| Preprints | |
| Report number | arXiv:1612.05828 |
| Title | Searches for ttH (Multilepton+Diphoton) Production in ATLAS |
| Related title | Searches for ttH (Multilepton+Diphoton) Production in ATLAS |
| Author(s) | Sopczak, Andre (IEAP CTU, Prague) |
| Publication | 2016 |
| Collaboration | ATLAS |
| Imprint | 2016-12-17 |
| Number of pages | 10 |
| Note | On behalf of the ATLAS Collaboration. Contribution to HC2016, Menlo Park, CA, USA, 9-12 November 2016. 10 pages, 13 figures |
| Presented at | Annual Workshop: Higgs Couplings 2016, Menlo Park, CA, USA, 9 - 12 Nov 2016 |
| Subject category | hep-ph ; Particle Physics - Phenomenology |
| Accelerator/Facility, Experiment | CERN LHC ; ATLAS |
| Abstract | After the discovery of a Higgs boson, the measurements of its properties are at the forefront of research. The determination of the associated production of a Higgs boson and a pair of top quarks is of particular importance as the ttH Yukawa coupling is large and thus an excellent probe for physics beyond the Standard Model (SM). For the complete LHC Run-1 dataset, the combined ATLAS and CMS signal strength (defined as the ratio of measured cross-section to the SM prediction) was $\mu=2.3^{+0.7}_{-0.6}$, which indicated a mild excess with respect to the SM expectation. The results of the ttH search with multilepton and diphoton signatures are presented for the first LHC Run-2 data (13 fb$^{-1}$ at 13 TeV) recorded by the ATLAS experiment: $\mu=2.5^{+1.3}_{-1.1}$ for the multilepton analyses and $\mu=-0.3^{+1.2}_{-1.0}$ for the diphoton analyses. Both measurements are in agreement with the SM expectation. |
| Other source | Inspire |
| Copyright/License | arXiv nonexclusive-distrib. 1.0 |
ჩანაწერი შექმნილია 2017-01-31, ბოლოს შესწორებულია 2021-09-16
