Search for a W boson decaying to a vector-like quark and a top or bottom quark in the all-jets final state
- Title
- Search for a W boson decaying to a vector-like quark and a top or bottom quark in the all-jets final state
- Author
- 김태정
- Keywords
- Beyond Standard Model; Hadron-Hadron scattering (experiments); vectorlike quarks
- Issue Date
- 2019-03
- Publisher
- SPRINGER
- Citation
- JOURNAL OF HIGH ENERGY PHYSICS, NO 3, no. 127
- Abstract
- A search for a heavy W resonance decaying to one B or T vector-like quark and a top or bottom quark, respectively, is presented. The search uses proton-proton collision data collected in 2016 with the CMS detector at the LHC, corresponding to an integrated luminosity of 35.9 fb(-1) at 13 TeV. Both decay channels result in a final state with a top quark, a Higgs boson, and a b quark, each produced with significant energy. The all-hadronic decays of both the Higgs boson and the top quark are considered. The final-state jets, some of which correspond to merged decay products of a boosted top quark and a Higgs boson, are selected using jet substructure techniques, which help to suppress standard model backgrounds. A W boson signal would appear as a narrow peak in the invariant mass distribution of these jets. No significant deviation in data with respect to the standard model background predictions is observed. Cross section upper limits on W boson production in the top quark, Higgs boson, and b quark decay mode are set as a function of the W mass, for several vector-like quark mass hypotheses. These are the first limits for W boson production in this decay channel, and cover a range of 0.01 to 0.43 pb in the W mass range between 1.5 and 4.0 TeV.
- URI
- https://link.springer.com/article/10.1007%2FJHEP03%282019%29127https://repository.hanyang.ac.kr/handle/20.500.11754/108890
- ISSN
- 1029-8479
- DOI
- 10.1007/JHEP03(2019)127
- Appears in Collections:
- COLLEGE OF NATURAL SCIENCES[S](자연과학대학) > PHYSICS(물리학과) > Articles
- Files in This Item:
- Search for a W boson decaying to a vector-like quark and a top or bottom quark in the all-jets final state.pdfDownload
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