Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2004-04-03
Phys.Lett.562:63-67,1998; Phys.Lett.B562:63-67,2003; Phys.Lett.B610:283-284,2005
Physics
High Energy Physics
High Energy Physics - Phenomenology
Scientific paper
10.1016/j.physletb.2005.02.030
Recently the \mu_{\Delta ^{++}} was found from a fit to (\pi^+)p scattering. This enable us to pinpoint condensate parameters more precisely in the context of QCD sum rules (QCDSR). In the octet sector, the Coleman-Glashow sum rule (CGSR) is violated by the experimental \mu-s. QCDSR allows us to write down two sum rules similar to the CGSR, which are obeyed by the experimental magnetic moments, whereas they rule out a specific model using the Wilson loop approach and a particular chiral quark model. It is amusing to note that the QCDSR allows us to write down the quark and gluon condensates in terms of measurables like the \mu-s of the nucleons and the \Sigma^{+/-}.
Dey Jishnu
Dey Mira
Iqubal Ashik
Sinha Monika
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