Speaker
Dr
Tao Liu
(Department of Physics, UC@Santa Barbara)
Description
We discovered a benchmark scenario in the NMSSM which
possesses novel Higgs and dark matter (DM) properties.
There naturally co-exist three light singlet-like particles
in this scenario: a scalar, a pseudoscalar, and their superpartner,
all with masses of order 0.1-10 GeV. New non-standard
decay channel is opened for the Standard Model (SM)-like
Higgs boson, while its pair-decays to the light scalars or
pseudoscalars are generically suppressed. This will dramatically
change our search strategies for the SM-like and light Higgs
bosons at colliders. In addition, this scenario is characterized
by a light siglino-like DM candidate (~ 1-10 GeV). For a
certain parameter window annihilation into the light pseudoscalar
and exchange of the light scalar with nucleons allow the singlino
to achieve the correct relic density and a (spin-independent)
direct detection cross section as large as 10^{-40} cm2
simultaneously, which is accessible to the current direct detections
(e.g., CoGeNT and DAMA) or the ones in the near future.
Primary author
Dr
Tao Liu
(Department of Physics, UC@Santa Barbara)
Co-authors
Prof.
Carlos Wagner
(University of Chicago)
Dr
Hao Zhang
(Peking Univ.)
Prof.
Liantao Wang
(University of Chicago)
Dr
Patrick Draper
(UC, Santa Cruz)