Quark Distribution in Pion within Instanton Liquid Model
| dc.creator | Dorokhov, A. E. | |
| dc.creator | Tomio, Lauro | |
| dc.date | 1998-03-12 | |
| dc.date | 1998-10-13 | |
| dc.date.accessioned | 2026-07-07T04:03:36Z | |
| dc.date.available | 2026-07-07T04:03:36Z | |
| dc.description | The leading-twist valence-quark distribution function in the pion is obtained at a low normalization scale of an order of the inverse average size of an instanton $ρ_c$. The momentum dependent quark mass and the quark-pion vertex are constructed in the framework of the instanton liquid model, using a gauge invariant approach. The parameters of instanton vacuum, the effective instanton radius and quark mass, are related to the vacuum expectation values of the lowest dimension quark-gluon operators and to the pion low energy observables. An analytic expression for the quark distribution function in the pion for a general vertex function is derived. The results are QCD evolved to higher momentum-transfer values, and reasonable agreement with phenomenological analyzes of the data on parton distributions for the pion is found. | |
| dc.description | 27 pages, latex, 5 figures | |
| dc.identifier | https://arxiv.org/abs/hep-ph/9803329 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/9803329 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/47728 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Quark Distribution in Pion within Instanton Liquid Model | |
| dc.type | text |