Compact Muon Solenoid
LHC, CERN
Visit us: CMS Public Website, CMS Physics ;
Contact us: CMS Publications Committee
| CMS-PAS-B2G-22-004 | ||
| Search for single production of vector-like quarks decaying into a W boson and a b quark using the single-lepton final statesin proton-proton collisions at $ \sqrt{s} = $ 13 TeV | ||
| CMS Collaboration | ||
| 2025-05-17 | ||
| Abstract: A search is performed for single production of a heavy vector-like quark, decaying into a W boson and a bottom (b) quark. The analysis is based on proton-proton collision data collected by the CMS experiment at the LHC at a center-of-mass energy of 13 TeV and corresponding to an integrated luminosty of 138 fb$ ^{-1} $. The search targets events with leptonic W boson decays. The event signature consists of one electron or muon, large missing transverse momentum, at least one jet consistent with coming from the fragmentation of a b quark and having large transverse momentum, and at least one jet in the forward region of the detector. No significant excess over the standard model predictions is observed. Upper limits are set on the production cross section for a heavy exotic quark and its coupling $ \kappa_W $ to the standard model sector. For a quark decaying exclusively into Wb, the 95% confidence level upper limit on $ \kappa_W $ depends on the quark mass and and reaches values as low as 0.086 at VLQ masses around 1400 MeV. For the $ \kappa_W $ value of 0.2, the 95% confidence level lower limit on the quark mass is 2.4 TeV. These are the most stringent limits to date on the single production of vector-like quarks decaying into Wb. | ||
| Links: CDS record (PDF) ; CADI line (restricted) ; | ||
|
|
Compact Muon Solenoid LHC, CERN |
|
|
|
|
|
|