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Title: Testing the 2-TeV resonance with trileptons

The CMS collaboration has reported a 2.8 excess in the search of the SU(2) R gauge bosons decaying through right-handed neutrinos into the two electron plus two jets ($eejj$) final states. This can be explained if the SU(2) Rcharged gauge bosons W$$±\atop{R}$$ have a mass of around 2TeV and a right-handed neutrino with a mass of O(1)TeV mainly decays to electron. Indeed, recent results in several other experiments, especially that from the ATLAS diboson resonance search, also indicate signatures of such a 2TeV gauge boson. However, a lack of the same-sign electron events in the CMS $eejj$ search challenges the interpretation of the right-handed neutrino as a Majorana fermion. Taking this situation into account, in this paper, we consider a possibility of explaining the CMS eejj excess based on the SU(2) L ⓍSU(2) RⓍ U(1) B-L gauge theory with pseudo-Dirac neutrinos. We fi nd that both the CMS excess events and the ATLAS diboson anomaly can actually be explained in this framework without conflicting with the current experimental bounds. This setup in general allows sizable left-right mixing in both the charged gauge boson and neutrino sectors, which enables us to probe this model through the trilepton plus missing energy search at the LHC. It turns out that the number of events in this channel predicted in our model is in good agreement with that observed by the CMS collaboration. We also discuss prospects for testing this model at the LHC Run-II experiments.
 [1] ;  [2] ;  [1]
  1. Univ. of Alabama, Tuscaloosa, AL (United States). Dept. of Physics and Astronomy
  2. Univ. of Minnesota, Minneapolis, MN (United States). William I. Fine Theoretical Physics Inst.
Publication Date:
OSTI Identifier:
Grant/Contract Number:
SC0011842; SC0013680
Accepted Manuscript
Journal Name:
Journal of High Energy Physics (Online)
Additional Journal Information:
Journal Name: Journal of High Energy Physics (Online); Journal Volume: 2016; Journal Issue: 3; Journal ID: ISSN 1029-8479
Springer Berlin
Research Org:
Univ. of Minnesota, Minneapolis, MN (United States); Univ. of Alabama, Tuscaloosa, AL (United States)
Sponsoring Org:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
Country of Publication:
United States