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Search for a fourth generation b-prime-quark at LEP-II at s**(1/2) = 196-GeV - 209-GeV.

Abdallah, J. and Sopczak, Andre and The DELPHI Collaboration, et al. (2007) Search for a fourth generation b-prime-quark at LEP-II at s**(1/2) = 196-GeV - 209-GeV. European Physical Journal C: Particles and Fields, 50 (3). pp. 507-518. ISSN 1434-6044

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Abstract

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 , where Vcb′, Vtb′ and Vtb are elements of the extended CKM matrix.

Item Type: Article
Journal or Publication Title: European Physical Journal C: Particles and Fields
Subjects: Q Science > QC Physics
Departments: Faculty of Science and Technology > Physics
ID Code: 18647
Deposited By: ep_ss_importer
Deposited On: 30 Oct 2008 11:42
Refereed?: Yes
Published?: Published
Last Modified: 26 Jul 2012 15:20
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/18647

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