Single-top-quark production at hadron colliders
- Department of Physics, University of Illinois, 1110 West Green Street, Urbana, Illinois 61801 (United States)
Single-top-quark production probes the charged-current weak interaction of the top quark, and provides a direct measurement of the CKM matrix element V{sub tb}. We perform two independent analyses to quantify the accuracy with which the W-gluon fusion (gq{r_arrow}t{bar b}q) and q{bar q}{r_arrow}t{bar b} signals can be extracted from the backgrounds at both the Fermilab Tevatron and the CERN LHC. Although perturbation theory breaks down at low transverse momentum for the W-gluon fusion {bar b} differential cross section, we show how to obtain a reliable cross section integrated over low {bar b} transverse momenta up to a cutoff. We estimate the accuracy with which V{sub tb} can be measured in both analyses, including theoretical and statistical uncertainties. We also show that the polarization of the top quark in W-gluon fusion can be detected at the Fermilab Tevatron and the CERN LHC. {copyright} {ital 1998} {ital The American Physical Society}
- OSTI ID:
- 662341
- Journal Information:
- Physical Review, D, Vol. 58, Issue 9; Other Information: PBD: Nov 1998
- Country of Publication:
- United States
- Language:
- English
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