# ICHEP 2016 Chicago

3-10 August 2016
Chicago IL USA
US/Central timezone
There is a live webcast for this event.

## Naturalness and light higgsinos: a powerful reason to build ILC (15' + 5')

6 Aug 2016, 10:00
20m
Chicago 7 ()

### Chicago 7

Oral Presentation Beyond the Standard Model

### 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.

### Primary 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)

### Presentation Materials

###### Your browser is out of date!

Update your browser to view this website correctly. Update my browser now

×