Abstract
The failure of existing theories to agree with the experimental measurements of the fine structure of the {Chi} states of the bb-bar and cc-bar systems is discussed. Various possible explanations, such as mixing of the 2P triplet with the 1F triplet are ruled out. The fact is used that the spin-independent potential is well-determined in the relevant range to extract accurate determinations of expectation values of the spin-dependent potentials, providing tests for future theories. It is found that the usual ansatz that the qq-bar interaction has effective vector and scalar contributions only is very unlikely to be sufficient to explain the fine structure of the {sup 3}P levels and to accommodate the recent measurement of the mass of the {sup 1}P state in charmonium. (author) 22 refs.; 3 figs.; 3 tabs.
Citation Formats
Franzini, P J.
Fine structure of the P states in heavy quarkonium and the nature of the spin-dependent potential.
France: N. p.,
1992.
Web.
Franzini, P J.
Fine structure of the P states in heavy quarkonium and the nature of the spin-dependent potential.
France.
Franzini, P J.
1992.
"Fine structure of the P states in heavy quarkonium and the nature of the spin-dependent potential."
France.
@misc{etde_10109864,
title = {Fine structure of the P states in heavy quarkonium and the nature of the spin-dependent potential}
author = {Franzini, P J}
abstractNote = {The failure of existing theories to agree with the experimental measurements of the fine structure of the {Chi} states of the bb-bar and cc-bar systems is discussed. Various possible explanations, such as mixing of the 2P triplet with the 1F triplet are ruled out. The fact is used that the spin-independent potential is well-determined in the relevant range to extract accurate determinations of expectation values of the spin-dependent potentials, providing tests for future theories. It is found that the usual ansatz that the qq-bar interaction has effective vector and scalar contributions only is very unlikely to be sufficient to explain the fine structure of the {sup 3}P levels and to accommodate the recent measurement of the mass of the {sup 1}P state in charmonium. (author) 22 refs.; 3 figs.; 3 tabs.}
place = {France}
year = {1992}
month = {Aug}
}
title = {Fine structure of the P states in heavy quarkonium and the nature of the spin-dependent potential}
author = {Franzini, P J}
abstractNote = {The failure of existing theories to agree with the experimental measurements of the fine structure of the {Chi} states of the bb-bar and cc-bar systems is discussed. Various possible explanations, such as mixing of the 2P triplet with the 1F triplet are ruled out. The fact is used that the spin-independent potential is well-determined in the relevant range to extract accurate determinations of expectation values of the spin-dependent potentials, providing tests for future theories. It is found that the usual ansatz that the qq-bar interaction has effective vector and scalar contributions only is very unlikely to be sufficient to explain the fine structure of the {sup 3}P levels and to accommodate the recent measurement of the mass of the {sup 1}P state in charmonium. (author) 22 refs.; 3 figs.; 3 tabs.}
place = {France}
year = {1992}
month = {Aug}
}