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The $Z \rightarrow \gamma \gamma,\;gg$ decays in the non-commutative standard model

Authors:	Email author" target="_blank">W?Behr Email author N?G?Deshpande G?Duplancic P?Schupp J?Trampetic J?Wess

Institution:	1.Theoretische Physik,Universit?t München,München,Germany;2.Institute of Theoretical Science,University of Oregon,Eugene,USA;3.Theoretical Physics Division,Rudjer Boskovic Institute,Zagreb,Croatia;4.Theoretical Physics Division,International University Bremen,Bremen,Germany;5.Theoretical Physics Division,Rudjer Boskovic Institute,Zagreb,Croatia;6.Theory Division,CERN,Geneva 23,Switzerland;7.Theoretische Physik,Universit?t München,München,Germany;8.Theoretische Physik,Max-Planck-Institut für Physik,München,Germany

Abstract:	On non-commutative spacetime, the standard model (SM) allows new, usually SM forbidden, triple gauge boson interactions to occur. In this letter we propose the SM strictly forbidden $Z\rightarrow \gamma\gamma$ and $Z\rightarrow gg$ decay modes coming from the gauge sector of the non-commutative standard model (NCSM) as a place where non-commutativity could be experimentally discovered. Received: 2 July 2002, Revised: 28 February 2003, Published online: 18 June 2003

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