On Measurement of Helicity Parameters in Top Quark Decay
High Energy Physics - Phenomenology
2012-08-27 v2
Abstract
To enable an evaluation of future measurements of the helicity parameters for " t --> W b " decay in regard to " T_FS violation", this paper considers the effects of an additional pure-imaginary coupling, (i g/2 Lambda) or (i g), associated with a specific, single additional Lorentz structure, i = S, P, S + P, ... Sizable " T_FS violation" signatures can occur for low-effective mass scales (< 320 GeV), but in most cases can be more simply excluded by 10% precision measurement of the probabilities P(W_L) and P(b_L). Signatures for excluding the presence of " T_FS violation" associated with the two dynamical phase-type ambiguities are investigated.
Cite
@article{arxiv.hep-ph/0007086,
title = {On Measurement of Helicity Parameters in Top Quark Decay},
author = {Charles A. Nelson and L. J. Adler,},
journal= {arXiv preprint arXiv:hep-ph/0007086},
year = {2012}
}
Comments
15 pages, 1 table, 7 figures, no macros