Scalar top production in e+ e- annihilation
Aug, 19908 pages
Published in:
- Phys.Lett.B 252 (1990) 127-134
- Published: 1990
Report number:
- KEK-TH-262,
- KEK-PREPRINT-90-83,
- CERN-TH-5854-90
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Abstract: (Elsevier)
We discuss the pair production of light scalar top quarks in e + e − annihilation. The lighter mass eigenstate t̃ 1 is a mixture of SU(2) doublet and singlet t̃ states and can have a vanishing coupling to the Z boson. We show that the present data on the total decay width of the Z 0 can put a bound on the t̃ 1 mass for some values of the mixing angle, but even existing dedicated search for squarks leaves a large portion of the parameter space unconstrained. We include both initial-state QED and final-state QCD corrections in our results for the cross section; even quite far away from the threshold the total corrections can lie between −15% and +70%.- electron positron: annihilation
- annihilation: electron positron
- postulated particle: squark
- squark: top
- squark: electroproduction
- electroproduction: squark
- squark: pair production
- pair production: squark
- mass: squark
- squark: mass
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