Wednesday, May 1, 2013

1304.8037 (Kai-Feng Chen et al.)

When the Higgs meets the Top: Search for t --> ch^0 at the LHC    [PDF]

Kai-Feng Chen, Wei-Shu Hou, Chung Kao, Masaya Kohda
The Higgs boson h^0 and the top quark t are the two most massive and newest particles ever discovered. If t --> ch^0 occurs at the level of a percent or so, the observed ZZ^* and \gamma\gamma signal events may have accompanying cbW activity coming from t\bar{t} feeddown. A general two Higgs doublet model brings in new ct, cc and tt couplings that modify properties of the light Higgs h^0, and t --> ch^0 can be searched for via h^0 --> ZZ^*, \gamma\gamma, WW^* and b\bar{b} (even \tau^+\tau^-) modes in t\bar{t} events. Existing data might be able to show some clues for t --> ch^0 signature, or should provide important information for B(t --> ch^0) down to below the percent level.
View original: http://arxiv.org/abs/1304.8037

No comments:

Post a Comment