Current StatusAA -> HH Study and

e+e- -> ZH with H -> tautau Study

Shin-ichi Kawada(AdSM, Hiroshima University)

Asian Physics & Software Meeting (2012/6/15) 1

AA -> HH Study• Now: checking the proof (Ver. 3)• I will response to this proof as soon as

possible.

Asian Physics & Software Meeting (2012/6/15) 2

e+e- -> ZH with H -> tautau• analysis just started! (from this week)• 250 GeV

e+

e-

Z

Z

tau+

tau-

H

Asian Physics & Software Meeting (2012/6/15) 3

3 types of signal

e+

e-

ZZ

tau+

tau-H

q

q-bar

l+

l-

nu

nu-bar

hadronic(~70%)

leptonic(~10%)

invisible(~20%)

I will try to analyze the leptonic mode first.Asian Physics & Software Meeting (2012/6/15) 4

Example of BG

e+

e-

ZZ

tau+

tau-Z

l+

l-

same final state of signal

need to suppress these kinds of BG

Asian Physics & Software Meeting (2012/6/15) 5

Summary• AA -> HH– I will response to the proof soon.

• e+e- -> ZH with H -> tau+tau-– analysis just started– try to analyze the leptonic mode first (ZH with Z ->

l+l- & H -> tau+tau-)

Asian Physics & Software Meeting (2012/6/15) 6