Eur. Phys. J. C (2017) 77: 593
https://doi.org/10.1140/epjc/s10052-017-5164-3

Regular Article - Theoretical Physics

Hidden spin-3/2 field in the standard model

¹ Department of Physics, İzmir Institute of Technology, 35430, Urla, Izmir, Turkey
² TÜBİTAK National Metrology Institute, 41470, Gebze, Kocaeli, Turkey

^* e-mail: ozansargin@iyte.edu.tr

Received: 13 February 2017
Accepted: 25 August 2017
Published online: 8 September 2017

Abstract

Here we show that a massive spin-3/2 field can hide in the SM spectrum in a way revealing itself only virtually. We study collider signatures and loop effects of this field, and determine its role in Higgs inflation and its potential as dark matter. We show that this spin-3/2 field has a rich linear collider phenomenology and motivates consideration of a neutrino–Higgs collider. We also show that the study of Higgs inflation, dark matter and dark energy can reveal more about the neutrino and dark sector.