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arXiv · hep-ph/9411421

Extended Chiral Transformations Including Diquark Fields as Parameters

Yuri Novozhilov·Andrei Pronko·Dmitri Vassilevich
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Abstract

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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Yuri Novozhilov, Andrei Pronko, Dmitri Vassilevich. 1994-11-29. Extended Chiral Transformations Including Diquark Fields as Parameters. https://doi.org/10.1016/0370-2693(94)01451-h

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