Radiative Neutrino Mass Generation and Dark Matter - Institute for ...
Radiative Neutrino Mass Generation and Dark Matter - Institute for ...
Radiative Neutrino Mass Generation and Dark Matter - Institute for ...
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<strong>Dark</strong> <strong>Matter</strong>Non-thermal ProductionNon-thermal production of DM arXiv:0810.4147· a metastable particle (χ 2 ) decays into DM (χ 1 )· simuletaneous Boltzmann equationdY 1dzdY 2dz= − Γ A1Y 1eqHz= − Γ A2Y 2eqHz[ ( ) ] 2 Y1−1Y 1eq[ ( ) ] 2 Y2−1Y 2eq+N decΓ 2Hz Y 2− Γ 2Hz Y 210 0 10 -2 10 0 10 2 10 4 10 6 10 8Y i = n i (z)/s(z)10 -210 -410 -610 -810 -1010 -1210 -1410 -16z = m 1 /TY 1Y 1eqY 2χ 2 → N dec χ 1 +XY 2eq〈σv〉 > 3×10 −26 [cm 3 /s]m 1 = 130 [GeV]m 2 = 300 [GeV] = 3.0x10 -25 [GeV -2 ] = 3.0x10 -26 [GeV -2 ]Γ 2 = 1.0x10 -24 [GeV]Γ −12 0.1 sExplaination of the positron<strong>and</strong> gamma-ray excess incosmic-ray observations?Takashi Toma (IPPP) Internal Seminar 7th June 2013 12 / 34
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