Rauco, G. (2018) Search for single production of vector-like quarks decaying to a b quark and a Higgs boson. Il nuovo cimento C, 41 (4). pp. 1-8. ISSN 1826-9885
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Abstract
A search is presented for the singly produced heavy vector-like quark B, in its decay to a Higgs boson and a b quark. The Higgs boson decays to a highly boosted b¯b quark pair and is reconstructed as a single collimated jet. The analysis exploits data collected by the CMS experiment in proton-proton collisions at √s = 13 TeV at the CERN LHC. The corresponding integrated luminosity is 35.9fb−1. The data are in agreement with the background expectations, and upper limits at 95% confidence level on the B quark cross section times the branching ratio are set. For a narrow B quark with a mass between 700 and 1800GeV, values in the range 1.28–0.07pb are obtained. Similar sensitivities are achieved also in the case of more realistic scenarios where the production of B quarks with widths of 10, 20 and 30% of the resonance mass are considered. With this search, the current knowledge on vector-like quarks was extended, being this analysis the first at the CERN LHC for the single production of a B quark through its fully hadronic decay channel, and also the first study investigating finite resonance widths of the B quark.
| Item Type: | Article |
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| Subjects: | 500 Scienze naturali e Matematica > 530 Fisica |
| Depositing User: | Marina Spanti |
| Date Deposited: | 24 Nov 2020 14:28 |
| Last Modified: | 24 Nov 2020 14:28 |
| URI: | http://eprints.bice.rm.cnr.it/id/eprint/20286 |
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