264 citations · 2.1k across the 67 of their papers we have counts for
8 papers · 1 filter
Structure Formation Limits on Axion-Like Dark Matter
Sven Baumholzer, Vedran Brdar, Enrico Morgante
We derive structure formation limits on dark matter (DM) composed of keV-scale axion-like particles (ALPs), produced via freeze-in through the interactions with photons and Standar…
Axion-like Particles at Future Neutrino Experiments: Closing the "Cosmological Triangle"
Vedran Brdar, Bhaskar Dutta, Wooyoung Jang +5
Axion-like particles (ALPs) provide a promising direction in the search for new physics, while a wide range of models incorporate ALPs. We point out that future neutrino experiment…
Has NANOGrav found first evidence for cosmic strings?
Simone Blasi, Vedran Brdar, Kai Schmitz
The North American Nanohertz Observatory for Gravitational Waves (NANOGrav) has recently reported strong evidence for a stochastic common-spectrum process affecting the pulsar timi…
Heavy Dark Matter, Neutrino Masses and Higgs Naturalness from a Strongly Interacting Hidden Sector
Mayumi Aoki, Vedran Brdar, Jisuke Kubo
We consider the extension of the Standard Model (SM) with a strongly interacting QCD-like hidden sector, at least two generations of right-handed neutrinos and one scalar singlet.…
The Neutrino Magnetic Moment Portal: Cosmology, Astrophysics, and Direct Detection
Vedran Brdar, Admir Greljo, Joachim Kopp +1
We revisit the physics of neutrino magnetic moments, focusing in particular on the case where the right-handed, or sterile, neutrinos are heavier (up to several MeV) than the left-…
Model Independent Bounds on the Non-Oscillatory Explanations of the MiniBooNE Excess
Vedran Brdar, Oliver Fischer, Alexei Yu. Smirnov
We consider the non-oscillatory explanations of the low energy excess of events detected by MiniBooNE. We present a systematic search for phenomenological scenarios based on new ph…
Fingerprint of Low-Scale Leptogenesis in the Primordial Gravitational-Wave Spectrum
Simone Blasi, Vedran Brdar, Kai Schmitz
The dynamical generation of right-handed-neutrino (RHN) masses in the early Universe naturally entails the formation of cosmic strings that give rise to an observable signal in gra…
Revisiting Neutrino Self-Interaction Constraints from and decays
Vedran Brdar, Manfred Lindner, Stefan Vogl +1
Given the elusive nature of neutrinos, their self-interaction is particularly difficult to probe. Nevertheless, upper limits on the strength of such an interaction can be set by us…