Departmental Bulletin Paper 化学ポテンシャルを持つMeVダークマターと有効ニュートリノ数 

黒澤, 吉博  ,  北林, 照幸

50pp.73 - 80 , 2015-03-20 , 東海大学理学部 , Tokai University. School of Science , 東海大学出版部
We show that large chemical potentials of MeV dark matter yield significant reduction of the effective number of neutrinos in a multi-compornent MeV dark matter scenario. If there are keV dark matter and/or sterile neutrinos, the effective number of neutrinos can be consistent with the cosmological data.

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