Sub-MeV self-interacting dark matter

被引：9

作者：

Chauhan, Bhavesh ^{[1
,2
]}

机构：

[1] Phys Res Lab, Ahmadabad 380009, Gujarat, India

[2] Indian Inst Technol Gandhinagar, Palaj 382355, Gandhinagar, India

来源：

PHYSICAL REVIEW D | 2018年 / 97卷 / 12期

关键词：

COSMOLOGICAL SIMULATIONS; MIRROR PARTICLES; SECTOR; HALOS;

D O I：

10.1103/PhysRevD.97.123017

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

In this paper, we present a model for sub-MeV dark matter with strong self-interactions which can solve some of the small-scale crisis of the Lambda CDM. The dark matter is a Majorana fermion with only off-diagonal interactions with a hidden U(1)(D) gauge boson. The relic density is obtained by freeze-out of Boltzmann suppressed annihilations to a light fermionic species. The self-interaction is a one-loop process and constrained to be between 0.1 to 1 cm(2)/g. Severe constraints from the BBN on N-eff require that the dark and visible sector are not in thermal equilibrium during freeze-out. The effect of this temperature asymmetry is studied.

引用

页数：8

共 67 条

[1] Planck 2015 results XIII. Cosmological parameters [J].

Ade, P. A. R. ;

Aghanim, N. ;

Arnaud, M. ;

Ashdown, M. ;

Aumont, J. ;

Baccigalupi, C. ;

Banday, A. J. ;

Barreiro, R. B. ;

Bartlett, J. G. ;

Bartolo, N. ;

Battaner, E. ;

Battye, R. ;

Benabed, K. ;

Benoit, A. ;

Benoit-Levy, A. ;

Bernard, J. -P. ;

Bersanelli, M. ;

Bielewicz, P. ;

Bock, J. J. ;

Bonaldi, A. ;

Bonavera, L. ;

Bond, J. R. ;

Borrill, J. ;

Bouchet, F. R. ;

Boulanger, F. ;

Bucher, M. ;

Burigana, C. ;

Butler, R. C. ;

Calabrese, E. ;

Cardoso, J. -F. ;

Catalano, A. ;

Challinor, A. ;

Chamballu, A. ;

Chary, R. -R. ;

Chiang, H. C. ;

Chluba, J. ;

Christensen, P. R. ;

Church, S. ;

Clements, D. L. ;

Colombi, S. ;

Colombo, L. P. L. ;

Combet, C. ;

Coulais, A. ;

Crill, B. P. ;

Curto, A. ;

Cuttaia, F. ;

Danese, L. ;

Davies, R. D. ;

Davis, R. J. ;

de Bernardis, P. .

ASTRONOMY & ASTROPHYSICS, 2016, 594

[2]

Aguilar A, 2001, PHYS REV D, V64, DOI 10.1103/PhysRevD.64.112007

[3] Limits on Spin-Dependent WIMP-Nucleon Cross Section Obtained from the Complete LUX Exposure [J].

Akerib, D. S. ;

Alsum, S. ;

Araujo, H. M. ;

Bai, X. ;

Bailey, A. J. ;

Balajthy, J. ;

Beltrame, P. ;

Bernard, E. P. ;

Bernstein, A. ;

Biesiadzinski, T. P. ;

Boulton, E. M. ;

Bras, P. ;

Byram, D. ;

Cahn, S. B. ;

Carmona-Benitez, M. C. ;

Chan, C. ;

Chiller, A. A. ;

Chiller, C. ;

Currie, A. ;

Cutter, J. E. ;

Davison, T. J. R. ;

Dobi, A. ;

Dobson, J. E. Y. ;

Druszkiewicz, E. ;

Edwards, B. N. ;

Faham, C. H. ;

Fallon, S. R. ;

Fiorucci, S. ;

Gaitskell, R. J. ;

Gehman, V. M. ;

Ghag, C. ;

Gilchriese, M. G. D. ;

Hall, C. R. ;

Hanhardt, M. ;

Haselschwardt, S. J. ;

Hertel, S. A. ;

Hogan, D. P. ;

Horn, M. ;

Huang, D. Q. ;

Ignarra, C. M. ;

Jacobsen, R. G. ;

Ji, W. ;

Kamdin, K. ;

Kazkaz, K. ;

Khaitan, D. ;

Knoche, R. ;

Larsen, N. A. ;

Lee, C. ;

Lenardo, B. G. ;

Lesko, K. T. .

PHYSICAL REVIEW LETTERS, 2017, 118 (25)

[4] Composite inelastic dark matter [J].

Alves, Daniele S. M. ;

Behbahani, Siavosh R. ;

Schuster, Philip ;

Wacker, Jay G. .

PHYSICS LETTERS B, 2010, 692 (05) :323-326

[5]

[Anonymous], J COSMOL ASTROPART P

[6]

[Anonymous], ARXIV13010952

[7]

[Anonymous], ARXIV170501987

[8] Dark Matter Coannihilation with a Lighter Species [J].

Berlin, Asher .

PHYSICAL REVIEW LETTERS, 2017, 119 (12)

[9] Thermal dark matter from a highly decoupled sector [J].

Berlin, Asher ;

Hooper, Dan ;

Krnjaic, Gordan .

PHYSICAL REVIEW D, 2016, 94 (09)

[10] PeV-scale dark matter as a thermal relic of a decoupled sector [J].

Berlin, Asher ;

Hooper, Dan ;

Krnjaic, Gordan .

PHYSICS LETTERS B, 2016, 760 :106-111

← 1 2 3 4 5 6 7 →