CONSTRAINING ANOMALOUS TOP-QUARK COUPLINGS AT THE FERMILAB-TEVATRON

Citation
D. Atwood et al., CONSTRAINING ANOMALOUS TOP-QUARK COUPLINGS AT THE FERMILAB-TEVATRON, Physical review. D. Particles and fields, 52(11), 1995, pp. 6264-6270
Citations number
45
Categorie Soggetti
Physics, Particles & Fields
ISSN journal
05562821
Volume
52
Issue
11
Year of publication
1995
Pages
6264 - 6270
Database
ISI
SICI code
0556-2821(1995)52:11<6264:CATCAT>2.0.ZU;2-I
Abstract
We explore the influence of an anomalous chromomagnetic moment kappa o n the production characteristics of top quark pairs at the Fermilab Te vatron with a center-of-mass energy of root s = 1.8 TeV. We find that for top quarks in the 175 GeV mass range, present measurements are pro bing values of kappa of order 0.25. We discuss a class of technicolor models with techniscalars which may produce such large values of kappa in conjunction with the generation of m(t). For kappa's in this range we find that significant enhancements in both the q (q) over bar, gg --> t (t) over bar production cross sections are obtained. Once suffic ient statistics have been accumulated and QCD uncertainties are under control, future high precision measurements at the Fermilab Tevatron w ill eventually be sensitive to values of kappa with magnitudes smaller than similar or equal to 0.1.