Light scalar mesons in QCD

被引：25
作者：
Narison, Stephan [1 ]
机构：
[1] Univ Montpellier 2, Lab Phys Theor & Astroparticules, F-34095 Montpellier 05, France
来源：
NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS | 2009年 / 186卷
关键词：
CHIRAL-SYMMETRY-BREAKING; GLUON CONDENSATE; QUARK MASSES; TESTS; GLUEBALLS; RESONANCE; ALPHA(S); SEARCH; DECAYS; LOWEST;
D O I：
10.1016/j.nuclphysbps.2008.12.069
中图分类号：
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号：
摘要：
I present a mini-review of the masses and couplings of the bare (unmixed) light. scalar mesons : (q) over barq, ((qq) over bar)(qq), ((q) over barq), gg from QCD spectral sum rules (QSSR) and low-energy theorems (LET) which we compare with recent lattice calculations when available. Some unbiased comments on the different scenarios are given. The possiblity for the sigma(0.6) to be mostly a gluonium/glueball with a huge, violation of the OZI rule in its decay is discussed. This review complements and updates the onus presented earlier [1]. Despite some progresses, the internal structure of the light scalar mesons remain puzzling, allot some further efforts are required. It will be more fun at LHC if the Higgs of the Standard Model is a sigma-like resonance.
引用
收藏
页码：306 / 311
页数：6
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