Search for heavy neutral leptons in events with three charged leptons in proton-proton collisions at $\sqrt{s} =$ 13 TeV - INSPIRE

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Search for heavy neutral leptons in events with three charged leptons in proton-proton collisions at $\sqrt{s} =$ 13 TeV

CMS

Collaboration

Feb 8, 2018

20 pages

Published in:

Phys.Rev.Lett. 120 (2018) 22, 221801

Published: May 30, 2018

e-Print:

1802.02965 [hep-ex]

DOI:

10.1103/PhysRevLett.120.221801

Report number:

CMS-EXO-17-012,
CERN-EP-2018-006

Experiments:

CERN-LHC-CMS

View in:

reference search293 citations

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Abstract: (APS)

A search for a heavy neutral lepton N of Majorana nature decaying into a W boson and a charged lepton is performed using the CMS detector at the LHC. The targeted signature consists of three prompt charged leptons in any flavor combination of electrons and muons. The data were collected in proton-proton collisions at a center-of-mass energy of 13 TeV, with an integrated luminosity of 35.9 fb-1. The search is performed in the N mass range between 1 GeV and 1.2 TeV. The data are found to be consistent with the expected standard model background. Upper limits are set on the values of |VeN|2 and |VμN|2, where VℓN is the matrix element describing the mixing of N with the standard model neutrino of flavor ℓ. These are the first direct limits for N masses above 500 GeV and the first limits obtained at a hadron collider for N masses below 40 GeV.

Note:

Replaced with the published version. Added the journal reference and the DOI. All the figures and tables can be found at http://cms-results.web.cern.ch/cms-results/public-results/publications/EXO-17-012 (CMS Public Pages)

p p: scattering
p p: colliding beams
neutrino: flavor
neutrino: heavy
neutrino: decay
CERN LHC Coll
background
signature
electron muon
neutrino: Majorana: mass

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