Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1995-06-27
Phys.Lett.B359:369-374,1995
Physics
High Energy Physics
High Energy Physics - Phenomenology
Latex, 11 pages, 1 figure (not included). One compressed postscript file of the paper available at ftp://ftp.kek.jp/kek/prep
Scientific paper
10.1016/0370-2693(95)01094-7
We probe the top-quark electric dipole moment (EDM) in top-quark pair production via photon-photon fusion at a photon linear collider. We show how linearly-polarized photon beams can be used to extract information on the top-quark EDM without the use of complicated angular correlations of top-quark decay products. If the luminosity of the laser back-scattered photon-photon collisions is comparable to that of the $e^+e^-$ collisions, then the measurement of the top-quark EDM obtained by counting top-quark-production events in photon fusion can be as accurate as the measurement obtained by studying the $t\bar{t}$ decay correlations in $e^+e^-$ collisions using a perfect detector.
Choi Yong-Sang
Hagiwara Kaoru
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