On a $Z^{\prime }$ signature at next high energy electron-positron colliders

Abstract

The associated production of a $Z^{\prime }$ and a final hard photon in high energy electron-positron colliders is studied. It is shown that the hard photon spectrum contains useful information on the $Z^{\prime }$ properties. This remark suggests that, if a new neutral gauge boson exists for $M_{Z^{\prime }}<\sqrt{s}$, it will not be necessary to make a new energy run at the $Z^{\prime }$ mass in order to get most of its properties.

arXiv comment10 pages and 7 figures

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