Speakers
Howard Baer
(University of Oklahoma)Dr
Jenny List
(DESY)
Description
A core prediction of natural Supersymmetry is the
existence of four light Higgsinos not too far above the
mass of the $Z$ boson. The small mass splittings amongst
the Higgsinos--typically 5-20 GeV--
implies very little visible energy release from decays of heavier
Higgsinos.
In particular, if other SUSY particles are quite heavy,
as can be the case in SUSY with radiatively-driven naturalness,
the Higgsinos are extremely hard to detect at hadron
colliders. The clean environment of electron-positron
colliders with $E>2m(higgsino)$, however, would allow for a decisive
search for the required light Higgsinos.
Thus, $e^+e^-$ colliders should either discover or exclude natural SUSY.
We present a detailed study of Higgsino pair production at
the proposed International Linear $e^+e^-$ Collider which is under
consideration for construction in Japan.
A variety of precision measurements should allow for
extraction of underlying parameters and provide a window onto
physics at the grand unified scale.
Authors
Howard Baer
(University of Oklahoma)
Dr
Jenny List
(DESY)
Co-authors
Ms
Jackie Yan
(Tokyo)
Dr
Keisuke Fujii
(KEK)
Dr
Mikael Berggren
(DESY)
Ms
Suvi Lehtinen
(DESY)
Dr
Tomohiko Tanabe
(Tokyo)
