Study of FCNC mediated Z boson effect in the semileptonic rare baryonic decays $Λ_b \to Λl^+ l^- $
| dc.creator | Giri, A. K. | |
| dc.creator | Mohanta, R. | |
| dc.date | 2005-10-13 | |
| dc.date.accessioned | 2026-07-07T12:25:17Z | |
| dc.date.available | 2026-07-07T12:25:17Z | |
| dc.description | We study the effect of the FCNC mediated $Z$ boson in the rare semileptonic baryonic decays $Λ_b \to Λl^+ l^-$. We consider the model where the standard model fermion sector is extended by an extra vector like down quark, as a consequence of which it allows CP violating Z mediated flavor changing neutral current at the tree level. We find that due to this non-universal $Zbs $ coupling, branching ratios of the rare semileptonic $Λ_b$ decays are enhanced reasonably from their corresponding standard model values and the zero point of the forward backward asymmetry for $Λ_b \to Λμ^+ μ^-$ is shifted to the left. | |
| dc.description | 17 pages, 8 figures, to appear in EPJC | |
| dc.identifier | https://arxiv.org/abs/hep-ph/0510171 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/0510171 | |
| dc.identifier | Eur.Phys.J.C45:151-158,2006 | |
| dc.identifier | doi:10.1140/epjc/s2005-02407-6 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/214568 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Study of FCNC mediated Z boson effect in the semileptonic rare baryonic decays $Λ_b \to Λl^+ l^- $ | |
| dc.type | text |