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A Summary of The 33rd General Meeting of the ILC Physics Subgroup
Aug. 24, 2013 (Sat) at Room 425, Building 3, KEK
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0) Attendants:
Present at KEK:
T.Tanabe (Tokyo)
T.Suehara (Tohoku)
T.Horiguchi (Tohoku)
C.Calancha (KEK)
S.Watanuki (Tohoku)
J.Tian (KEK)
S.Kawada (Hiroshima)
A.Ishikawa (Tohoku)
R.Yonamine (KEK)
K.Fujii (KEK)

0) Opening comments (K.Fujii)

1) Site selection process (T.Tanabe)
Announce was made on the result of the candidate site selection in Japan.
"The Kitakami site (the northern site) is evaluated to be the best domestic candidate site for the ILC."

2) vvH followed by H->ZZ* @ 500GeV (J.Tian)
Status:
Today's topic: vvllqq
--> delta sigmaxBR / sigma x BR = 15% (6.6-sigma) : very preliminary
efficiency ~ 28%
Next step:
*) More BG statistics and MVA
*) vvqqqq

3) Recoil mass (S.Watanuki)
Status:
mumuX
delta sigma / sigma = 3.6% for mh=125GeV @ 250GeV (3.53% LoI extrapolation)
eeX
delta sigma / sigma = 5.2% (5.22% LoI extrapolation)
--> consistent with the LoI analysis.
Next step:
*) Improve eeX analysis.
*) Try reconstruction w/o bremsstrahlung recovery.

3) gamma gamma (T.Calancha)
Status:
MC samples ready for 500, 1000GeV
qq gamma gamma analysis @ 1TeV --> will be finished very soon.
Next step:
*) Finish all the analysis by Sep. 30.

4) Recoil mass @ 500GeV (T.Suehara)
Status:
mumuX:
efficiency > 50%
--> delta sigma / sigma = 6.5% with 500 fb^-1 (-80,+30)
eeX:
efficiency > 16%
--> delta sigma / sigma = 7.1%
--> 4.8% (combined)
Next step:
*) Increase BG statistics

 

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The slides shown at the meeting is available from
http://ilcphys.kek.jp/meeting/physics/
see them for details.
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Discussions on future direction and milestones
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*) Meeting Schedule:
Next general meeting (2013/11/06 10:30) : Conf.ID: 254

Working group web page:
http://www-jlc.kek.jp/subg/physics/ilcphys/

Slides are available from http://ilcphys.kek.jp/meeting/physics/