Cosmological Constraints on Mirror Matter Parameters

Table 2

1−𝜎 constraints on the parameters obtained using different dark matter compositions and cosmological tests. For the parameter 𝑥 we reported the upper limit computed at the 95% c.l.

Parameter	Standard	Standard	Mirror	Mirror	Mirror + CDM	Mirror + CDM
	CMB	CMB + LSS	CMB	CMB + LSS	CMB	CMB + LSS
Primary
Ω𝑏ℎ^2	0.02213±0.00041	0.02205±0.00034	0.02213±0.00040	0.02215±0.00045	0.02225±0.00044	0.02201±0.00034
ΩCDMℎ^2	0.1113±0.0046	0.1161±0.0031	—	—	0.026±0.012	0.036±0.010
𝑛𝑠	0.9616±0.0097	0.9578±0.0081	0.966±0.011	0.961±0.013	0.964±0.012	0.9558±0.0061
ln10^10𝐴𝑠	3.051±0.024	3.074±0.021	3.082±0.034	3.090±0.032	3.100±0.038	3.072±0.018
100𝜃𝑠	1.0406±0.0017	1.0404±0.0015	1.0413±0.0016	1.0403±0.0016	1.0408±0.0017	1.0400±0.0014
𝜏	0.073±0.012	0.075±0.011	0.083±0.014	0.085±0.016	0.089±0.016	0.0755±0.0085
Mirror
𝑥	—	—	<0.456	<0.297	<0.479	<0.315
𝛽	—	—	5.13±0.30	5.21±0.21	4.03±0.50	3.64±0.46
Derived
Ω𝑚	0.267±0.025	0.292±0.017	0.273±0.031	0.285±0.020	0.285±0.030	0.291±0.017
ΩΛ	0.733±0.025	0.708±0.017	0.727±0.031	0.715±0.020	0.715±0.030	0.709±0.017
𝑧re	9.3±1.0	9.70±0.95	10.3±1.2	10.5±1.3	10.8±1.4	9.73±0.77
ℎ	0.710±0.022	0.690±0.013	0.708±0.024	0.695±0.017	0.698±0.023	0.690±0.014
Age (Gyr)	13.750±0.092	13.793±0.066	13.687±0.093	13.759±0.088	13.71±0.10	13.782±0.067
𝜎8	—	0.824±0.015	—	0.767±0.021	—	0.746±0.018