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Weekly JLC Physics Group Meeting
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Place: 3F Bldg 3, KEK
Time: 10:30, 97/06/20
[0] Agenda
0.1) Light Higgs Search at TEVATRON
[1] Light Higgs Searches at TEVATRON (Kim)
Kim from Tsukuba Univ. gave an informal lecture on prospects
for light Higgs searches at TEVATRON.
Main points are as follows:
The most promising signal channel is
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W H --> l nu b b
while the main background processes include
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W b b (VECBOS)
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W Z --> W b b (PYTHIA)
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t t (HERWIG)
Major changes in the event selection are optimization of
the b-tagging:
soft lepton tag + looser 2ndary vertex tag
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and a cut on the scattering angle of the b b system,
resulting in a factor-of-two gain in the double b-tagging
efficiency and further suppression of the aforementioned
standard model backgrounds.
Tevatron's discovery reach extends to m_h = 100 (120) GeV,
given an integrated luminosity of 10 (30) fb^-1.
Other signal channels such as
Z H
gg --> H --> tau tau
have also been studied and found useful to enforce the
statistical significance of the W H mode.
Run II (2TeV run with the main injector) will start in September
1999 at 2 x 10^32 and last for about two years. An integrated
luminosity of 4 fb^-1 is thus expected by the end of 2001.
TeV 33 (2TeV run at 10^33 with a recycler ring and electron cooling)
will start in 2004. There will be no long shutdown period expected
between Run II and TeV 33 and prospects for finding a Higgs boson
lighter than 120 GeV are bright.
Details can be found in Fermi-Lab. Pub 96-086.
fujiik@jlcux1.kek.jp