1 Introduction - Caltech High Energy Physics - California Institute of ...

5.3 Supersymmetry 393
S(φKs)
1
0.5
0
-0.5
S(φKs) -0.5 in different SUSY -0.5 breaking scenarios -0.5
mSUGRA
1
0.5
S(φKs) = 0.300(input) ± 0.074 (5ab -1 )
0
SU(5)⊕ν R
degenerate
1
0.5
0
SU(5)⊕ν R
non-degenerate
-1
-1
-1
-1
0 2500 0 2500 0 2500 0 2500
gluino mass (GeV/c 2 )
(tanβ=30)
0.04
0.02
S(b → s γ)
0
-0.02
1
0.5
0
U(2)FS
A(b → s γ) = 0.015(input) ± 0.011 (5ab -1 )
mSUGRA
0.04
0.02
0
S(K * γ, K * →Ksπ 0 )
S(b → s γ) in different
SUSY breaking -0.02 scenarios-0.02
SU(5)⊕ν R
degenerate
0.04
0.02
1
0.5
0
-0.5
S(K * γ, K * →Ksπ 0 ) = 0.80(input) ± 0.16 (5ab -1 )
S(K
-0.5
-0.5
* γ, K * →Ksπ 0 ) in different
SUSY breaking scenarios
mSUGRA
1
0.5
0
SU(5)⊕ν R
degenerate
-0.04
0
-0.04
2500 0
-0.04
2500 0
-0.04
2500 0 2500
gluino mass (GeV/c 2 )
(tanβ=30)
0
0.5
-1
0 2500
-1
0 2500
-1
0 2500
-1
0 2500
gluino mass (GeV/c 2 )
(tanβ=30)
0.04
0.02
0
-0.02
SU(5)⊕ν R
non-degenerate
U(2)FS
1
0
1
0.5
0
-0.5
SU(5)⊕ν R
non-degenerate
Figure 5-31. Mixing-induced CP asymmetry in φK 0 S and Msγ modes and direct CP asymmetry in b → sγ
as a function of the gluino mass.
Possible deviations from the Standard Model prediction in the consistency test of the unitarity triangle and
rare decays are summarized in Table 5-12. The patterns of the deviations are different for these cases. For
instance, observables related to the Bd unitarity triangle, namely ∆m(Bd), |Vub|, φ1 from the B → J/ψ S
mode, and φ3 from the B → DK mode are consistent with a single triangle for the first tree cases in the
table, but deviation can be observed if we compare ɛK and ∆m(Bs)/∆m(Bd) with the Standard Model
prediction for the second and third cases. The deviation patterns are also different for various rare decay
observables. These features are useful to distinguish different SUSY models at a Super B Factory.
B physics signals in the Snowmass Points & Slopes
It is expected that LHC experiments can significantly improve the search limit of SUSY particles. In a typical
scenario like the minimal supergravity model, squarks and gluino will be found if their masses are below 2
TeV. Snowmass Points and Slopes (SPS) are proposed sets of benchmark parameters of SUSY parameter
space [168]. Such model points and lines are selected as representative cases for phenomenological studies of
SUSY theory, especially for SUSY particle searches in future collider experiments.
From the viewpoint of a Super B Factory, it is interesting to study possible flavor physics signals in these
benchmark scenarios, and compare them with collider signals. In order to illustrate how LHC and a Super B
Factory can be complementary to each other, we calculated FCNC processes and rare decays along several
benchmark parameter lines for the two cases of SU(5) GUT with right-handed neutrinos. We should note
U(2)FS
The Discovery Potential of a Super B Factory