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- W4380742064 abstract "Results are presented of a search for a heavy Majorana neutrino decaying into two same-flavor leptons ℓ (electrons or muons) and a quark-pair jet. A model is considered in which the is an excited neutrino in a compositeness scenario. The analysis is performed using a sample of proton-proton collisions at s=13TeV recorded by the CMS experiment at the CERN LHC, corresponding to an integrated luminosity of 138fb−1. The data are found to be in agreement with the standard model prediction. For the process in which the is produced in association with a lepton, followed by the decay of the to a same-flavor lepton and a quark pair, an upper limit at 95% confidence level on the product of the cross section and branching fraction is obtained as a function of the mass and the compositeness scale Λ. For this model the data exclude the existence of () for below 6.0 (6.1) TeV, at the limit where is equal to Λ. For , values of Λ less than 20 (23) TeV are excluded. These results represent a considerable improvement in sensitivity, covering a larger parameter space than previous searches in collisions at 13 TeV." @default.
- W4380742064 created "2023-06-16" @default.
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