82 citations · 265 across the 5 of their papers we have counts for
5 papers
Effects of Dark Matter Annihilation on the Cosmic Microwave Background
Toru Kanzaki, Masahiro Kawasaki, Kazunori Nakayama
We study the effects of dark matter annihilation during and after the cosmic recombination epoch on the cosmic microwave background anisotropy, taking into account the detailed ene…
Electron and Photon Energy Deposition in Universe
Toru Kanzaki, Masahiro Kawasaki
We consider energy deposition of high energy electrons and photons in universe. We carry out detailed calculations of fractions of the initial energy of the injected electron or ph…
Cosmological Constraints on Neutrino Injection
Toru Kanzaki, Masahiro Kawasaki, Kazunori Kohri +1
We derive general constraints on the relic abundances of a long-lived particle which mainly decays into a neutrino (and something else) at cosmological time scales. Such an exotic…
Cosmological Constraints on Gravitino LSP Scenario with Sneutrino NLSP
Toru Kanzaki, Masahiro Kawasaki, Kazunori Kohri +1
We study the scenario where a sneutrino is the next lightest supersymmetric particle (NLSP) and decays into a gravitino and standard model particles. The daughter particles such as…
CMB constraints on the fine structure constant
Kazuhide Ichikawa, Toru Kanzaki, Masahiro Kawasaki
We study constraints on time variation of the fine structure constant alpha from cosmic microwave background (CMB) taking into account simultaneous change in alpha and the electron…