Why are the isoscalar neutral current axial-vector couplings and isoscalar nucleon anomalous moments small?
By using an argument based on the realization of chiral current algebras, we explain why the isoscalar neutral current axial-vector coupling and the isoscalar nucleon anomalous moments are small. We give an argument which predicts, ( G A N(0))p/( G A N(0)) n = ( H A N(0)) p/( H A N(0)) n = k p/ k n...
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| Published in | Physics letters. B Vol. 88; no. 3; pp. 343 - 348 |
|---|---|
| Main Authors | , , |
| Format | Journal Article |
| Language | English |
| Published |
Elsevier B.V
01.01.1979
|
| Online Access | Get full text |
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| Summary: | By using an argument based on the realization of chiral current algebras, we explain why the isoscalar neutral current axial-vector coupling and the isoscalar nucleon anomalous moments are small. We give an argument which predicts, (
G
A
N(0))p/(
G
A
N(0))
n = (
H
A
N(0))
p/(
H
A
N(0))
n =
k
p/
k
n ≈ 1.79/−1.91, where
k
p
and
k
n
are the anomalous moments of the proton and neutron, respectively. (
G
A
N(0))
p and (
H
A
N(0))
p are the weak neutral current axial-vector coupling and the induced pseudoscalar coupling for the proton, respectively. |
|---|---|
| ISSN: | 0370-2693 1873-2445 |
| DOI: | 10.1016/0370-2693(79)90483-0 |