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Quadrupolar contact terms and hyperfine structure

delete2006-08-04
delete9
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G
G. Karl *
V
V.A. Novikov
DOI：10.1103/PhysRevC.74.024001delete
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Abstract

Abstract

En 中文
In the interaction of two electric quadrupoles, there is at short range a contact term proportional to the second derivative of a delta function. This contact term contributes to the hyperfine splitting of bound states of two particles with spin one or higher - for example, the bound state of Omega(-) and a nucleus with spin one. The contact hyperfine splitting occurs in states with orbital angular momentum unity (P wave), in contrast to the Fermi contact interaction, which is in S states. We find that these contact splittings will be observable with Omega(-) atoms and help measure the quadrupole moment and charge radius of the hyperon.
Keywords:
DECUPLET BARYONS
MOMENT
NUCLEON
ATOMS
OMEGA
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Journal

Physical Review C cover
Physical Review C
IF:
3.4
Papers:
2.9W
Citations:
5.7W

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