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gg and e - e - options working group report

gg and e - e - options working group report. Jeff Gronberg/LLNL For the gg and e - e - working groups ALCPG Workshop Cornell July 12-16 , 2003.

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gg and e - e - options working group report

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  1. gg and e-e- options working group report Jeff Gronberg/LLNL For the gg and e-e- working groups ALCPG Workshop Cornell July 12-16 , 2003 This work was performed under the auspices of the U.S. Department of Energy by the University of California, Lawrence Livermore National Laboratory under Contract No. W-7405-Eng-48.

  2. Warm and Cold gg technology • Photon collider technologies for both warm and cold accelerators are under development • Warm technology based on MERCURY laser is being developed at LLNL • Cold technology using recirculating cavity being designed at DESY / MBI • Both are funding limited • Looking for R&D issues common to both for work before the technology decision • Optics damage from high power lasers and radiation • Effect of beam disruption from Compton on the beam-beam feedback

  3. IWSLC Jeju panel determined that gg is an important capability to retain for the LC Higgs SM light Higgs  bb, W+W- and gg done SUSY Heavy H0, A0 bb done CP determination of Higgs with linear polarization Exploring technical options to improve CP measurement with linear polarized beam Extending analyses to Higgs  ZZ, Zg Pandora-pythia with H  ZZ and Zg cross sections Including gg gg, ZZ, Zg backgrounds in pandora Two-photon background rate determined to be 1.8 / crossing in NLC500G We will examine the effect on jet recon as a function of integrated crossings Feedback / study from detector groups about how few crossing we can integrate Current status of gg H

  4. Physics studies of new models • Impact of MSSM on the SM light Higgs Analysis • The ratio of MSSM / SM of s(ggh) x BR(h bb) still yields a good measurement over most of MA, tan(b) space. • NMSSM with extra CP+ and CP- Higgs • Light h  aa  bbbb checked, where LHC sees a hint, gg can make a mass measurement. • Complex MSSM model • h  aa  bbbb will be applied to this model as well • Littlest Higgs hep/ph-0302188 • Partial widths of loop decays G(hgg) versus G(hgg) probe the model parameters. Greatest sensitivity with gg data. • Radion-Higgs Mixing hep/ph-0304245 • Will be observable at gg • Combining information with LHC probes anomalous couplings in this model.

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