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Cosmic perturbations, baryon asymmetry, and dark matter from the minimal supersymmetric standard model
Physical Review D ( IF 5 ) Pub Date : 2020-12-01 , DOI: 10.1103/physrevd.102.121301
Keisuke Harigaya , Masaki Yamada

Scalar fields in the minimal supersymmetric standard model may have large field values during inflation. Because of approximate global symmetry, it is plausible that the phase directions of them are nearly massless during inflation and obtain quantum fluctuations, which may be the origin of the cosmic perturbations. If perturbations are produced through Q-ball formation, baryon asymmetry and dark matter can be consistently generated. Significant baryon and dark matter isocurvature perturbations are produced, but they are predicted to nearly compensate each other. The lepton asymmetry is much larger than the baryon asymmetry. The scenario predicts local non-Gaussianity of $f_{\rm NL} = 5/3$. Implication to the mass spectrum of supersymmetric particles is discussed.

中文翻译:

来自最小超对称标准模型的宇宙扰动、重子不对称和暗物质

最小超对称标准模型中的标量场在膨胀期间可能具有较大的场值。由于近似的全局对称性,它们的相向在暴胀过程中几乎没有质量并获得量子涨落是合理的,这可能是宇宙扰动的起源。如果通过 Q 球形成产生扰动,则可以持续产生重子不对称性和暗物质。产生了显着的重子和暗物质等曲率扰动,但预计它们几乎会相互补偿。轻子不对称性比重子不对称性大得多。该场景预测 $f_{\rm NL} = 5/3$ 的局部非高斯性。讨论了对超对称粒子质谱的影响。
更新日期:2020-12-01
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