First Observation of Electroweak Single Top Quark Production

Preprint

1 May 2009

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.0903.0885

Abstract

We report the first observation of single top quark production using 3.2 fb^-1 of pbar p collision data with sqrt{s}=1.96 TeV collected by the Collider Detector at Fermilab. The significance of the observed data is 5.0 standard deviations, and the expected sensitivity for standard model production and decay is in excess of 5.9 standard deviations. Assuming m_t=175 GeV/c^2, we measure a cross section of 2.3 +0.6 -0.5 (stat+syst) pb, extract the CKM matrix element value |V_{tb}|=0.91 +-0.11 (stat+syst) 0.07(theory), and set the limit |V_{tb}|>0.71 at the 95% C.L.

Keywords

TOP QUARK PRODUCTION
ELECTROWEAK SINGLE
SINGLE TOP QUARK
STANDARD MODEL
STAT

All Related Versions

Version 1, 2009-03-05, ArXiv
Version 2, 2009-03-18, ArXiv
Version 3, 2009-05-01, ArXiv
Published version: Physical Review Letters, 103 (9), 092002.

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