Constraints on Trilinear Coupling Constant A_0 in minimal Supergravity Model
| dc.creator | Tabei, Jun | |
| dc.creator | Hotta, Hiroshi | |
| dc.date | 2002-08-05 | |
| dc.date | 2002-09-18 | |
| dc.date.accessioned | 2026-07-07T03:47:38Z | |
| dc.date.available | 2026-07-07T03:47:38Z | |
| dc.description | Constraints on the common trilinear coupling constant $A_{0}$ are obtained in the minimal supergravity model. $A_{0}$ is usually given at GUT scale $M_{X}$ by-hand, and has been regarded as one of the five arbitrary parameters in this model. However, $B(M_{Z})$ as the common bilinear coupling constant $B$ at the electroweak scale $M_{Z} \simeq 91$(GeV) is fixed by the shape of the Higgs potential. With the renormalization group equations, this $B(M_{Z})$ is evolved to $B_{0}$ at $M_{X}$ where a well-known relation exists between the evolved $B_{0}$ and $A_{0}$ as $B_{0} = (A_{0}-1) m_{0}$. Therefore, $A_{0}$ is fixed as a function of the other arbitrary parameters. In other words, the number of arbitrary parameters are reduced by this method. Additionally, large $\tanβ > 40$ is forbidden by the conditions at $M_Z$. | |
| dc.description | 5 pages, 2 figures in the ReVTex4 format | |
| dc.identifier | https://arxiv.org/abs/hep-ph/0208039 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/0208039 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/41742 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Constraints on Trilinear Coupling Constant A_0 in minimal Supergravity Model | |
| dc.type | text |