Please use this identifier to cite or link to this item:
https://hdl.handle.net/20.500.11851/9341
Title: | Search for Pair Production of Heavy Vector-Like Quarks Decaying Into High-(pt) W Bosons and Top Quarks in the Lepton-Plus Final State in Pp Collisions at Root S=13 Tev With the Atlas Detector | Authors: | Aaboud, M. Aad, G. Abbott, B. Abdinov, O. Abeloos, B. Abhayasinghe, D. K. Adersberger, M. |
Keywords: | Exotics Hadron-Hadron scattering (experiments) vector-like quarks |
Publisher: | Springer | Abstract: | A search is presented for the pair production of heavy vector-like B quarks, primarily targeting B quark decays into a W boson and a top quark. The search is based on 36.1 fb(-1) of pp collisions at root s = 13 TeV recorded in 2015 and 2016 with the ATLAS detector at the CERN Large Hadron Collider. Data are analysed in the lepton-plus-jets final state, characterised by a high-transverse-momentum isolated electron or muon, large missing transverse momentum, and multiple jets, of which at least one is b-tagged. No significant deviation from the Standard Model expectation is observed. The 95% confidence level lower limit on the B mass is 1350 GeV assuming a 100% branching ratio to Wt. In the SU(2) singlet scenario, the lower mass limit is 1170 GeV. The 100% branching ratio limits are found to be also applicable to heavy vector-like X production, with charge +5/3, that decay into Wt. This search is also sensitive to a heavy vector-like B quark decaying into other final states (Zb and Hb) and thus mass limits on B production are set as a function of the decay branching ratios. | URI: | https://doi.org/10.1007/JHEP08(2018)048 https://hdl.handle.net/20.500.11851/9341 |
ISSN: | 1029-8479 |
Appears in Collections: | Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection |
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