Search for heavy neutral leptons in events with three charged leptons in proton-proton collisions at s =13 TeV

Sirunyan, A. M. and Tumasyan, A. R. and Adam, Wolfgang and Ambrogi, Federico and Asilar, Ece and Md. Ali, Mohd. Adli (2018) Search for heavy neutral leptons in events with three charged leptons in proton-proton collisions at s =13 TeV. Physical Review Letters, 120 (22). 22180-1-221801-20. ISSN 0031-9007 E-ISSN 1079-7114

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Abstract

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 jVeNj 2 and jVμNj 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 GeVand the first limits obtained at a hadron collider for N masses below 40 GeV.

Item Type:	Article (Journal)
Additional Information:	7861/65293
Uncontrolled Keywords:	Heavy neutral leptons; three charged leptons; Proton-proton Collisions; 13 TeV
Subjects:	Q Science > Q Science (General) Q Science > QC Physics
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Science Kulliyyah of Science > Department of Physics
Depositing User:	Dr Mohd Adli MD Ali
Date Deposited:	31 Jul 2018 15:20
Last Modified:	24 Jan 2019 15:54
URI:	http://irep.iium.edu.my/id/eprint/65293

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