## H1prelim-01-163
## Search for Single Top Production at HERA
Reference | N.N., to be presented at DIS 2001, April 2001
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Contact | Christinel Diaconu
Abstract | A search for anomalous top quark production mediated by a flavour changing neutral current is performed in the H1 experiment, using data recorded from 1994 to 2000 which correspond to an integrated luminosity of 115 pb-1. The analysis considers both semileptonic and hadronic decay modes of the top using an optimized multivariate technique. No significant evidence for top production is found in the hadronic channel, while in the leptonic channel the number of observed events compatible with a top signal exceeds the Standard Model expectation. Upper bounds on the value of the anomalous top quark coupling are derived.
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