Constituent Quark-based Linear Σ Model (lσm) Quark and Scalar Mesons, Vector Meson Dominance
نویسندگان
چکیده
After describing the SU(2) linear sigma model (LσM), we dynamically generate it using the B.W. Lee null tadpole sum (characterizing the true vacuum) together with the dimensional regularization lemma. Next we generate the chiral-limiting (CL) nonstrange and strange constituent quark masses m̂ = 325.7 MeV; ms = 486 MeV away from the CL. Finally, we study vector meson dominance (VMD) and the pion, kaon charge radii and the loop-order ρ → πγ, π → γγ amplitudes in the quark model. Lastly, we verify this procedure using tree-order VMD graphs. PACS: 12.39.Ki, 12.39.Mk, 13.25.-k, 14.40.-n
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تاریخ انتشار 2008