Speaker
Prof.
Ivica Picek
(Phys. Dept., University of Zagreb)
Description
We study the phenomenology of
Dirac fermion 5-plets leading to the tree-level seesaw different from
standard type I and III. They give rise to the seesaw formula m_{nu} ~ v^6/M^5
which reproduces masses for light neutrinos m_{nu} ~ 10^{-1} eV by M > TeV new states, testable at the LHC.
Their Drell-Yan production rates are enhanced due to the
enlarged effective gauge couplings, and their tree-level cascade decays are opened by enlarged
mass splittings within a multiplet.
Specific decays, including
a distinguished triply charged $\Sigma^{+++}$ into $W^+ W^+ l^+$
channel with specific decay signature, may be accessible already at present
$\sqrt{s}=7$ TeV and 1fb$^{-1}$ of data.
Authors
Mr
Branimir Radovcic
(Phys. Dept., University of Zagreb)
Prof.
Ivica Picek
(Phys. Dept., University of Zagreb)
Dr
Kresimir Kumericki
(Phys. Dept., University of Zagreb)
