Abstract
A search for a right-handed gauge boson WR, decaying into a boosted right-handed heavy neutrino NR, in the framework of Left-Right Symmetric Models is presented. It is based on data from proton–proton collisions with a centre-of-mass energy of 13 TeV collected by the ATLAS detector at the Large Hadron Collider during the years 2015, 2016 and 2017, corresponding to an integrated luminosity of 80 fb−1. The search is performed separately for electrons and muons in the final state. A distinguishing feature of the search is the use of large-radius jets containing electrons. Selections based on the signal topology result in smaller background compared to the expected signal. No significant deviation from the Standard Model prediction is observed and lower limits are set in the WR and NR mass plane. Mass values of the WR smaller than 3.8–5 TeV are excluded for NR in the mass range 0.1–1.8 TeV.
Highlights
IntroductionThe results obtained in this search are applicable to other variations of the Left-Right Symmetric Model (LRSM) that contain a right-handed gauge boson and neutral leptons, such as inverse seesaw models [21]
Over the past decades, there have been several important developments at the theoretical and experimental frontiers to address the question of neutrino mass generation, which is not explained in the Standard Model (SM) of particle interactions
A search for a heavy right-handed W R boson decaying into a b√oosted right-handed neutrino NR is presented using 80 fb−1 of s = 13 TeV proton–proton collision data recorded by the ATLAS detector at the Large Hadron Collider (LHC)
Summary
The results obtained in this search are applicable to other variations of the LRSM that contain a right-handed gauge boson and neutral leptons, such as inverse seesaw models [21] This search is applicable to R-parity-violating supersymmetry [22,23], where a selectron is resonantly produced and subsequently decays into an electron and a neutralino, and the latter decays to a lepton and quarks through a non-zero λ coupling. When the neutralino is boosted, its decay products can be reconstructed as a single large-R jet [24], analogous to the final state probed in this analysis
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