Weekly JLC Physics Group Meeting

Place: 3F Bldg 3, KEK
Time:  10:30, 98/06/05

[0] Agenda
   0.1) General Notifications
   0.2) Gamma-Gamma Collider WG Status
[1] General Notifications

[1-1] ACFA News Update (H.Sendai)

   The ACFA Server arrived and is being set up by Sendai.

[1-2] Network Security (A.Miyamoto)

   Unauthorized accesses to computers in the KEK site were detected.
   In spite of systematic defense actions being taken on the basis
   of the KEK domain, frequent password updates are recommended to
   individual users.
[1-3} JLC Pamphlet (T.Tauchi)

   A new JLC pamphlet is almost ready: the text part has been

[2] Gamma-Gamma Collider WG Status (T.Tauchi)

   A regular gamma-gamma WG meeting was held on May 25 at KEK.
   T.Tauchi reported the highlights from the meeting:
   Masukado at Hiroshima Univ. reported the status of nonlinear
   Compton experiments. 
   Tauchi presented feasibility studies on Higgs factory 
   experiments. Some of the topics include:
   (a) photon linear polarizations
       Orthogonal combination: CP=-1
       Parallel combination:   CP=+1
       ---> controlling the CP of the s-channel Higgs!
   (b) triple Higgs coupling
   (c) FCNC
   I.Watanabe discussed top and SUSY physics
   He demonstrated the usefulness of helicity controlling of
   the initial gamma-gamma state for selecting the final-state
   t-tbar helicity combinations.
   There had been a secret topic discussed at the meeting but
   by definition was not presented here.