SINGLE TOP PRODUCTION AT LEP-200

Authors
HAGIWARA K TANAKA M STELZER T
Citation
K. Hagiwara et al., SINGLE TOP PRODUCTION AT LEP-200, Physics letters. Section B, 325(3-4), 1994, pp. 521-525
Citations number
13
Categorie Soggetti
Physics
Journal title
Physics letters. Section B → ACNP
ISSN journal
03702693
Volume
325
Issue
3-4
Year of publication
1994
Pages
521 - 525
Database
ISI
SICI code
0370-2693(1994)325:3-4<521:STPAL>2.0.ZU;2-W
Abstract
We present exact tree level cross sections for the single top producti on process e-e+ --> e-nu(e)t(b)BAR at LEP 200. The results reproduce r oughly those obtained earlier by using the equivalent real photon appr oximation and we confirm the observation that detecting a top heavier than half the c.m. energy is not feasible at LEP 200. The calculation has been performed by a new automatic Feynman amplitude generator MadG raph which produces HELAS code for the helicity amplitudes.