Results 61 to 70 of about 220,545 (228)

Postoperative posterior ischemic optic neuropathy (PION) following right pterional meningioma surgery

open access: yesAnnals of Indian Academy of Neurology, 2016
Postoperative visual loss (POVL) is an unpredictable complication of nonocular surgeries. Posterior ischemic optic neuropathy (PION) is particularly feared in spinal surgeries in the prone position.
Boby Varkey Maramattom   +3 more
doaj   +1 more source

Influence of quark boundary conditions on the pion mass in finite volume

open access: yes, 2005
We calculate the mass shift for the pion in a finite volume with renormalization group (RG) methods in the framework of the quark-mesons model. In particular, we investigate the importance of the quark effects on the pion mass. As in lattice gauge theory,
B. Klein   +4 more
core   +1 more source

L'abstentionnisme électoral en Belgique : données individuelles et agrégées à Charleroi

open access: yesL'Espace Politique, 2011
Electoral absenteeism is a common studied subject in the Anglo-Saxon and French scientific world. But researches about it in Belgium, where voting is compulsory are not far from being null.
Geoffrey Pion
doaj   +1 more source

Determination of the pion distribution amplitude

open access: yes, 2013
Right now, we have not enough knowledge to determine the hadron distribution amplitudes (DAs) which are universal physical quantities in the high energy processes involving hadron for applying pQCD to exclusive processes.
Huang, Tao, Wu, Xing-Gang, Zhong, Tao
core   +1 more source

Dalitz plot studies of D0 → KS0π+π− decays

open access: yesEPJ Web of Conferences, 2012
The availaible data on the D0 → KS0π+π− decays are analysed in the framework of the quasi two-body QCD factorization approximation. The annihilation, via Wexchange, amplitudes are added to the weak-decay tree amplitudes.
Loiseau B.   +4 more
doaj   +1 more source

PION–PION SCATTERING ABOVE RESONANCES [PDF]

open access: yesMeson 2002, 2003
We model large angle intermediate energy pion-pion scattering by the pQCD two-gluon (2g) exchange contribution and discuss the onset of the dominance of the Glauber-Gribov-Landshoff (GGL) component. The pQCD 2g exchange contribution becomes substantial already at $|t|\sim$ 1 GeV^{2}, but the pQCD exchange dominance is deferred to $|t|\sim$ 3 GeV^{2 ...
openaire   +3 more sources

Pion and Kaon Polarizabilities at CERN COMPASS [PDF]

open access: yes, 2003
The electric alpha and magnetic beta pion Compton polarizabilities characterize the pion's deformation in the electromagnetic field of the gamma during gamma-pi Compton scattering.
Moinester, Murray
core   +1 more source

Decay Widths of X(1835) as Nucleon-Antinucleon Bound State

open access: yes, 2012
Partial decay widths of various decay channels of the X(1835) are evaluated in the 3P0 quark model, assuming that the X(1835) is a nucleon-antinucleon bound state.
Faessler, Amand   +3 more
core   +1 more source

Dispersion relation for hadronic light-by-light scattering: two-pion contributions

open access: yesJournal of High Energy Physics, 2017
In this third paper of a series dedicated to a dispersive treatment of the hadronic light-by-light (HLbL) tensor, we derive a partial-wave formulation for two-pion intermediate states in the HLbL contribution to the anomalous magnetic moment of the muon (
Gilberto Colangelo   +3 more
doaj   +1 more source

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