Asymmetric dark matter and effective number of neutrinos

被引：4

作者：

Kitabayashi, Teruyuki ^{[1
]}

Kurosawa, Yoshihiro ^{[1
]}

机构：

[1] Tokai Univ, Dept Phys, 4-1-1 Kitakaname, Hiratsuka, Kanagawa 2591292, Japan

来源：

PHYSICAL REVIEW D | 2016年 / 93卷 / 03期

关键词：

STABLE PARTICLES; ANNIHILATIONS; BARYON; LIMITS;

D O I：

10.1103/PhysRevD.93.033002

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We study the effect of the MeV-scale asymmetric dark matter annihilation on the effective number of neutrinos N-eff at the epoch of the big bang nucleosynthesis. If the asymmetric dark matter chi couples more strongly to the neutrinos nu than to the photons gamma and electrons e(-), Gamma(chi gamma,chi e) << Gamma(chi nu), or Gamma(chi gamma,chi e) >> Gamma(chi nu), the lower mass limit on the asymmetric dark matter is about 18 MeV for N-eff similar or equal to 3.0.

引用

页数：14

共 81 条

[61] TECHNOCOSMOLOGY - COULD A TECHNIBARYON EXCESS PROVIDE A NATURAL MISSING MASS CANDIDATE [J].

NUSSINOV, S .

PHYSICS LETTERS B, 1985, 165 (1-3) :55-58

[62]

Nussinov S., 2007, J HIGH ENERGY PHYS, V05, P017

[63] REVIEW OF PARTICLE PHYSICS Particle Data Group [J].

Olive, K. A. ;

Agashe, K. ;

Amsler, C. ;

Antonelli, M. ;

Arguin, J. -F. ;

Asner, D. M. ;

Baer, H. ;

Band, H. R. ;

Barnett, R. M. ;

Basaglia, T. ;

Bauer, C. W. ;

Beatty, J. J. ;

Belousov, V. I. ;

Beringer, J. ;

Bernardi, G. ;

Bethke, S. ;

Bichsel, H. ;

Biebel, O. ;

Blucher, E. ;

Blusk, S. ;

Brooijmans, G. ;

Buchmueller, O. ;

Burkert, V. ;

Bychkov, M. A. ;

Cahn, R. N. ;

Carena, M. ;

Ceccucci, A. ;

Cerri, A. ;

Chakraborty, D. ;

Chen, M. -C. ;

Chivukula, R. S. ;

Copic, K. ;

Cowan, G. ;

Dahl, O. ;

D'Ambrosio, G. ;

Damour, T. ;

de Florian, D. ;

de Gouvea, A. ;

DeGrand, T. ;

de Jong, P. ;

Dissertori, G. ;

Dobrescu, B. A. ;

Doser, M. ;

Drees, M. ;

Dreiner, H. K. ;

Edwards, D. A. ;

Eidelman, S. ;

Erler, J. ;

Ezhela, V. V. ;

Fetscher, W. .

CHINESE PHYSICS C, 2014, 38 (09)

[64] Dipolar dark matter in light of the 3.5 keV x-ray line, neutrino mass, and LUX data [J].

Patra, Sudhanwa ;

Sahoo, Nirakar ;

Sahu, Narendra .

PHYSICAL REVIEW D, 2015, 91 (11)

[65] The galactic 511 keV line from electroweak scale WIMPs [J].

Pospelov, Maxim ;

Ritz, Adam .

PHYSICS LETTERS B, 2007, 651 (2-3) :208-215

[66] Particle Dark Matter Searches Outside the Local Group [J].

Regis, Marco ;

Xia, Jun-Qing ;

Cuoco, Alessandro ;

Branchini, Enzo ;

Fornengo, Nicolao ;

Viel, Matteo .

PHYSICAL REVIEW LETTERS, 2015, 114 (24)

[67]

Riemer-Sorensen S., 2013, PASA, V30, P11

[68]

Sameth A. G., 2015, PHYS REV LETT, V115

[69] CORRECTION [J].

SCHERRER, RJ .

PHYSICAL REVIEW D, 1986, 34 (10) :3263-3263

[70] Lepton asymmetry and the cosmic QCD transition [J].

Schwarz, Dominik J. ;

Stuke, Maik .

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS, 2009, (11)

← 1 2 3 4 5 6 7 8 9 →