11,562 research outputs found
Low scale gravity mediation with warped extra dimension and collider phenomenology on the hidden sector
We propose a scenario of gravity mediated supersymmetry breaking (gravity
mediation) in a supersymmetric Randall-Sundrum model. In our setup, both of the
visible sector and the hidden sector co-exist on the infrared (IR) brane. We
introduce the Polonyi model as a simple hidden sector. Due to the warped
metric, the effective cutoff scale on the IR brane is ``warped down'', so that
the gravity mediation occurs at a low scale. As a result, the gravitino is
naturally the lightest superpartner (LSP) and contact interactions between the
hidden and the visible sector fields become stronger. We address
phenomenologies for various IR cutoff scales. In particular, we investigate
collider phenomenology involving a scalar field (Polonyi field) in the hidden
sector for the case with the IR cutoff around 10 TeV. We find a possibility
that the hidden sector scalar can be produced at the LHC and the International
Linear Collider (ILC). Interestingly, the scalar behaves like the Higgs boson
of the standard model in the production process, while its decay process is
quite different and, once produced, it will provide us with a very clean
signature. The hidden sector may be no longer hidden.Comment: 18 pages, 4 figures. typographical errors have been corrected and a
few new comments have been adde
Hidden particle production at the ILC
In a class of new physics models, new physics sector is completely or partly
hidden, namely, singlet under the Standard Model (SM) gauge group. Hidden
fields included in such new physics models communicate with the Standard Model
sector through higher dimensional operators. If a cutoff lies in the TeV range,
such hidden fields can be produced at future colliders. We consider a scalar
filed as an example of the hidden fields. Collider phenomenology on this hidden
scalar is similar to that of the SM Higgs boson, but there are several features
quite different from those of the Higgs boson. We investigate productions of
the hidden scalar at the International Linear Collider (ILC) and study the
feasibility of its measurements, in particular, how well the ILC distinguishes
the scalar from the Higgs boson, through realistic Monte Carlo simulations.Comment: the version to be published in PR
Pole dynamics for the Flierl-Petviashvili equation and zonal flow
We use a systematic method which allows us to identify a class of exact
solutions of the Flierl-Petvishvili equation. The solutions are periodic and
have one dimensional geometry. We examine the physical properties and find that
these structures can have a significant effect on the zonal flow generation.Comment: Latex 40 pages, seven figures eps included. Effect of variation of
g_3 is studied. New references adde
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