CERN Accelerating science

ATLAS Note
Report number	ATL-PHYS-PROC-2018-092
Title	Search for new physics in final states with leptons with ATLAS
Author(s)	Okumura, Yasuyuki (International Center for Elementary Particle Physics and Department of Physics, The University of Tokyo) (+)
Corporate Author(s)	The ATLAS collaboration
Collaboration	ATLAS Collaboration
Publication	SISSA, 2018-09-03
Imprint	03 Sep 2018
Number of pages	6
In:	PoS LHCP2018 (2018) 273
In:	Sixth Annual Conference on Large Hadron Collider Physics, Bologna, Italy, 4 - 9 Jun 2018, pp.273
DOI	10.22323/1.321.0273
Subject category	Particle Physics - Experiment
Accelerator/Facility, Experiment	CERN LHC ; ATLAS
Free keywords	EXOTICS
Abstract	One of the main goals in the physics program of the ATLAS experiment at Large Hadron Collider is to discover hints for extensions to the Standard Model. Leptons provide experimentally clear signatures in the new physics searches with the ATLAS detector. This paper presents results of three new physics searches in final states characterized by leptons: a search for pair production of heavy leptons belonging to a new $SU(2)_{\rm L}$ triplet which is predicted by the type-III seesaw mechanism; a search for a new charged heavy gauge boson resonance ($W'$) decaying into a charged lepton and a neutrino; and a search for lepton-flavor violating decays of $Z$ bosons into a $\tau$-lepton and an electron or a muon. They are based on 36.1-79.8$ {\rm fb^{-1}}$ of $pp$ collision data recorded by the ATLAS detector at $\sqrt{s}=13 {\rm TeV}$. No statistically significant excess from the Standard Model expectation has been observed and upper limits for various new physics models have been set as the interpretation of the results.
Copyright/License	publication: (License: CC-BY-NC-ND-4.0)

Corresponding record in: Inspire