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Helicity of the W boson in lepton +jets t ¯t events

DO Collaboration, The and Bertram, Iain A. and Borissov, Guennadi V. and Ratoff, Peter N. and Sopczak, Andre (2005) Helicity of the W boson in lepton +jets t ¯t events. Physics Letters B, 617 (1-2). pp. 1-10. ISSN 0370-2693

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Abstract

We examine properties of candidate events in lepton + jets final states to establish the helicities of W bosons in t→W+b decays. Our analysis is based on a direct calculation of a probability density for each event to correspond to a final state, as a function of the helicity of the W boson. Using the 125 events/pb of data collected by the DØ experiment at the Fermilab Tevatron Collider at , we obtain a longitudinal helicity fraction F0=0.56±0.31, consistent with the prediction of F0=0.70 from the standard model.

Item Type: Article
Journal or Publication Title: Physics Letters B
Additional Information: Author list is partial - see original article for full author list.
Subjects: Q Science > QC Physics
Departments: Faculty of Science and Technology > Physics
ID Code: 10059
Deposited By: Ms Margaret Calder
Deposited On: 30 Jun 2008 14:40
Refereed?: Yes
Published?: Published
Last Modified: 26 Jul 2012 14:43
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/10059

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