Extended Chiral Transformations Including Diquark Fields as Parameters

Details Extended Chiral Transformations Including Diquark Fields as Parameters Extended Chiral Transformations Including Diquark Fields as Parameters

1994-11-29

arxiv.org/abs/hep-ph/9411421v1

Phys.Lett. B343 (1995) 358-362; Erratum-ibid. B351 (1995) 601

Physics

High Energy Physics

High Energy Physics - Phenomenology

Latex file, to apear in Phis. Lett. B

Scientific paper

10.1016/0370-2693(94)01451-H

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 quasi-Goldstone $ud$-diquark is performed. In the chiral limit the $ud$-diquark mass is defined by the gluon condensate, $m_{ud}\approx 300 MeV$. The diquark charge radius is $\langle r^2_{ud}\rangle^{1/2}\approx 0.5 fm$.

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