Abstract
The observation of a large {gamma}{gamma} width for the {sup 1}D{sub 2} qq-bar state {pi}{sub 2}(1670) suggests that the {gamma}{gamma} couplings of many orbitally-excited light-quark qq-bar states may be experimentally accessible. In this paper we present {gamma}{gamma} helicity amplitudes for nonrelativistic fermion-antifermion states with general angular-momentum quantum numbers {sup 1}l{sub g} and {sup 3}l{sub g}, and note some relations and selection rules that may be useful in the spectroscopic classification of orbital excitations. (author).
Ackleh, E S;
[1]
Barnes, T;
[1]
Close, F E
[1]
- Tennessee Univ., Knoxville, TN (United States). Dept. of Physics
Citation Formats
Ackleh, E S, Barnes, T, and Close, F E.
Two-photon helicity selection rules and widths for positronium and quarkonium states with arbitrary angular momenta.
United Kingdom: N. p.,
1991.
Web.
Ackleh, E S, Barnes, T, & Close, F E.
Two-photon helicity selection rules and widths for positronium and quarkonium states with arbitrary angular momenta.
United Kingdom.
Ackleh, E S, Barnes, T, and Close, F E.
1991.
"Two-photon helicity selection rules and widths for positronium and quarkonium states with arbitrary angular momenta."
United Kingdom.
@misc{etde_10129009,
title = {Two-photon helicity selection rules and widths for positronium and quarkonium states with arbitrary angular momenta}
author = {Ackleh, E S, Barnes, T, and Close, F E}
abstractNote = {The observation of a large {gamma}{gamma} width for the {sup 1}D{sub 2} qq-bar state {pi}{sub 2}(1670) suggests that the {gamma}{gamma} couplings of many orbitally-excited light-quark qq-bar states may be experimentally accessible. In this paper we present {gamma}{gamma} helicity amplitudes for nonrelativistic fermion-antifermion states with general angular-momentum quantum numbers {sup 1}l{sub g} and {sup 3}l{sub g}, and note some relations and selection rules that may be useful in the spectroscopic classification of orbital excitations. (author).}
place = {United Kingdom}
year = {1991}
month = {Dec}
}
title = {Two-photon helicity selection rules and widths for positronium and quarkonium states with arbitrary angular momenta}
author = {Ackleh, E S, Barnes, T, and Close, F E}
abstractNote = {The observation of a large {gamma}{gamma} width for the {sup 1}D{sub 2} qq-bar state {pi}{sub 2}(1670) suggests that the {gamma}{gamma} couplings of many orbitally-excited light-quark qq-bar states may be experimentally accessible. In this paper we present {gamma}{gamma} helicity amplitudes for nonrelativistic fermion-antifermion states with general angular-momentum quantum numbers {sup 1}l{sub g} and {sup 3}l{sub g}, and note some relations and selection rules that may be useful in the spectroscopic classification of orbital excitations. (author).}
place = {United Kingdom}
year = {1991}
month = {Dec}
}