Z -> b b-bar Excess from R-Parity Violation
| dc.creator | Brahm, David E. | |
| dc.date | 1996-04-17 | |
| dc.date | 1996-08-22 | |
| dc.date.accessioned | 2026-07-07T09:03:13Z | |
| dc.date.available | 2026-07-07T09:03:13Z | |
| dc.description | The $\Zbb$ excess, $\Zcc$ deficit, and low left-right asymmetry $A_b$ may be explained by a single term $\lam C^c B^c B^{\prime c}$ in the superpotential. This operator violates R-parity and requires a sequential 4th generation. 1-loop diagrams involving squark exchange interfere with the tree-level processes to give an excess of right-handed $b$ quarks, and a deficit of right-handed $c$ quarks. Though the coupling must be large ($\lam\approx 2$ or $3$), the model is phenomenologically and cosmologically acceptable. | |
| dc.description | 4 pages, LaTeX, 1 figure (using epsf). Running of lambda added, typos fixed | |
| dc.identifier | https://arxiv.org/abs/hep-ph/9604325 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/9604325 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/148924 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Z -> b b-bar Excess from R-Parity Violation | |
| dc.type | text |