arXiv:hep-ph/0403174·v3·High Energy Physics — Phenomenology
Optimal-Observable Analysis of Possible New Physics Using the b-quark in gamma gamma -> tt -> bX
Bohdan Grzadkowski🇵🇱 · Zenro Hioki🇯🇵 · Kazumasa Ohkuma🇯🇵 · Jose Wudka🇺🇸
Abstract
We study possible anomalous top-quark couplings generated by SU(2) x U(1) gauge invariant dimension-6 effective operators, using the final b-quark momentum distribution in gamma gamma -> tt -> bX. Taking into account non-standard tt gamma, tbW and gamma gamma H couplings, we perform an optimal-observable analysis in order to estimate the precision for the determination of all relevant non-standard couplings.
Comments: 13 pages, LaTeX2e. Final version (one paper added to the ref.list and one person added to the ACKNOWLEDGMENTS) which is to appear in Phys.Lett.B