61 citations · 75 across the 16 of their papers we have counts for
16 papers
Searching for the -naturalness tower of neutrinos
Sofia Lonardi, Manuel Ettengruber, Philipp Eller
We present the first experimental search for the -naturalness tower of neutrinos using a global analysis of publicly available neutrino data. As a potential solution to the hier…
Observing Micro Black Hole Dark Matter
Manuel Ettengruber, Florian Kühnel
Primordial micro black holes can constitute dark matter if short-distance gravity is modified by extra dimensions or a large number of species and if the memory-burden effect suffi…
Landscapes at Colliders
Raffaele Tito D'Agnolo, Manuel Ettengruber, Lian-Tao Wang
Theories with a large number of long-lived metastable vacua are our only concrete explanation for the puzzling value of the Cosmological Constant (CC). The energy scales where thes…
New Tests of Low-Scale Quantum Gravity with Cosmic-Ray Collisions
Manuel Ettengruber, Gonzalo Herrera
Cosmic ray collisions at high center of mass energy could enable graviton and black hole production as expected in theories of low-scale quantum gravity, such as extra-dimensions,…
A neutrino data analysis of extra-dimensional theories with massive bulk fields
Philipp Eller, Manuel Ettengruber, Alan Zander
We present a global neutrino oscillation analysis of models with a single large extra dimension in which right-handed neutrinos possess bulk Dirac masses. Two scenarios are conside…
Micro Black Hole Dark Matter
Manuel Ettengruber, Florian Kuhnel
The influence of a possible low gravity scale, concretely through the presence of extra dimensions or additional species, on radiation properties of micro black holes is investigat…
Neutrino Theory in the Precision Era
Asmaa Abada, Gabriela Barenboim, Toni Bertólez-Martínez +76
This document summarises discussions on future directions in theoretical neutrino physics, which are the outcome of a neutrino theory workshop held at CERN in February 2025. The st…
Neutrino Masses and Phenomenology in Nnaturalness
Manuel Ettengruber
In this paper, it is shown that naturalness scenarios share the intrinsic mechanism to suppress neutrino masses with other infrared neutrino mass models. In such models like ext…
Constraints on non-unitary neutrino mixing in light of atmospheric and reactor neutrino data
Tetiana Kozynets, Philipp Eller, Alan Zander +2
While the origin of neutrino masses remains unknown, several key neutrino mass generation models result in a non-unitary three-neutrino mixing matrix. To put such models to test, t…
Testing the Number of Neutrino Species with a Global Fit of Neutrino Data
Manuel Ettengruber, Alan Zander, Philipp Eller
We present the first experimental constraints on models with many additional neutrino species in an analysis of current neutrino data. These types of models are motivated as a solu…
Kaluza-Klein Spectroscopy from Neutron Oscillations into Hidden Dimensions
Gia Dvali, Manuel Ettengruber, Anja Stuhlfauth
Neutrons and neutrinos are natural probes for new physics. Since they carry no conserved gauge quantum numbers, both can easily mix with the fermions from hidden sectors. A particu…
How Many Dark Neutrino Sectors Does Cosmology Allow?
Alan Zander, Manuel Ettengruber, Philipp Eller
We present the very first constraints on the number of Standard Model (SM) copies with an additional Dirac right-handed neutrino. From cosmology, we are able to pose strong limits…
Consequences of Multiple Axions in Theories with Dark Yang-Mills Groups
Manuel Ettengruber, Emmanouil Koutsangelas
General consistency requirements of Quantum Gravity demand the existence of one axion per Yang-Mills group. In this work, we consider theories with dark Yang-Mills sectors and inve…
Discovering neutrinoless double-beta decay in the era of precision neutrino cosmology
Manuel Ettengruber, Matteo Agostini, Allen Caldwell +2
We evaluate the discovery probability of a combined analysis of proposed neutrinoless double-beta decay experiments in a scenario with normal ordered neutrino masses. The discovery…
Neutrino Physics in TeV Scale Gravity Theories
Manuel Ettengruber
In this paper, the general features of the neutrino sector in TeV scale quantum gravity theories, such as ADD and Many Species Theory, is investigated. This class of theories has a…
A Global Bayesian Analysis of Neutrino Mass Data
Allen Caldwell, Manuel Ettengruber, Alexander Merle +2
We perform a global Bayesian analysis of currently available neutrino data, putting data from oscillation experiments, neutrinoless double beta decay (), and precision cosmol…