Johan Alwall, Mazin Khader, Arvind Rajaraman, Daniel Whiteson, Michael Yen
The production and decay of a new heavy vector boson, a chromophilic $Z'$
vector boson, is described. The chromophilic $Z'$ couples only to two gluons,
but its two-body decays are absent, leading to a dominant decay mode of
$Z'\rightarrow q\bar{q}g$. The unusual nature of the interaction predicts a
cross-section which grows with $m_{Z'}$ for a fixed coupling and an
accompanying gluon with a coupling that rises with its energy. We study the
$t\bar{t}g$ decay mode, proposing distinct reconstruction techniques for the
observation of an excess and for the measurement of $m_{Z'}$. We estimate the
sensitivity of current experimental datasets.
View original:
http://arxiv.org/abs/1202.4014
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