Search for a heavy composite Majorana neutrino in the final state with two leptons and two quarks at s=13TeV

Sirunyan, A. M. and Tumasyan, A. R. and Adam, Wolfgang and Ambrogi, Federico and Asilar, Ece and Md. Ali, Mohd. Adli (2018) Search for a heavy composite Majorana neutrino in the final state with two leptons and two quarks at s=13TeV. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 775. pp. 315-337. ISSN 0370-2693

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Abstract

A search for physics beyond the standard model in the final state with two same-flavour leptons (electrons or muons) and two quarks produced in proton–proton collisions at √s = 13 TeV is presented. The data were recorded by the CMS experiment at the CERN LHC and correspond to an integrated luminosity of 2.3 fb−1. The observed data are in good agreement with the standard model background prediction. The results of the measurement are interpreted in the framework of a recently proposed model in which a heavy Majorana neutrino, N, stems from a composite-fermion scenario. Exclusion limits are set for the first time on the mass of the heavy composite Majorana neutrino, mN , and the compositeness scale �. For the case mN = �, the existence of Ne (Nμ) is excluded for masses up to 4.60 (4.70) TeV at 95% confidence level.

Item Type:	Article (Journal)
Additional Information:	7861/63055
Uncontrolled Keywords:	CMS; Exotic
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:	05 Nov 2018 09:58
Last Modified:	05 Nov 2018 09:58
URI:	http://irep.iium.edu.my/id/eprint/63055

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