Optimal-Observable Analysis of Possible New Physics Using the b-quark in gamma gamma -> tt -> bX
arXiv:hep-ph/0403174 · doi:10.1016/j.physletb.2004.04.075
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.
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