204 research outputs found
Like-sign dilepton signature for gluino production at LHC including top quark and higgs boson effects
A systematic analysis of the like-sign dipleton signature for gluino
production at LHC is performed in the -conserving minimal supersymmetric
standard model, taking into account the top quark and Higgs boson effects in
the cascade decay. We consider two representative values of the gluino mass,
300 and 800 GeV, along with those of the other SUSY parameters. While the top
quark contribution is kinematically suppressed for the former case it is very
import for the latter. Ways of separating the signal from the background are
discussed. One expects a viable LSD signals upto a gluino mass of
(1200) GeV at the low (high) luminosity option of LHC over practically the full
parameter space of MSSM.Comment: 16 pages, Latex, 4 figures (available on request
Ground state and vortex states of bosons in an anisotropic trap: A variational approach
We propose a simple variational form of the wave function to describe the
ground state and vortex states of a system of weakly interacting Bose gas in an
anisotropic trap. The proposed wave function is valid for a wide range of the
particle numbers in the trap. It also works well in the case of attractive
interaction between the atoms. Further, it provides an easy and fast method to
calculate the physical quantities of interest. The results compare very well
with those obtained by purely numerical techniques. Using our wave function we
have been able to verify, for the first time, the predicted behaviour of aspect
ratio.Comment: Revised version, To appear in the special issue of European Physical
Journal
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