Abstract
The suggestion by Jaffe that if {sigma} is a light q2q-bar2 state 0++ then even the fundamental chiral transformation properties of the {sigma} becomes unclear, has stimulated much interest. Adler pointed out that in fact the seminal work on chiral symmetry via PCAC consistency, is really quite consistent with the {sigma} being predominantly q2q-bar2. This interpretation was actually backed by subsequent work on effective Lagrangian methods for linear and non linear realizations. More recent work of Achasov suggests that intermediate four-quark states determine amplitudes involving other scalars a0(980) and f0(980) below 1 GeV, and the report by Ning Wu that study on {sigma} meson in J/{psi} {yields} {omega}{pi}+{pi}- continue to support a non qq-bar {sigma} with mass as low as 390 MeV. It is also noted that more recent re-analysis of {pi}K scattering by S. Ishida et al. together with the work of the E791 Collaboration, support the existence of the scalar {kappa} particle with comparatively light mass as well.
Tuan, S F
[1]
- Department of Physics, University of Hawaii at Manoa, Honolulu, HI 96822-2219 (United States)
Citation Formats
Tuan, S F.
Chiral symmetry and scalars.
United States: N. p.,
2002.
Web.
doi:10.1063/1.1482477.
Tuan, S F.
Chiral symmetry and scalars.
United States.
https://doi.org/10.1063/1.1482477
Tuan, S F.
2002.
"Chiral symmetry and scalars."
United States.
https://doi.org/10.1063/1.1482477.
@misc{etde_20620855,
title = {Chiral symmetry and scalars}
author = {Tuan, S F}
abstractNote = {The suggestion by Jaffe that if {sigma} is a light q2q-bar2 state 0++ then even the fundamental chiral transformation properties of the {sigma} becomes unclear, has stimulated much interest. Adler pointed out that in fact the seminal work on chiral symmetry via PCAC consistency, is really quite consistent with the {sigma} being predominantly q2q-bar2. This interpretation was actually backed by subsequent work on effective Lagrangian methods for linear and non linear realizations. More recent work of Achasov suggests that intermediate four-quark states determine amplitudes involving other scalars a0(980) and f0(980) below 1 GeV, and the report by Ning Wu that study on {sigma} meson in J/{psi} {yields} {omega}{pi}+{pi}- continue to support a non qq-bar {sigma} with mass as low as 390 MeV. It is also noted that more recent re-analysis of {pi}K scattering by S. Ishida et al. together with the work of the E791 Collaboration, support the existence of the scalar {kappa} particle with comparatively light mass as well.}
doi = {10.1063/1.1482477}
journal = []
issue = {1}
volume = {619}
journal type = {AC}
place = {United States}
year = {2002}
month = {Jun}
}
title = {Chiral symmetry and scalars}
author = {Tuan, S F}
abstractNote = {The suggestion by Jaffe that if {sigma} is a light q2q-bar2 state 0++ then even the fundamental chiral transformation properties of the {sigma} becomes unclear, has stimulated much interest. Adler pointed out that in fact the seminal work on chiral symmetry via PCAC consistency, is really quite consistent with the {sigma} being predominantly q2q-bar2. This interpretation was actually backed by subsequent work on effective Lagrangian methods for linear and non linear realizations. More recent work of Achasov suggests that intermediate four-quark states determine amplitudes involving other scalars a0(980) and f0(980) below 1 GeV, and the report by Ning Wu that study on {sigma} meson in J/{psi} {yields} {omega}{pi}+{pi}- continue to support a non qq-bar {sigma} with mass as low as 390 MeV. It is also noted that more recent re-analysis of {pi}K scattering by S. Ishida et al. together with the work of the E791 Collaboration, support the existence of the scalar {kappa} particle with comparatively light mass as well.}
doi = {10.1063/1.1482477}
journal = []
issue = {1}
volume = {619}
journal type = {AC}
place = {United States}
year = {2002}
month = {Jun}
}