| CMS Note | |
| Report number | CMS-CR-2016-220 |
| Title | Search for $t \bar{t}$ Resonances at CMS |
| Author(s) | McLean, Christine (UC, Davis) |
| Collaboration | CMS |
| Publication | SISSA, 2016 |
| Number of pages | 5 |
| In: | PoS LHCP2016 (2016) 222 |
| In: | 4th Conference on Large Hadron Collider Physics 2016 (LHCP 2016), Lund, Sweden, 13 - 18 Jun 2016, pp.222 |
| DOI | 10.22323/1.276.0222 |
| Subject category | Particle Physics - Experiment |
| Accelerator/Facility, Experiment | CERN LHC ; CMS |
| Abstract | We present a search for new massive particles decaying to a pair of top quarks with the CMS de- tector at the LHC. Proton-proton collision data recorded at a center-of-mass energy of 13 TeV is used. The search is performed by measuring the invariant mass distribution of the top-quark pair and testing for deviations from the expected Standard Model background. Final states with 0 or 1 leptons are considered, and the selection is optimized accordingly. In the high mass ranges acces- sible by the LHC at these energies, the top quarks are produced with high transverse momenta: the products of hadronically decaying top quarks emerge as a single jet, whereas the products of the semileptonic decay mode are characterized by the overlap of the lepton and the b jet. Specific reconstruction algorithms and selections are employed to address the identification of boosted top quark signatures. The results are presented in terms of upper limits on the model cross sec- tion. Models of Randall-Sundrum Kaluza-Klein gluon production as well as narrow, wide, and extra-wide Z ′ boson models are considered. |
| Copyright/License | publication: (License: CC-BY-NC-SA) |
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Record created 2017-08-02, last modified 2019-10-15