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67 papers · 1 filter
Constraints on small-scale primordial power by annihilation signals from extragalactic dark matter minihalos
Tomohiro Nakama, Teruaki Suyama, Kazunori Kohri +1
We revisit constraints on small-scale primordial power from annihilation signals from dark matter minihalos. Using gamma rays and neutrinos from extragalactic minihalos and assumin…
Construction of KAGRA: an Underground Gravitational Wave Observatory
T. Akutsu, M. Ando, S. Araki +222
Major construction and initial-phase operation of a second-generation gravitational-wave detector KAGRA has been completed. The entire 3-km detector is installed underground in a m…
Indirect dark matter searches in the dwarf satellite galaxy Ursa Major II with the MAGIC Telescopes
MAGIC Collaboration, M. L. Ahnen, S. Ansoldi +142
The dwarf spheroidal galaxy Ursa Major II (UMaII) is believed to be one of the most dark-matter dominated systems among the Milky Way satellites and represents a suitable target fo…
Non-unitary evolution of neutrinos in matter and the leptonic unitarity test
Chee Sheng Fong, Hisakazu Minakata, Hiroshi Nunokawa
We present a comprehensive study of the three-active plus sterile neutrino model as a framework for constraining leptonic unitarity violation induced at energy scales much lowe…
A Measurement of the Tau Neutrino Cross Section in Atmospheric Neutrino Oscillations with Super-Kamiokande
Kamiokande Collaboration, Z. Li, K. Abe +160
Using 5,326 days of atmospheric neutrino data, a search for atmospheric tau neutrino appearance has been performed in the Super-Kamiokande experiment. Super-Kamiokande measures the…
Oscillons from Pure Natural Inflation
Jeong-Pyong Hong, Masahiro Kawasaki, Masahito Yamazaki
We examine the oscillon formation in a recently proposed inflation model of the pure natural inflation, where the inflaton is an axion that couples to a strongly-coupled pure Yang-…