Extended chiral Group and Scalar Diquarks
| dc.creator | Novozhilov, Yu. | |
| dc.creator | Pronko, A. | |
| dc.creator | Vassilevich, D. | |
| dc.creator | Korotkov, A. | |
| dc.date | 1999-01-08 | |
| dc.date.accessioned | 2026-07-07T04:06:11Z | |
| dc.date.available | 2026-07-07T04:06:11Z | |
| dc.description | 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 $<r^2_{ud}>^{1/2}\approx 0.5 fm$. We consider also the flavour triplet of scalar diquarks $(ud)$, $(us)$ and $(ds)$ together with pseudoscalar mesons and calculate diquark masses and decay constants in terms of meson parameters and the gluon condensate. | |
| dc.description | 18 pages | |
| dc.identifier | https://arxiv.org/abs/hep-ph/9901255 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/9901255 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/48669 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Extended chiral Group and Scalar Diquarks | |
| dc.type | text |