Abstract
Abstract
U(1)
X
SSM is a non-universal Abelian extension of the Minimal Supersymmetric Standard Model and its local gauge group is extended to SU(3)
C
× SU(2)
L
× U(1)
Y
× U(1)
X
. Based on the latest data of neutral meson mixing and experimental limitations, we investigate the process of
B
0
−
B
0
¯
mixing in U(1)
X
SSM. Using the effective Hamiltonian method, the Wilson coefficients and mass difference Δm
B
are derived. The abundant numerical results verify that
v
S
,
M
D
2
,
λ
C
,
μ
,
M
2
,
tan
β
,
g
YX
,
M
1
and λ
H
are sensitive parameters to the process of
B
0
−
B
0
¯
mixing. With further measurement in the experiment, the parameter space of the U(1)
X
SSM will be further constrained during the mixing process of
B
0
−
B
0
¯
.
Funder
National Natural Science Foundation of China