What is the Relationship Between Spin and Parity in Nuclei?

  • Thread starter Thread starter splitringtail
  • Start date Start date
  • Tags Tags
    Reading Table
splitringtail
Messages
49
Reaction score
0
My table of nuclides has a column for Spin/Parity for the nuclides when applicable. It says it is the nuclei's total spin... yet I was under the assumption that a nucleus would have different spins depending if the proton and neutrons have various combination of up and down spins.
 
Physics news on Phys.org
The table gives you the spin of the lowest-energy state. All other combinations would be excited and unstable.
 
Oh yeah, your are right, I didn't think of it like that. I see what you mean, thank you.
 
Toponium is a hadron which is the bound state of a valance top quark and a valance antitop quark. Oversimplified presentations often state that top quarks don't form hadrons, because they decay to bottom quarks extremely rapidly after they are created, leaving no time to form a hadron. And, the vast majority of the time, this is true. But, the lifetime of a top quark is only an average lifetime. Sometimes it decays faster and sometimes it decays slower. In the highly improbable case that...
I'm following this paper by Kitaev on SL(2,R) representations and I'm having a problem in the normalization of the continuous eigenfunctions (eqs. (67)-(70)), which satisfy \langle f_s | f_{s'} \rangle = \int_{0}^{1} \frac{2}{(1-u)^2} f_s(u)^* f_{s'}(u) \, du. \tag{67} The singular contribution of the integral arises at the endpoint u=1 of the integral, and in the limit u \to 1, the function f_s(u) takes on the form f_s(u) \approx a_s (1-u)^{1/2 + i s} + a_s^* (1-u)^{1/2 - i s}. \tag{70}...
Back
Top