Non-minimally coupled vector boson dark matter

被引：11
作者：
Barman, Basabendu [1 ]
Bernal, Nicolas [1 ]
Das, Ashmita [2 ]
Roshan, Rishav [3 ,4 ]
机构：
[1] Univ Antonio Narino, Ctr Invest, Carrera 3 Este 47A-15, Bogota, Colombia
[2] Indian Inst Technol Madras, Ctr Strings Gravitat & Cosmol, Dept Phys, Chennai 600036, Tamil Nadu, India
[3] IIT Guwahati, Dept Phys, Gauhati 781039, India
[4] Phys Res Lab, Ahmadabad 380009, Gujarat, India
来源：
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS | 2022年 / 01期
基金：
欧盟地平线“2020”;
关键词：
dark matter theory; gravity; particle physics-cosmology connection; physics of the early universe; PARTICLE; CANDIDATES; PHYSICS;
D O I：
10.1088/1475-7516/2022/01/047
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We consider a simple abelian vector dark matter (DM) model, where only the DM ((X) over tildee mu) couples non-minimally to the scalar curvature ( Re) of the background spacetime via an operator of the form " (X) over tilde(X) over tilde mu (X) over tilde mu (R) over tilde. By considering the standard freeze-out scenario, we show, it is possible to probe such a non-minimally coupled DM in direct detection experiments for a coupling strength xi similar to O (1030) and DM mass m(X) <= 55 TeV, satisfying Planck observed relic abundance and perturbative unitarity. We also discuss DM production via freeze-in, governed by the non-minimal coupling, that requires xi <= 10(-5) to produce the observed DM abundance over a large range of DM mass depending on the choice of the reheating temperature. We further show, even in the absence of the non-minimal coupling, it is possible to produce the whole observed DM abundance via 2-to-2 scattering of the bath particles mediated by massless gravitons.
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页数：29
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