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Advancements in Warm and Cold Photon Collider Technology for Accelerators

Explore the latest developments in warm and cold photon collider technologies for accelerators. Discover advancements in laser-based warm technology at LLNL and cavity-based cold technology at DESY/MBI. Address common R&D challenges and optimization strategies, including optics damage and beam disruption effects. Enhance CP measurement capabilities and investigate Higgs physics studies in various models. Stay informed on MSSM, NMSSM, and complex MSSM models' implications on SM Higgs interactions.

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Advancements in Warm and Cold Photon Collider Technology for Accelerators

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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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