Probing the Higgs coupling to top quark in events with associated Higgs production with top-anti top pair and Higgs decay in two photons
We present here the results of the first search for the associated production of the Higgs boson with a tt¯$tar t$ pair, using the events where the Higgs boson decays to two photons in CMS. In order to maximize acceptance and sensitivity to such a small signal, we device two di_erent sets of event s...
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| Format: | Article |
| Language: | English |
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EDP Sciences
2013-11-01
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| Series: | EPJ Web of Conferences |
| Online Access: | http://dx.doi.org/10.1051/epjconf/20136020022 |
| Summary: | We present here the results of the first search for the associated production of the Higgs boson with a tt¯$tar t$ pair, using the events where the Higgs boson decays to two photons in CMS. In order to maximize acceptance and sensitivity to such a small signal, we device two di_erent sets of event selection criteria, optimized for leptonic and all-hadronic tt¯$tar t$ decays. In the absence of a significant excess over the background-only predictions, we proceed to set an observed (expected) 95% confidence level upper limit on tt¯$tar t$H production cross section times BR(H → γγ) of 5.4 (5.3) times the Standard model value using 19.6 fb−1 of 8 TeV pp collisions. |
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| ISSN: | 2100-014X |