Double Lepton Polarization in $Λ_b -->Λl^+ l^-$ Decay in the Standard Model with Fourth Generations Scenario
| dc.creator | Zolfagharpour, F. | |
| dc.creator | Bashiry, V. | |
| dc.date | 2007-07-30 | |
| dc.date.accessioned | 2026-07-07T11:18:15Z | |
| dc.date.available | 2026-07-07T11:18:15Z | |
| dc.description | This study investigates the influence of the fourth generation quarks on the double lepton polarizations in Λ_b --> Λ\ell^+ \ell^- decay by taking |V^\ast_{t's}V_{t'b}|= 0.005,0.01,0.02,0.03 with phase \{60^\circ,90^\circ,120^\circ\}. We will try to obtain a constrain on the mass of the 4th generation top like quark t', which is consistent with the $b--> s\ell^+\ell^- rate . With the above mentioned parameters, we will try to show that the double lepton(muon, tau) polarizations are quite sensitive to the existence of fourth generation. It can serve as a good tool to search for new physics effects, precisely, to search for the fourth generation quarks(t', b') via its indirect manifestations in loop diagrams. | |
| dc.description | 36 pages, 33 figures | |
| dc.identifier | https://arxiv.org/abs/0707.4337 | |
| dc.identifier | http://arxiv.org/abs/0707.4337 | |
| dc.identifier | Nucl.Phys.B796:294-319,2008 | |
| dc.identifier | doi:10.1016/j.nuclphysb.2007.12.022 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/193283 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Double Lepton Polarization in $Λ_b -->Λl^+ l^-$ Decay in the Standard Model with Fourth Generations Scenario | |
| dc.type | text |