Zobrazeno 1 - 10
of 74
pro vyhledávání: '"Yun, Seokhoon"'
Utilizing a helical magnet profile to enhance axion-photon conversion showed great promise in laboratory searches for high axion masses. We extend the mechanism, known as the axion-magnetic resonance (AMR), from laser experiments to axion helioscopes
Externí odkaz:
http://arxiv.org/abs/2408.11103
Light hypothetical particles with masses up to $\mathcal{O}(100)\ {\rm MeV}$ can be produced in the core of supernovae. Their subsequent decays to neutrinos can produce a flux component with higher energies than the standard flux. We study the impact
Externí odkaz:
http://arxiv.org/abs/2312.13627
We identify a new resonance, axion magnetic resonance (AMR), that can greatly enhance the conversion rate between axions and photons. A series of axion search experiments rely on converting them into photons inside a constant magnetic field backgroun
Externí odkaz:
http://arxiv.org/abs/2308.10925
Publikováno v:
JHEP12(2023)091
Solar nuclear reactions can occasionally produce sub-MeV elusive beyond the Standard Model particles that escape the solar interior without further interactions. This study focuses on massive spin-one particles. We construct the general theoretical f
Externí odkaz:
http://arxiv.org/abs/2305.14420
Autor:
Shin, Chang Sub, Yun, Seokhoon
The hot, neutron-rich, and dense circumstance in core-collapse supernovae provides a source of negatively charged pions that may make up a significant portion of the matter. These abundant thermal pions can play a role to populate light and hidden hy
Externí odkaz:
http://arxiv.org/abs/2211.15677
Autor:
Xu, Ling-Xiao, Yun, Seokhoon
We propose an alternative scenario for the axion misalignment mechanism based on the nontrivial interplay between the axion and a light dilaton in the early universe. Dark matter abundance is still sourced by the initial misalignment of the axion fie
Externí odkaz:
http://arxiv.org/abs/2211.13074
Autor:
D'Eramo, Francesco, Di Valentino, Eleonora, Giarè, William, Hajkarim, Fazlollah, Melchiorri, Alessandro, Mena, Olga, Renzi, Fabrizio, Yun, Seokhoon
Publikováno v:
JCAP 09 (2022) 022
We revisit the joint constraints in the mixed hot dark matter scenario in which both thermally produced QCD axions and relic neutrinos are present. Upon recomputing the cosmological axion abundance via recent advances in the literature, we improve th
Externí odkaz:
http://arxiv.org/abs/2205.07849
Autor:
Chun, Eung Jin, Yun, Seokhoon
Publikováno v:
Phys. Rev. D 106 (2022), 095027
Interactions with a background medium modify in general the dispersion relation and canonical normalization of propagating particles. This can have an important phenomenological consequence when considering light dark matter coupling to quarks and le
Externí odkaz:
http://arxiv.org/abs/2205.03617
Autor:
D'Eramo, Francesco, Yun, Seokhoon
Publikováno v:
Phys. Rev. D 105 (2022), 075002
Flavor violating axion couplings can be in action before recombination, and they can fill the early universe with an additional radiation component. Working within a model-independent framework, we consider an effective field theory for the axion fie
Externí odkaz:
http://arxiv.org/abs/2111.12108
Autor:
Shin, Chang Sub, Yun, Seokhoon
We discuss the dark gauge boson emission from neutron stars via nucleon-nucleon bremsstrahlung. Through the rigorous treatment of the effective field theory prescription and the thermal effect, we derive the relevant couplings of dark gauge bosons to
Externí odkaz:
http://arxiv.org/abs/2110.03362