2,946 research outputs found
Precision Supersymmetry Measurements at the e^-e^- Collider
Get PDFMeasurements of supersymmetric particle couplings provide important
verification of supersymmetry. If some of the superpartners are at the
multi-TeV scale, they will escape direct detection at planned future colliders.
However, such particles induce nondecoupling corrections in processes involving
the accessible superparticles through violations of the supersymmetric
equivalence between gauge boson and gaugino couplings. These violations are
analogous to the oblique corrections in the electroweak sector of the standard
model, and can be parametrized in terms of super-oblique parameters. The collision mode of a future linear collider is shown to be an excellent
environment for such high precision measurements of these SUSY parameters,
which will provide an important probe of superparticles beyond reachable
energies.Comment: 12 pages, 4 figures, LaTeX, Talk presented at the 2nd International
Workshop on Electron-Electron Interactions at TeV Energies, September 22-24,
1997, University of California, Santa Cru
Supersymmetric Lepton Flavor Violation at the NLC
Get PDFSupersymmetric theories generally have new flavor violation sources in the
squark and slepton mass matrices. If significant lepton flavor violation
exists, selectron and smuon should be nearly degenerate. This leads to the
phenomenon of slepton oscillations, which is analogous to neutrino
oscillations, if sleptons are produced at the Next Linear Collider. The direct
slepton production at the Next Linear Collider provides a much more powerful
probe of lepton flavor violation than the current bounds from rare processes,
such as .Comment: 5 pages, LaTeX, 1 figure, Talk presented at the 1st Symposium on
Flavor-Changing Neutral Currents, Feb.19-21, 1997, Santa Monica, Californi
Minimal electroweak symmetry breaking model in extra dimensions
Get PDFWe show that if the Standard Model gauge fields and fermions propagate in
extra dimenions, a composite Higgs field with the correct quantum number can
arise naturally as a bound state due to the strong gauge interactions in higher
dimensions. The top quark mass and the Higgs mass can be predicted from the
infrared fixed points of the renormalization group equations. The top quark
mass is in good agreement with the experimental value, and the Higgs boson mass
is predicted to be ~200 GeV. There may be some other light bound states which
could be observed at upcoming collider experiments.Comment: 3 pages, talk given at DPF2000, Columbus, Ohio, Aug. 9-1
Duality after Supersymmetry Breaking
Get PDFStarting with two supersymmetric dual theories, we imagine adding a chiral
perturbation that breaks supersymmetry dynamically. At low energy we then get
two theories with soft supersymmetry-breaking terms that are generated
dynamically. With a canonical Kahler potential, some of the scalars of the
"magnetic" theory typically have negative mass-squared, and the vector-like
symmetry is broken. Since for large supersymmetry breaking the "electric"
theory becomes ordinary QCD, the two theories are then incompatible. For small
supersymmetry breaking, if duality still holds, the magnetic theory analysis
implies specific patterns of chiral symmetry breaking in supersymmetric QCD
with small soft masses.Comment: 6 pages, LaTex, uses moriond.sty (included). Talk presented by Y.S.
at the XXXIIIrd Rencontres de Moriond, Electroweak Interactions and Unified
Theories, Les Arcs, Savoie, France, March 14-21, 199
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