Results 101 to 110 of about 210,176 (213)
Annals 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
Effects of the Pion-Pion Resonance and the Three-Pion Resonance or Bound State on Neutral-Pion Decay [PDF]
Physical Review, 1961 The dispersion method was applied to the problem of neutral-pion decay. lt is shown that a pion-pion P-wave resonance can produce a large effect in the decay matrix element. The contribution is related to the semifundamental constant which determines the rate of photoproduction of pions from pions.
openaire +3 more sources
Dispersion relation for hadronic light-by-light scattering: two-pion contributions
Journal 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
Coherent Pion Production in Neutrino Nucleus Scattering
, 2016 In this article, we study the coherent pion production in neutrino-nucleus interaction in the resonance region using the formalism based on partially conserved axial current (PCAC) theorem which relates the neutrino-nucleus cross section to the pion ...
Kumar, Vineet +3 more
core +1 more source
Pion dissociation and Levinson's theorem in hot PNJL quark matter
, 2013 Pion dissociation by the Mott effect in quark plasma is described within the generalized Beth-Uhlenbeck approach on the basis of the PNJL model which allows for a unified description of bound, resonant and scattering states.
Blaschke, D. +3 more
core +1 more source
Chiral extrapolation of the sigma resonance
Physics Letters B, 2018 We analyze results on isoscalar ππ scattering from a Nf=2+1 lattice QCD calculation by the HadronSpectrum collaboration by re-summing the two-flavor chiral scattering amplitude of the next-to-leading order in the so-called inverse amplitude method.
Michael Döring, Bin Hu, Maxim Mai
doaj +1 more source
QCD Sum Rules for Heavy Flavors [PDF]
, 2000 We give a short review of QCD sum rule results for B and D mesons and Lambda_Q and Sigma_Q baryons. We focus mainly on recent developments concerning semileptonic B->pion and D->pion transitions, pion couplings to heavy hadrons, decay constants and ...
Rückl, R., Weinzierl, S., Yakovlev, O.
core +1 more source
Management of ischemic optic neuropathies
Indian 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
PCAC Relation and Pion Production-Absorption in Nuclei
, 2004 Nuclear PCAC relation is studied in the framework of the effective theory of nuclear interaction, in which the interaction of real pion production-absorption is expressed by many-body operators, and does not include the one-nucleon operator as was ...
Nogi, T., Ohtsubo, H., Sato, T.
core
Chiral dynamics and the growth of the nucleon's gluonic transverse size at small x
, 2003 We study the distribution of gluons in transverse space in the nucleon at moderately small x (~10^{-2}). At large transverse distances (impact parameters) the gluon density is generated by the 'pion cloud' of the nucleon, and can be calculated in terms ...
A.D. Martin +45 more
core +1 more source