Zobrazeno 1 - 10
of 109
pro vyhledávání: '"Vogl, Stefan"'
Indirect detection is one of the most powerful methods to search for annihilating dark matter. In this work, we investigate the impact of non-perturbative effects in the indirect detection of dark matter. For this purpose we utilize a minimal model c
Externí odkaz:
http://arxiv.org/abs/2308.14594
Autor:
Astros, Maria Dias, Vogl, Stefan
Sterile neutrinos are well-motivated and simple dark matter (DM) candidates. However, sterile neutrino DM produced through oscillations by the Dodelson-Widrow mechanism is excluded by current $X$-ray observations and bounds from structure formation.
Externí odkaz:
http://arxiv.org/abs/2307.15565
Autor:
de Giorgi, Arturo, Vogl, Stefan
We study the freeze-in of gravitationally interacting dark matter in extra dimensions. Focusing on a minimal dark matter candidate that only interacts with the SM via gravity in a five-dimensional model we find that a large range of dark matter and K
Externí odkaz:
http://arxiv.org/abs/2208.03153
Autor:
Bollig, Julian, Vogl, Stefan
Publikováno v:
JCAP 10 (2022) 031
We explore the impact of non-perturbative effects, namely Sommerfeld enhancement and bound state formation, on the cosmological production of non-thermal dark matter. For this purpose, we focus on a class of simplified models with t-channel mediators
Externí odkaz:
http://arxiv.org/abs/2112.01491
Autor:
de Giorgi, Arturo, Vogl, Stefan
We study dark matter interacting via a massive spin-2 mediator. To have a consistent effective theory for the spin-2 particle, we work in a warped extra-dimensional model such that the mediator(s) are the Kaluza-Klein (KK) modes of the 5D graviton. W
Externí odkaz:
http://arxiv.org/abs/2105.06794
Autor:
Arcadi, Giorgio, Bally, Andreas, Goertz, Florian, Tame-Narvaez, Karla, Tenorth, Valentin, Vogl, Stefan
Publikováno v:
Phys. Rev. D 103, 023024 (2021)
We scrutinize the XENON1T electron recoil excess in the scalar-singlet-extended dark matter effective field theory. We confront it with various astrophysical and laboratory constraints both in a general setup and in the more specific, recently propos
Externí odkaz:
http://arxiv.org/abs/2007.08500
We systematically explore the phenomenology of the recently proposed extended dark matter effective field theory (\eDMEFT), which allows for a consistent effective description of DM scenarios across different energy scales. The framework remains appl
Externí odkaz:
http://arxiv.org/abs/2006.07174
Publikováno v:
Phys. Rev. D 101, 115001 (2020)
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 using data from terrestrial experiments. In this work we focus on additi
Externí odkaz:
http://arxiv.org/abs/2003.05339
Autor:
Biondini, Simone, Vogl, Stefan
We analyse the phenomenology of a simplified model for a real scalar dark matter candidate interacting with quarks via a coloured fermionic mediator. In the coannihilation regime, the dark matter abundance is controlled by the dynamics of the coloure
Externí odkaz:
http://arxiv.org/abs/1907.05766
Publikováno v:
Phys. Rev. D 100, 075024 (2019)
Minimal $SU(5)$ Grand Unified models predict massless neutrinos and struggle to achieve gauge coupling unification compatible with the observed lower limit on the proton lifetime. Both of these issues can be resolved by embedding minimal radiative ne
Externí odkaz:
http://arxiv.org/abs/1907.05328