Asymmetric accidental composite dark matter

被引:7
|
作者
Bottaro, Salvatore [1 ,2 ]
Costa, Marco [1 ,2 ]
Popov, Oleg [1 ,3 ]
机构
[1] Scuola Normale Super Pisa, Piazza Cavalieri 7, I-56126 Pisa, Italy
[2] INFN Sez Pisa, Largo B Pontecorvo 3, I-56127 Pisa, Italy
[3] Korea Adv Inst Sci & Technol, Dept Phys, 291 Daehak Ro, Daejeon 34141, South Korea
基金
新加坡国家研究基金会;
关键词
Beyond Standard Model; Cosmology of Theories beyond the SM; CP violation; Technicolor and Composite Models; COSMOLOGICAL BARYON; NUMBER; BARYOGENESIS; VIOLATION;
D O I
10.1007/JHEP11(2021)055
中图分类号
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号
摘要
The goal of this work is to find the simplest UV completion of Accidental Composite Dark Matter Models (ACDM) that can dynamically generate an asymmetry for the DM candidate, the lightest dark baryon (DCb), and simultaneously annihilate the symmetric component. In this framework the DCb is a bound state of a confining SU(N)(DC) gauge group, and can interact weakly with the visible sector. The constituents of the DCb can possess non-trivial charges under the Standard Model gauge group. The generation of asymmetry for such candidate is a two-flavor variation of the out-of-equilibrium decay of a heavy scalar, with mass M-phi greater than or similar to 10(10) GeV. Below the scale of the scalars, the models recover accidental stability, or long-livedness, of the DM candidate. The symmetric component is annihilated by residual confined interactions provided that the mass of the DCb m(DCb) less than or similar to 75 TeV. We implement the mechanism of asymmetry generation, or a variation of it, in all the original ACDM models, managing to generate the correct asymmetry for DCb of masses in this range. For some of the models found, the stability of the DM candidate is not spoiled even considering generic GUT completions or asymmetry generation mechanisms in the visible sector.
引用
收藏
页数:50
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