EPJ Web of Conferences
Volume 60, 2013LHCP 2013 – Large Hadron Collider Physics 2013
|Number of page(s)||3|
|Published online||26 November 2013|
Evidence for the associated production of a W boson and a top quark in ATLAS
Physikalisches Institut, Rheinische Friedrich-Wilhelms-Universität Bonn, Nußallee 12, 53115 Bonn, Germany
a e-mail: email@example.com
Published online: 26 November 2013
In proton collisions at the LHC, top quarks can be produced in pairs via the strong interaction and individually via the weak interaction. The weak interaction production can be subdivided into three channels: the t-channel, the s-channel and the associated production of a W boson and a top quark. The total production cross-section of these three channels is about one third of the total top quark production cross-section. The t-channel is dominant and has been measured both at the Tevatron and the LHC. However, the Wt associated production has not yet been observed. Different final states can be used to isolate the associated Wt production from background processes, depending on the decay modes of the two W bosons. The channel with two leptons is analysed by ATLAS to present evidence for Wt associated production at √s = 7 TeV. The measurement uses a boosted decision tree to separate signal from background.
© Owned by the authors, published by EDP Sciences, 2013
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 2.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.