Search for heavy Majorana neutrinos with the ATLAS detector in pp collisions at √s = 8 TeV

Abstract: A search for heavy Majorana neutrinos in events containing a pair of high-p T leptons of the same charge and high-p T jets is presented. The search uses 20.3 fb −1 of pp collision data collected with the ATLAS detector at the CERN Large Hadron Collider with a centre-of-mass energy of 221as...

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Autor principal: The ATLAS collaboration
Formato: JOUR
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Acceso en línea:http://hdl.handle.net/20.500.12110/paper_11266708_v2015_n7_p_TheATLAScollaboration
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spelling todo:paper_11266708_v2015_n7_p_TheATLAScollaboration2023-10-03T16:07:23Z Search for heavy Majorana neutrinos with the ATLAS detector in pp collisions at √s = 8 TeV The ATLAS collaboration Hadron-Hadron Scattering Abstract: A search for heavy Majorana neutrinos in events containing a pair of high-p T leptons of the same charge and high-p T jets is presented. The search uses 20.3 fb −1 of pp collision data collected with the ATLAS detector at the CERN Large Hadron Collider with a centre-of-mass energy of 221as = 8 TeV. The data are found to be consistent with the background-only hypothesis based on the Standard Model expectation. In the context of a Type-I seesaw mechanism, limits are set on the production cross-section times branching ratio for production of heavy Majorana neutrinos in the mass range between 100 and 500 GeV. The limits are subsequently interpreted as limits on the mixing between the heavy Majorana neutrinos and the Standard Model neutrinos. In the context of a left-right symmetric model, limits on the production cross-section times branching ratio are set with respect to the masses of heavy Majorana neutrinos and heavy gauge bosons W R and Z′.[Figure not available: see fulltext.] © 2015, SISSA, Trieste, Italy. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_11266708_v2015_n7_p_TheATLAScollaboration
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Hadron-Hadron Scattering
spellingShingle Hadron-Hadron Scattering
The ATLAS collaboration
Search for heavy Majorana neutrinos with the ATLAS detector in pp collisions at √s = 8 TeV
topic_facet Hadron-Hadron Scattering
description Abstract: A search for heavy Majorana neutrinos in events containing a pair of high-p T leptons of the same charge and high-p T jets is presented. The search uses 20.3 fb −1 of pp collision data collected with the ATLAS detector at the CERN Large Hadron Collider with a centre-of-mass energy of 221as = 8 TeV. The data are found to be consistent with the background-only hypothesis based on the Standard Model expectation. In the context of a Type-I seesaw mechanism, limits are set on the production cross-section times branching ratio for production of heavy Majorana neutrinos in the mass range between 100 and 500 GeV. The limits are subsequently interpreted as limits on the mixing between the heavy Majorana neutrinos and the Standard Model neutrinos. In the context of a left-right symmetric model, limits on the production cross-section times branching ratio are set with respect to the masses of heavy Majorana neutrinos and heavy gauge bosons W R and Z′.[Figure not available: see fulltext.] © 2015, SISSA, Trieste, Italy.
format JOUR
author The ATLAS collaboration
author_facet The ATLAS collaboration
author_sort The ATLAS collaboration
title Search for heavy Majorana neutrinos with the ATLAS detector in pp collisions at √s = 8 TeV
title_short Search for heavy Majorana neutrinos with the ATLAS detector in pp collisions at √s = 8 TeV
title_full Search for heavy Majorana neutrinos with the ATLAS detector in pp collisions at √s = 8 TeV
title_fullStr Search for heavy Majorana neutrinos with the ATLAS detector in pp collisions at √s = 8 TeV
title_full_unstemmed Search for heavy Majorana neutrinos with the ATLAS detector in pp collisions at √s = 8 TeV
title_sort search for heavy majorana neutrinos with the atlas detector in pp collisions at √s = 8 tev
url http://hdl.handle.net/20.500.12110/paper_11266708_v2015_n7_p_TheATLAScollaboration
work_keys_str_mv AT theatlascollaboration searchforheavymajorananeutrinoswiththeatlasdetectorinppcollisionsats8tev
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