# Top quark electric dipole and $Z \gamma \gamma$ couplings at a photon collider

Poulose, P (2001) Top quark electric dipole and $Z \gamma \gamma$ couplings at a photon collider. In: Nuclear Instruments and Methods in Physics Research Section A: Accelerators,Spectrometers,Detectors and Associated Equipment, 472 (1-2). pp. 195-200.

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## Abstract

Effect of the top quark electric dipole coupling and the $Z_{\gamma\gamma}$ coupling is studied in the pair production of top quark at a photon collider using CP-violating symmetries. Our results show that with a photon collider of geometrical luminosity of $20 fb^{-1}$ it is possible to put limits of the order of 0.1 on the $Z_{\gamma\gamma}$ coupling and about $2.5 \times 10^{17}e$ cm on the top quark electric dipole coupling using these asymmetries.

Item Type: Journal Article Publisher Copyright of this article belongs to Elsevier. Electric dipole moment;Zyy coupling;Top quark;CP violation. Division of Physical & Mathematical Sciences > Centre for Theoretical Studies 26 Sep 2008 07:42 19 Sep 2010 04:50 http://eprints.iisc.ernet.in/id/eprint/16048