Spin content of the nucleon in the chiral bag

A. Hosaka; W. Weise

doi:10.1016/0370-2693(89)90438-3

Spin content of the nucleon in the chiral bag

A. Hosaka, W. Weise

University of Regensburg

Research output: Contribution to journal › Article › peer-review

7 Scopus citations

Abstract

The spin content of the nucleon is studied in the chiral bag model. U(1)_A symmetry and its breaking is incorporated by the massive η' meson outside the bag. The Coriolis coupling between the η' and the quarks is treated in the framework of the semi-classical cranking method. We confirm previously obtained results that the quark spin content of the nucleon depends rather strongly on the bag radius R. The EMC data indicate a preference for small bag radii in the chiral bag.

Original language	English
Pages (from-to)	442-446
Number of pages	5
Journal	Physics Letters B
Volume	232
Issue number	4
DOIs	https://doi.org/10.1016/0370-2693(89)90438-3
State	Published - 14 Dec 1989
Externally published	Yes

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title = "Spin content of the nucleon in the chiral bag",

abstract = "The spin content of the nucleon is studied in the chiral bag model. U(1)A symmetry and its breaking is incorporated by the massive η' meson outside the bag. The Coriolis coupling between the η' and the quarks is treated in the framework of the semi-classical cranking method. We confirm previously obtained results that the quark spin content of the nucleon depends rather strongly on the bag radius R. The EMC data indicate a preference for small bag radii in the chiral bag.",

author = "A. Hosaka and W. Weise",

note = "Funding Information: The result (2) has triggered a number of considerations concerning the structure of the nucleon: it apparently contradicts results of naive valence quark Work supported in part by BMFT grant 06 OR 762. Research fellow of the Alexander von Humboldt Foundation.",

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AU - Hosaka, A.

AU - Weise, W.

N1 - Funding Information: The result (2) has triggered a number of considerations concerning the structure of the nucleon: it apparently contradicts results of naive valence quark Work supported in part by BMFT grant 06 OR 762. Research fellow of the Alexander von Humboldt Foundation.

PY - 1989/12/14

Y1 - 1989/12/14

N2 - The spin content of the nucleon is studied in the chiral bag model. U(1)A symmetry and its breaking is incorporated by the massive η' meson outside the bag. The Coriolis coupling between the η' and the quarks is treated in the framework of the semi-classical cranking method. We confirm previously obtained results that the quark spin content of the nucleon depends rather strongly on the bag radius R. The EMC data indicate a preference for small bag radii in the chiral bag.

AB - The spin content of the nucleon is studied in the chiral bag model. U(1)A symmetry and its breaking is incorporated by the massive η' meson outside the bag. The Coriolis coupling between the η' and the quarks is treated in the framework of the semi-classical cranking method. We confirm previously obtained results that the quark spin content of the nucleon depends rather strongly on the bag radius R. The EMC data indicate a preference for small bag radii in the chiral bag.

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U2 - 10.1016/0370-2693(89)90438-3

DO - 10.1016/0370-2693(89)90438-3

M3 - Article

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SN - 0370-2693

VL - 232

SP - 442

EP - 446

JO - Physics Letters B

JF - Physics Letters B

IS - 4

ER -

Spin content of the nucleon in the chiral bag

Abstract

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