Unified dark matter model in a singlet extension of the universal extra dimension model

被引:22
作者
Bai, Yang [1 ]
Han, Zhenyu [2 ]
机构
[1] Fermilab Natl Accelerator Lab, Dept Theoret Phys, Batavia, IL 60510 USA
[2] Univ Calif Davis, Dept Phys, Davis, CA 95616 USA
来源
PHYSICAL REVIEW D | 2009年 / 79卷 / 09期
基金
美国能源部;
关键词
cosmic ray energy spectra; cosmology; dark matter; electrons; galaxies; neutrinos; standard model; ENERGIES; HIGGS;
D O I
10.1103/PhysRevD.79.095023
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We propose a dark matter model with standard model singlet extension of the universal extra dimension model to explain the recent observations of ATIC, PPB-BETS, PAMELA, and DAMA. Other than the standard model fields propagating in the bulk of a five-dimensional space, one fermion field and one scalar field are introduced and both are standard model singlets. The zero mode of the new fermion is identified as the right-handed neutrino, while its first Klein-Kaluza (KK) mode is the lightest KK-odd particle and the dark matter candidate. The cosmic ray spectra from ATIC and PPB-BETS determine the dark matter particle mass and hence the fifth dimension compactification scale to be 1.0-1.6 TeV. The zero mode of the singlet scalar field with a mass below 1 GeV provides an attractive force between dark matter particles, which allows a Sommerfeld enhancement to boost the annihilation cross section in the Galactic halo to explain the PAMELA data. The DAMA annual modulation results are explained by coupling the same scalar field to the electron via a higher-dimensional operator. We analyze the model parameter space that can satisfy the dark matter relic abundance and accommodate all the dark matter detection experiments. We also consider constraints from the diffuse extragalactic gamma-ray background, which can be satisfied if the dark matter particle and the first KK mode of the scalar field have highly degenerate masses.
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页数:8
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共 57 条
[31]   U-boson production in e+e- annihilations, ψ and Υ decays, and light dark matter [J].
Fayet, Pierre .
PHYSICAL REVIEW D, 2007, 75 (11)
[32]   PAMELA positron excess as a signal from the hidden sector [J].
Feldman, Daniel ;
Liu, Zuowei ;
Nath, Pran .
PHYSICAL REVIEW D, 2009, 79 (06)
[33]   Leptophilic dark matter [J].
Fox, Patrick J. ;
Poppitz, Erich .
PHYSICAL REVIEW D, 2009, 79 (08)
[34]   New determination of the fine structure constant from the electron g value and QED (vol 97, pg 030802, 2006) [J].
Gabrielse, G. ;
Hanneke, D. ;
Kinoshita, T. ;
Nio, M. ;
Odom, B. .
PHYSICAL REVIEW LETTERS, 2007, 99 (03)
[35]   New determination of the fine structure constant from the electron g value and QED [J].
Gabrielse, G. ;
Hanneke, D. ;
Kinoshita, T. ;
Nio, M. ;
Odom, B. .
PHYSICAL REVIEW LETTERS, 2006, 97 (03)
[36]   The first WIMPy halos [J].
Green, AM ;
Hofmann, S ;
Schwarz, DJ .
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS, 2005, (08) :41-71
[37]   3 EXCEPTIONS IN THE CALCULATION OF RELIC ABUNDANCES [J].
GRIEST, K ;
SECKEL, D .
PHYSICAL REVIEW D, 1991, 43 (10) :3191-3203
[38]  
HARNIK R, PHYS REV D IN PRESS
[39]   Nonperturbative effect on dark matter annihilation and gamma ray signature from the galactic center [J].
Hisano, J ;
Matsumoto, S ;
Nojiri, MM ;
Saito, O .
PHYSICAL REVIEW D, 2005, 71 (06) :1-25
[40]   Damping scales of neutralino cold dark matter -: art. no. 083507 [J].
Hofmann, S ;
Schwarz, DJ ;
Stöcker, H .
PHYSICAL REVIEW D, 2001, 64 (08)