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SUMMARY:Search for the associated production of Higgs bosons and top quark
 s at sqrt(s)=7-8 TeV with the ATLAS detector at LHC - Giuseppe Salamanna (
 Roma Tre)
DTSTART:20150526T140000Z
DTEND:20150526T150000Z
UID:TALK58404@talks.cam.ac.uk
CONTACT:Nick Barlow
DESCRIPTION:After the discovery of the Higgs boson in 2012\, data collecte
 d by ATLAS at LHC at a centre-of-mass energy of 7 and 8 TeV have been used
  to search for its coupling to fermions and bosons in the various producti
 on modes. The coupling with top quarks is of particular relevance to probe
  the Standard Model (SM) predictions against new physics contributions bot
 h at production (direct measurement) and at decay\, for example into two p
 hotons. After describing the experimental strategy\, optimization of selec
 tions and main backgrounds to the process under study\, results will be sh
 own for the search of a Higgs boson with a ttbar pair in various final sta
 tes (bbbar\, with many leptons\, di-photon). While no signal observation c
 an be claimed with the data set at hand\, a sensitivity to cross-section v
 alues close to the SM expectation is attained: which makes this a 'hot top
 ic' for the first phase of the LHC second data taking\, starting now.
LOCATION:Rutherford Seminar Room B
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