Speaker
Dr
Manuel Ettengruber
(german)
Description
The framework of TeV scale gravity theories was originally invented to solve the hierarchy problem. One specific BSM model is the Many Species Theory in which the scale of quantum gravity gets lowered by the existence of many additional light states. In this talk, we want to present how small neutrino masses can be generated in this infrared approach and how this modifies the oscillation pattern. Then we present how current neutrino data can be used to give a lower bound on the number of additional species. Moreover, we show how to get an upper bound from axion physics. These results give the first time a theoretically restricted parameter space that can be tested by current and future experiments.
Author
Dr
Manuel Ettengruber
(german)
Co-authors
Mr
Alan Zander
Dr
Emmanouil Koutsangelas
(german)
Dr
Philipp Eller
(german)