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|Title:||Current algebra and the cloudy-bag model|
|Citation:||Physical Review D - Particles, Fields, Gravitation, and Cosmology, 1986; 33(3):817-829|
|Publisher:||American Physical Society|
|M. A. Morgan, G. A. Miller, and A. W. Thomas|
|Abstract:||Two versions of the cloudy-bag model (surface and volume coupling) satisfy the commutation relations of current algebra. Perturbation-theory evaluations of various observables are compared for the two treatments. The electromagnetic properties are essentially the same in both versions. The volume-coupling model contains, in lowest order, a pion-quark contact interaction that contributes to the axial-vector current. Including the effect of this term leads to a computed value of gA of about 1.25, if the radius of the nucleon bag is around 1.0 fm.|
|Rights:||© 1986 The American Physical Society|
|Appears in Collections:||Physics publications|
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