ar X iv : h ep - p h / 06 02 10 5 v 2 6 A pr 2 00 6 Quadrupolar contact terms and Hyperfine Structure
نویسندگان
چکیده
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 Ω − 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 Ω − atoms and help measure the quadrupole moment and charge radius of the hyperon.
منابع مشابه
ar X iv : h ep - p h / 06 02 10 5 v 1 1 3 Fe b 20 06 Quadrupolar contact terms and Hyperfine Structure
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 Ω − and a nucleus with spin one. The contact hyperfine splitting occurs in states with orbital angular mom...
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