Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2008-11-04
Nucl.Phys.Proc.Suppl.186:306-311,2009
Physics
High Energy Physics
High Energy Physics - Phenomenology
6 pages, Talk given at QCD 08 (7-12th july, Montpellier) and Scientific part of the invited talk for a tribute to Paco Yndurai
Scientific paper
10.1016/j.nuclphysbps.2008.12.06
I present a mini-review of the masses and couplings of the bare (unmixed) light scalar mesons : $\bar qq, (\overline{qq})(qq), (\bar qq)(\bar qq), gg$ 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 ones presented earlier [1]. Despite some progresses, the internal structure of the light scalar mesons remain puzzling, and some further efforts are required. It will be more fun at LHC if the Higgs of the Standard Model is a $\sigma$-like resonance.
No associations
LandOfFree
Light scalar mesons in QCD does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Light scalar mesons in QCD, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Light scalar mesons in QCD will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-184570