R. Sekhar Chivukula, Pawin Ittisamai, Jing Ren, Elizabeth H. Simmons
LHC searches for the standard model Higgs Boson in \gamma\gamma\ or \tau\tau\
decay modes place strong constraints on the light technipion state predicted in
technicolor models that include colored technifermions. Compared with the
standard Higgs Boson, the technipions have an enhanced production rate (largely
because the technipion decay constant is smaller than the weak scale) and also
enhanced branching ratios into di-photon and di-tau final states (largely due
to the suppression of WW decays of the technipions). Recent ATLAS and CMS
searches for Higgs bosons exclude the presence of technipions with masses from
110 GeV to nearly 2m_t in technicolor models that (a) include colored
technifermions (b) feature topcolor dynamics and (c) have technicolor groups
with three or more technicolors (N_{TC} > 3).
View original:
http://arxiv.org/abs/1202.1505
No comments:
Post a Comment