Vector Meson Decay Constants With Inclusion Of Both Lo And Nlo Dirac Covariants In Hadron-Quark Vertex
| dc.contributor.advisor | Bhatnagar, Shashank (PhD) | |
| dc.contributor.author | Mengesha, Yikdem | |
| dc.date.accessioned | 2018-07-10T05:51:24Z | |
| dc.date.accessioned | 2023-11-09T11:25:15Z | |
| dc.date.available | 2018-07-10T05:51:24Z | |
| dc.date.available | 2023-11-09T11:25:15Z | |
| dc.date.issued | 2009-07 | |
| dc.description.abstract | The Bethe-Salpeter equation (BSE) provides a non-perturbativ method of treating the relativistic two-particle bound state problems on the basis of covariant instantaneous ansatz (CIA). On this basis, the structure of the hadron-quark vertex function (ˆq) of vector mesons is derived from a QCD motivated Bethe-salpeter (BS) frame work and it is generalized to include various Dirac covariants (other than i .") from their complete set. They are incorporated in accordance with a naive power counting rule order-by-order in powers of the inverse of the meson mass. We study vector meson decay constants with inclusion of both the leading order (LO) and the next-to-leading order (NLO) Dirac Covariants, in addition to i .", in the Hadron-Quark vertex function (ˆq) from their complete set on the basis of power counting rule through the frame work of BSE under covariant instantaneous ansatz | en_US |
| dc.identifier.uri | http://10.90.10.223:4000/handle/123456789/7454 | |
| dc.language.iso | en | en_US |
| dc.publisher | Addis Ababa University | en_US |
| dc.subject | Both Lo And Nlo Dirac Covariants | en_US |
| dc.title | Vector Meson Decay Constants With Inclusion Of Both Lo And Nlo Dirac Covariants In Hadron-Quark Vertex | en_US |
| dc.type | Thesis | en_US |