Extended Chiral Transformations Including Diquark Fields As Parameters
نویسنده
چکیده
We introduce extended chiral transformation, which depends both on pseudoscalar and diquark fields as parameters and determine its group structure. Assuming soft symmetry breaking in diquark sector, bosonisation of a quasiGoldstone ud-diquark is performed. In the chiral limit the ud-diquark mass is defined by the gluon condensate, mud ≈ 300MeV . The diquark charge radius is 〈r ud〉 1/2 ≈ 0.5fm. PACS:11.30.Rd, 12.50.-d
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