Quark distribution functions in the chiral quark-soliton model: Cancellation of quantum anomalies

• Type: Article in International Scientific Journal
• Date: 2001

Authors

Goeke, K (Author) Other; Pobylitsa, PV (Author) Other; Polyakov, MV (Author) Other; Schweitzer, P (Author) Other; Diana Urbano (Author) FEUP

Journal

The Journal is awaiting validation by the Administrative Services.

Title: ACTA PHYSICA POLONICA B

Vol. 32

Pages: 1201-1223

ISSN: 0587-4254

Indexing

ISI Web of Knowledge - 42 Citations

Scopus - 42 Citations

Other information

Authenticus ID: P-000-VW3

Abstract (EN): In the framework of the chiral quark-soliton model of the nucleon we investigate the properties of the polarized quark distribution. In particular we analyse the so called anomalous difference between the representations for the quark distribution functions in terms of occupied and of non-occupied quark states. By an explicit analytical calculation it is shown that this anomaly is absent in the polarized isoscalar distribution Deltau + Deltad, which is ultraviolet finite. In the; case of the polarized isovector quark distribution Deltau - Deltad the anomaly can be cancelled by a Pauli-Villars subtraction which is also needed for the regularization of the ultraviolet divergence.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 23