2 |. This difference is predicted by low energy QCD.
Yazkov Valeriy
doaj   +1 more source

Analysis of Exotic Hybrid eta pion, eta-prime pion Decays

open access: yes, 2004
Investigations of the mass and decays of the exotic hybrid are reviewed, including calculation of the pion1 to eta pion, eta-prime pion decay widths within the QCD sum rules technique.
Steele, T. G., Zhang, Ailin
core   +1 more source

Generalized parton distributions of pion for non-zero skewness in AdS/QCD

open access: yesNuclear Physics B, 2018
We study the generalized parton distributions (GPDs) of pion for non-zero skewness by considering the leading |qq¯〉 Fock state component. Inspired from AdS/QCD light-front wave functions, we calculate the pion GPDs.
Navdeep Kaur   +3 more
doaj  

Pion wave-function as a bound system in 3 + 1 dimensional QCD

open access: yesResults in Physics, 2017
We investigate the Bethe-Salpeter-like amplitude in 3 + 1 dimensions. This involves a system comprising a quark and an antiquark combined by gauge fields to satisfy gauge invariance. We derive the equation of motion for this system and construct a series
Teruo Kurai
doaj  

Management of ischemic optic neuropathies

open access: yesIndian Journal of Ophthalmology, 2011
Ischemic optic neuropathies (IONs) consist primarily of two types: anterior ischemic optic neuropathy (AION) and posterior ischemic optic neuropathy (PION).
Hayreh Sohan
doaj  

Proton and pion distribution functions in counterpoint

open access: yesPhysics Letters B, 2022
Working with proton and pion valence distribution functions (DFs) determined consistently at the same, unique hadron scale and exploiting the possibility that there is an effective charge which defines an evolution scheme for DFs that is all-orders exact,
Ya Lu   +4 more
doaj  

Equivalence of Nonstatic Two-Pion-Exchange Nucleon-Nucleon Potentials

open access: yes, 1999
Off-shell aspects of the one-pion-exchange potential and their relationship to different forms of the nonstatic (subleading-order) chiral two-pion-exchange nucleon-nucleon potential are discussed.
A. Manohar   +46 more
core   +3 more sources

Charge dependence of the pion-nucleon coupling constant

open access: yesЯдерна фізика та енергетика, 2015
On the basis of the Yukawa potential we study the pion-nucleon coupling constants for the neutral and charged pions assuming that nuclear forces at low energies are mainly determined by the exchange of virtual pions.
V. A. Babenko, N. M. Petrov
doaj  

Two-pion bound state in sigma channel at finite temperature

open access: yes, 2004
We study how we can understand the change of the spectral function and the pole location of the correlation function for sigma at finite temperature, which were previously obtained in the linear sigma model with a resummation technique called optimized ...
Munehisa Ohtani   +4 more
core   +1 more source

Le vote blanc et nul en Wallonie : analyse écologique et individuelle

open access: yesBelgeo, 2010
Blank and null votes are probably the electoral behaviour least taken into account by electoral studies. Though, in a democracy like Belgium, these votes are far from negligible and offer an untypical geography which underlines border areas.
Geoffrey Pion
doaj   +1 more source

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