Nucleon tensor charges in the SU(2) chiral quark-soliton model

Journal Article · Wed May 01 04:00:00 EDT 1996 · Physical Review, D

DOI:https://doi.org/10.1103/PhysRevD.53.R4715· OSTI ID:284093

Kim, H ^[1]; Polyakov, M V ^[2]; Goeke, K ^[1]

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1. Institute for Theoretical Physics II, P.O. Box 102148, Ruhr-University Bochum, D-44780 Bochum (Germany)
2. Petersburg Nuclear Physics Institute, Gatchina, St. Petersburg 188350 (Russia)

We investigate the singlet {ital g}{sub {ital T}}{sup (0)} and isovector {ital g}{sub {ital T}}{sup (3)} tensor charges of the nucleon, which are deeply related to the first moment of the leading twist transversity quark distribution {ital h}{sub 1}({ital x}), in the SU(2) chiral quark-soliton model. With rotational {ital O}(1/{ital N}{sub {ital c}}) corrections taken into account, we obtain {ital g}{sub {ital T}}{sup (0)}=0.69 and {ital g}{sub {ital T}}{sup (3)}=1.45 at a low normalization point of several hundreds MeV. Within the same approximation and parameters the model yields {ital g}{sub {ital A}}{sup (0)}=0.36, {ital g}{sub {ital A}}{sup (3)}=1.21 for axial charges and a correct octet-decuplet mass splitting. We show how the chiral quark-soliton model interpolates between the nonrelativistic quark model and the Skyrme model. {copyright} {ital 1996 The American Physical Society.}

• OSTI ID: 284093
• Journal Information: Physical Review, D, Journal Name: Physical Review, D Journal Issue: 9 Vol. 53; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
CHARGES
CHIRAL SYMMETRY
CORRECTIONS
NUCLEONS
QUARK MODEL
SKYRME POTENTIAL
SOLITONS
SU-2 GROUPS
TENSORS