Search for a fourth generation b'-quark at LEP-II at sqrt{s}=196-209 GeV
| dc.creator | The DELPHI Collaboration | |
| dc.creator | Abdallah, J. | |
| dc.date | 2007-04-04 | |
| dc.date.accessioned | 2026-07-07T11:56:31Z | |
| dc.date.available | 2026-07-07T11:56:31Z | |
| dc.description | A search for the pair production of fourth generation b'-quarks was performed using data taken by the DELPHI detector at LEP-II. The analysed data were collected at centre-of-mass energies ranging from 196 to 209 GeV, corresponding to an integrated luminosity of 420 pb^{-1}. No evidence for a signal was found. Upper limits on BR(b' -> bZ) and BR(b' -> cW) were obtained for b' masses ranging from 96 to 103 GeV/c^2. These limits, together with the theoretical branching ratios predicted by a sequential four generations model, were used to constrain the value of R_{CKM}=|V_{cb'}/V_{tb'}V_{tb}|, where V_{cb'}, V_{tb'} and V_{tb} are elements of the extended CKM matrix. | |
| dc.description | 26 pages, 12 figures, Accepted by Eur. Phys. J. C | |
| dc.identifier | https://arxiv.org/abs/0704.0594 | |
| dc.identifier | http://arxiv.org/abs/0704.0594 | |
| dc.identifier | Eur.Phys.J.C50:507-518,2007 | |
| dc.identifier | doi:10.1140/epjc/s10052-007-0273-z | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/205563 | |
| dc.subject | High Energy Physics - Experiment | |
| dc.title | Search for a fourth generation b'-quark at LEP-II at sqrt{s}=196-209 GeV | |
| dc.type | text |