Search for the associated production of Higgs bosons and top quarks at sqrt(s)=7-8 TeV with the ATLAS detector at LHC

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• Giuseppe Salamanna (Roma Tre)
• Tuesday 26 May 2015, 15:00-16:00
• Rutherford Seminar Room B.

If you have a question about this talk, please contact Nick Barlow.

After the discovery of the Higgs boson in 2012, data collected 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 production modes. The coupling with top quarks is of particular relevance to probe the Standard Model (SM) predictions against new physics contributions both at production (direct measurement) and at decay, for example into two photons. After describing the experimental strategy, optimization of selections and main backgrounds to the process under study, results will be shown for the search of a Higgs boson with a ttbar pair in various final states (bbbar, with many leptons, di-photon). While no signal observation can be claimed with the data set at hand, a sensitivity to cross-section values close to the SM expectation is attained: which makes this a ‘hot topic’ for the first phase of the LHC second data taking, starting now.

This talk is part of the Cavendish HEP Seminars series.

This talk is included in these lists:

• All Cavendish Laboratory Seminars
• All Talks (aka the CURE list)
• Cavendish HEP Seminars
• Centre for Health Leadership and Enterprise
• Featured lists
• ME Seminar
• Neurons, Fake News, DNA and your iPhone: The Mathematics of Information
• Rutherford Seminar Room B
• School of Physical Sciences
• Thin Film Magnetic Talks
• few29

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