Lightest scalars as chiral partners of the Nambu--Goldstone bosons

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dc.creatorXiao, L. Y.
dc.creatorZheng, H. Q.
dc.creatorZhou, Z. Y.
dc.date2006-09-01
dc.date.accessioned2026-07-07T11:05:39Z
dc.date.available2026-07-07T11:05:39Z
dc.descriptionWe review the spectrum of lightest scalar resonances recently determined using dispersion techniques. The conceptual difference between the pole mass and the bare mass (or the line--shape mass) is stressed. The nature of the lightest scalars are discussed and we argue, without relying on any model details, that the $σ(500)$, $κ(700)$, $a_0(980)$ and $f_0(980)$ may be understood as chiral partners of the Nambu--Goldstone bosons in the linear realization of chiral symmetry. But there remains some difficulties in understanding the role of $f_0(980)$ in this picture.
dc.descriptionInvited talk given by Zheng at QCD06, Montpellier, France, July 3--7, 2006
dc.identifierhttps://arxiv.org/abs/hep-ph/0609009
dc.identifierhttp://arxiv.org/abs/hep-ph/0609009
dc.identifierNucl.Phys.Proc.Suppl.174:142-145,2007
dc.identifierdoi:10.1016/j.nuclphysbps.2007.08.111
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/189270
dc.subjectHigh Energy Physics - Phenomenology
dc.titleLightest scalars as chiral partners of the Nambu--Goldstone bosons
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