2,557 research outputs found
Distinguishing between SUSY and Littlest Higgs Model using trileptons at the LHC
Littlest Higgs model with T-parity and Minimal Supersymmtric standard Model
with R-parity both give similar signatures in collider experiment with a huge
amount of missing energy depending upon mass of the lightest T-odd/R-odd
particle. In this talk, I will discuss possibility of distinguishing the two
models at the LHC in hadronically quiet signal where masses of R-odd particles
are identical to masses of T-odd particles.Comment: To appear in the proceedings of Supersymmetry and the Unification of
Fundamental Interactions (SUSY'09), Boston, US
Distinguishing split supersymmetry in Higgs signals at the Large Hadron Collider
We examine the possibility of detecting signals of split supersymmetry in the
loop-induced decay h --> gamma gamma of the Higgs boson at the Large Hadron
Collider, where charginos, as surviving light fermions of the supersymmetric
spectrum, can contribute in the loop. We perform a detailed study of
uncertainties in various parameters involved in the analysis, and thus the net
uncertainty in the standard model prediction of the rate. After a thorough scan
of the parameter space, taking all constraints into account, we conclude that
it will be very difficult to infer about split supersymmetry from Higgs signals
alone.Comment: 22 pages, 14eps figures, LateX, Changes in the figures and minor
modifications in the text. Final version to appear in Physical Review
Right-chiral sneutrinos and long-lived staus: event characteristics at the Large Hadron Collider
We investigate the signals of a supersymmetric scenario where the lighter
tau-sneutrino is the lightest supersymmetric particle, while the lighter
stau-state is the next lightest. We confirm that such a scenario can be
motivated within the framework of minimal supergravity, with just the addition
of a right-chiral neutrino superfield. Such a spectrum leads to rather unusual
signals of supersymmetry, showing stable tracks of the stau in the muon
chambers. We have studied two types of signals, namely, (a) two or more hard
jets and two stau tracks, and (b) hard jets with two muons and two stau tracks.
We demonstrate that the stau tracks can be distinguished from the muonic ones
through proper kinematic cuts which also enable one to remove all standard
model backgrounds.Comment: Latex2E, 18 pages, 8 eps figures included (To appear in Phys.Rev. D
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