Search for heavy Majorana or Dirac neutrinos and right-handed W gauge bosons in final states with two charged leptons and two jets at √s=13 TeV with the ATLAS detector

Collaboration, ATLAS and Barton, A.E. and Bertram, I.A. and Borissov, G. and Bouhova -Thacker, E.V. and Burke, S. and Cao, Y. and Catmore, J.R. and Dewhurst, A. and Fox, H. and Grimm, K. and Henderson, R.C.W. and Hou, S. and Hunter, R.F.H. and Janssen, J. and Jones, R.W.L. and Kartvelishvili, V. and Kim, Y.K. and Long, R.E. and Love, P.A. and Ma, Y. and Meng, X.T. and Muenstermann, D. and Price, D. and Sen, S. and Smizanska, M. and Solovyev, V. and Sopczak, A. and Tee, A.S. and Walder, J. and Wharton, A.M. and Whitmore, B.W. and Yamazaki, Y. and Ye, S. (2019) Search for heavy Majorana or Dirac neutrinos and right-handed W gauge bosons in final states with two charged leptons and two jets at √s=13 TeV with the ATLAS detector. Journal of High Energy Physics, 2019 (1): 16. ISSN 1029-8479

Abstract

A search for heavy right-handed Majorana or Dirac neutrinos NR and heavy right-handed gauge bosons WR is performed in events with a pair of energetic electrons or muons, with the same or opposite electric charge, and two energetic jets. The events are selected from pp collision data with an integrated luminosity of 36.1 fb−1 collected by the ATLAS detector at s=13 TeV. No significant deviations from the Standard Model are observed. The results are interpreted within the theoretical framework of a left -right symmetric model and lower limits are set on masses in the heavy right -handed W boson and neutrino mass plane. The excluded region extends to mRR=4.7 TeV for both Majorana and Dirac NR neutrinos. © 2019, The Author(s).