Extended Gauge Models and e−e−→W−W−e^-e^- \to W^-W^- at the NLC

We briefly discuss two possible manifestations of the lepton number violating reaction $e^-e^- \to W_i^-W_j^{(*)-}$, which probes the masses and mixings of heavy Majorana neutrinos, at the Next Linear Collider(NLC). Cross sections for this process are shown to be potentially quite large at center of mass energies of order 1-1.5 TeV. (Talk presented at the Santa Cruz Workshop on $e^-e^-$ Physics at the NLC, University of California, Santa Cruz, September 4-5, 1995.)Comment: 9 pages, uuencoded compressed postscript file. To obtain a copy of this paper send e-mail to [email protected]

SUSY Without Prejudice at Linear Colliders

We explore the physics of the general CP-conserving MSSM with Minimal Flavor Violation, the pMSSM. The 19 soft SUSY breaking parameters are chosen so to satisfy all existing experimental and theoretical constraints assuming that the WIMP is the lightest neutralino. We scan this parameter space twice using both flat and log priors and compare the results which yield similar conclusions. Constraints from both LEP and the Tevatron play an important role in obtaining our final model samples. Implications for future TeV-scale $e^+e^-$ linear colliders(LC) are discussed.Comment: 6 pages, 3 figs. Talk given at LCWS08, Chicago, IL, USA, 11/16-20/200

Like-Sign Charged Higgs Boson Production in e−e−e^-e^- Collisions at the NLC

We consider the production of a pair of like-sign charged Higgs bosons in $e^-e^-$ collisions at the NLC within the context of several electroweak models with extended symmetry breaking sectors. We find that the rate for this process, which proceeds through $W^-W^-$ fusion, is a very sensitive probe of the nature of these extended Higgs sectors and that the corresponding cross sections can vary by as much as several orders of magnitude at NLC energies. (Talk presented at the Santa Cruz Workshop on $e^-e^-$ Physics at the NLC, University of California, Santa Cruz, September 4-5, 1995.)Comment: 8 pages, uuencoded compressed postscript file. To obtain a copy of this paper send e-mail to [email protected]

Distinguishing Indirect Signatures Arising From New Physics at the NLC

Many sources of new physics can lead to shifts in the Standard Model predictions for cross sections and asymmetries at the NLC below their direct production thresholds. In this talk we discuss some of the tools that are useful for distinguishing amongst these new physics scenarios. R-parity violation and extensions of the Standard Model gauge structure are two typical non-minimal realizations of supersymmetry which provide us with an important test case to examine.Comment: 5 pages, 4 figs, LaTex; talk given at The World-Wide Study of Physics and Detectors for Future Linear Colliders(LCWS99), Sitges, Barcelona, Spain, 28 April-5 May 199