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Nonforward parton distributions of the pion within an effective single instanton approximation

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Nonforward parton distributions of the pion within an effective single instanton approximation

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dc.contributor.author	Anikin, I. V.
dc.contributor.author	Dorokhov, Alexander E.
dc.contributor.author	Maximov, A.E.
dc.contributor.author	Tomio, Lauro
dc.contributor.author	Vento Torres, Vicente
dc.date.accessioned	2015-05-12T10:17:25Z
dc.date.available	2015-05-12T10:17:25Z
dc.date.issued	2000
dc.identifier.citation	Anikin, I. V. Dorokhov, Alexander E. Maximov, A.E. Tomio, Lauro Vento Torres, Vicente 2000 Nonforward parton distributions of the pion within an effective single instanton approximation Nuclear Physics B 678 1-2 175 186
dc.identifier.uri	http://hdl.handle.net/10550/43701
dc.description.abstract	We develop a relativistic quark model for pion structure, which incorporates the non-trivial structure of the vacuum of Quantum Chromodynamics as modelled by instantons. Pions are boundstates of quarks and the strong quark-pion vertex is determined from an instanton induced effective lagrangian. The interaction of the constituents of the pion with the external electromagnetic field is introduced in gauge invariant form. The parameters of the model, i.e., effective instanton radius and constituent quark masses, are obtained from the vacuum expectation values of the lowest dimensional quark and gluon operators and the low-energy observables of the pion. We apply the formalism to the calculation of the pion form factor by means of the isovector nonforward parton distributions and find agreement with the experimental data.
dc.language.iso	eng
dc.relation.ispartof	Nuclear Physics B, 2000, vol. 678, num. 1-2, p. 175-186
dc.subject	Física
dc.title	Nonforward parton distributions of the pion within an effective single instanton approximation
dc.type	journal article	es_ES
dc.date.updated	2015-05-12T10:17:26Z
dc.identifier.doi	10.1016/S0375-9474(00)00320-1
dc.identifier.idgrec	075378
dc.rights.accessRights	open access	es_ES