3 research outputs found
chi^2 Analysis of Supersymmetric Models
We discuss the results of a global fit to precision data in supersymmetric
models. We consider both gravity- and gauge-mediated models. As the
superpartner spectrum becomes light, the global fit to the data typically
results in larger values of chi^2. We indicate the regions of parameter space
which are excluded by the data. We discuss the additional effect of the B(B -->
X_s\gamma) measurement. Our analysis excludes chargino masses below MZ in the
simplest gauge-mediated model with mu>0, with stronger constraints for larger
values of tan beta.Comment: 11 pages, 13 figures. Talk given by D.M.P. at the 5th International
Conference on Supersymmetries in Physics (SUSY 97), Philadelphia,
Pennsylvania, May 27-31, 199
Analysis of Long-Lived Slepton NLSP in GMSB model at Linear Collider
We performed an analysis on the detection of a long-lived slepton at a linear
collider with GeV. In GMSB models a long-lived NLSP is predicted
for large value of the supersymmetry breaking scale . Furthermore in
a large portion of the parameter space this particle is a stau. Such heavy
charged particles will leave a track in the tracking volume and hit the muonic
detector. In order to disentangle this signal from the muon background, we
explore kinematics and particle identification tools: time of flight device,
dE/dX and Cerenkov devices. We show that a linear collider will be able to
detect long-lived staus with masses up to the kinematical limit of the machine.
We also present our estimation of the sensitivity to the stau lifetime.Comment: Minor changes, Ref. 10 fixed. 12 pages, RevTex, 4 eps figure
The Search for Supersymmetry at the Tevatron Collider
We review the status of searches for Supersymmetry at the Tevatron Collider.
After discussing the theoretical aspects relevant to the production and decay
of supersymmetric particles at the Tevatron, we present the current results for
Runs Ia and Ib as of the summer of 1997. To appear in the book "Perspectives in
Supersymmetry", edited by G.L. Kane, World Scientific.Comment: 84 pages with 31 figures imbedded using psfig.tex. Uses sprocl.st