Snowmass2001

E3 - EXPERIMENTAL APPROACHES:

LINEAR COLLIDERS


Sub-Group SG1: TeV-class LC


Coordinators:
Marco Battaglia (CERN), Ian Hinchliffe (LBNL),
John Jaros (SLAC), James Wells(UC Davis)

Physics Scenarios


Physics Contacts:
Higgs: R. Van Kooten (Indiana) and J. Conway (Rutgers U.),
SUSY: G. Blair (Royal Holloway Coll.),
Exotics: M. Perelstein (LBL) and S. Mrenna (UC Davis)
Strong Symmetry Breaking: T. Barklow (SLAC), T. Han (Wisconsin)



We will consider the following physics scenarios in order to assess what impact measurements from a linear collider will have on what will already have been learned from Tevatron and LHC running.

Special Options

SO1 - Precision EW Data: (Coordinator K. Moenig (DESY))

SO2 - Photon and Electron Collider:
(Coordinators: J. Gronberg (LLNL) and M. Velasco (Northwestern U.))

SO3 - Positron Polarization: (Coordinators: P. Rowson (SLAC) , E. Torrence (Oregon U.))

  • How does each of these special options contribute to the physics scenarios listed above?

  • What other new measurements are possible with each option?.

  • What are the special machine and detector requirements for each option, and what R&D is required before the option is feasible?

  • In what scenarios is the physics case for the special option so compelling that running time should be shared between a high energy e+e- IR and one devoted to the special option?
  • Discussion Questions
  • DQ1 - LC Performance Trade-offs: How may the design differences between the different LC projects impact the physics that can be done at each machine? What are the trade-offs between energy and luminosity, luminosity and backgrounds, polarisation and luminosity for each LC project ? (Discussion Leader: M. Battaglia)

  • DQ2 - LC Planning: What are the pros and cons of proceeding to the construction of a Tev Class LC before results are available from the LHC ? (Discussion Leader: J. Wells)

  • DQ3 - Luminosity Management: For each of the physics scenarios, what is the best way to distribute running time over various center of mass energies to optimize the physics output ? How much time is required ? (Discussion Leaders: H. Montgomery and J. Siegrist)

  • DQ4 - LC Expandability: What is the energy for the initial phase of the LC (350 GeV, 500 GeV)? Assuming the energy reach is expanded using the same technology as in the initial phase, what is the high energy goal for a secondary phase of the LC? What R&D issues remain before such an expansion is possible? What constraints on the initial phase would ultimate conversion to two-beam drive impose? (Discussion Leader: P. Burrows)

  • Preliminary SG1 Program


    Wed July 4 (11:30 - 13:00) 

    Start of Sub-group Activities  
    Parallel SG1
    Charge to Physics Contacts and Physics Issues


    Fri July 6 (8:00 - 12:15) 

  • General Announcements

    Plenary SG1 - TeV-class LC Sub-group: 

  • Plenary SO1 - Physics at the GigaZ (speaker: K. Moenig)
  • Plenary SO2 - Physics at gamma-gamma and electron Colliders (speaker: M. Velasco)
  • Plenary SO3 - Introduction and Production of Polarized Positrons (speaker: P. Rowson and K. Floettman)
  • Plenary DQ4 - LC Energy and Expandability (Discussion Leader: P. Burrows

    Plenary DQ2 - LC Planning (Discussion Leader: J. Wells

    Parallel SO1
    Parallel SO2
    Parallel SO3


    Tue July 10 (14:00 - 18:00) 

  • General Announcements

    Plenary SG1 - TeV-class LC Sub-group

  • Higgs Physics: LC issues

  • Plenary DQ4 - LC Energy and Expandability (discussion leader: P. Burrows )
    Plenary SO2 - Techniques for the gamma-gamma Collider

    Wed July 11 (8:15 - 12:15) 

  • General Announcements

    Plenary SG1 - TeV-class LC Sub-group

  • SUSY Models: LC issues

  • Plenary DQ3 - LC Luminosity Management (Discussion Leaders: H. Montgomery and J. Siegrist)
    Plenary SO3 - Techniques for polarized beams

    Parallel DQ3
    Parallel SO3


    Fri July 13 (8:15 - 12:15) 

  • General Announcements

    Plenary SG1 - TeV-class LC Sub-group

  • Physics Beyond SM and Strong Symmetry Breaking: LC issues

  • Plenary SO1 - Physics with Precision EW Data
    Plenary DQ3 - LC Luminosity Management (Discussion Leaders: H. Montgomery and J. Siegrist)
    Plenary DQ4 - LC Energy and Expandability (discussion leader: P. Burrows )

    Parallel SO1
    Parallel DQ3 and DQ4

    Web Resources
    Last update June 21st, 2001 by M.B.