Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Light Stop and the $b\rightarrow s\gamma$ Process   A constraint from $b\rightarrow s\gamma$ process to the minimal
supersymmetric standard model is derived in the light stop region where the
coupling between the lighter stop and the $Z^0$ boson vanishes due to the
left-right mixing of the stop states. It is pointed out that although some
region in the parameter space is excluded from this process there remains a
large parameter space where the amplitude of the $b\rightarrow s\gamma$ is
suppressed due to partial cancellation between different diagrams. Stop as
light as 20 GeV is still viable from the $b\rightarrow s\gamma$ constraint.

25
The categories of this paper are: patt-sol
2
The categories of this paper are: math
10
The categories of this paper are: q-bio
7
The categories of this paper are: hep-th
29
The categories of this paper are: funct-an
37
The categories of this paper are: supr-con
16
The categories of this paper are: stat
18
The categories of this paper are: econ
1
The categories of this paper are: cs
30
The categories of this paper are: q-alg
31
The categories of this paper are: ao-sci
23
The categories of this paper are: solv-int
22
The categories of this paper are: chao-dyn
28
The categories of this paper are: alg-geom
20
The categories of this paper are: acc-phys
15
The categories of this paper are: nucl-ex