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Search for single top quark production at HERA


Aaron, F D; Aldaya Martin, M; Alexa, C; Alimujiang, K; Andreev, V; Müller, K; Nowak, K; Robmann, P; Schmitz, C; Straumann, U; Truöl, P; H1 Collaboration (2009). Search for single top quark production at HERA. Physics Letters B, 678(5):450-458.

Abstract

A search for single top quark production is performed in the full ep data sample collected by the H1 experiment at HERA, corresponding to an integrated luminosity of 474 pb^-1. Decays of top quarks into a b quark and a W boson with subsequent leptonic or hadronic decay of the W are investigated. A multivariate analysis is performed to discriminate top quark production from Standard Model background processes. An upper limit on the top quark production cross section via flavour changing neutral current processes sigma (ep -> etX) < 0.25 pb is established at 95% CL. Limits on the anomalous coupling kappa_{tu gamma} are derived.

Abstract

A search for single top quark production is performed in the full ep data sample collected by the H1 experiment at HERA, corresponding to an integrated luminosity of 474 pb^-1. Decays of top quarks into a b quark and a W boson with subsequent leptonic or hadronic decay of the W are investigated. A multivariate analysis is performed to discriminate top quark production from Standard Model background processes. An upper limit on the top quark production cross section via flavour changing neutral current processes sigma (ep -> etX) < 0.25 pb is established at 95% CL. Limits on the anomalous coupling kappa_{tu gamma} are derived.

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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Physics Institute
Dewey Decimal Classification:530 Physics
Language:English
Date:2009
Deposited On:18 Nov 2009 13:35
Last Modified:05 Apr 2016 13:32
Publisher:Elsevier
ISSN:0370-2693
Publisher DOI:https://doi.org/10.1016/j.physletb.2009.06.057
Related URLs:http://arxiv.org/abs/0904.3876v2

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