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Neutrino mass hierarchy and Majorana CP phases within the Higgs triplet model at the LHC
Neutrino masses may be generated by the VEV of an $SU(2)_L$ Higgs triplet. We assume that the doubly charged component of such a triplet has a mass in the range of several 100 GeV, such that it is accessible at LHC. Its decay into like-sign leptons provides a clean experimental signature, which allo...
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Lenguaje: | eng |
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2007
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Acceso en línea: | https://dx.doi.org/10.1088/1126-6708/2008/03/009 http://cds.cern.ch/record/1074500 |
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author | Garayoa, Julia Schwetz, Thomas |
author_facet | Garayoa, Julia Schwetz, Thomas |
author_sort | Garayoa, Julia |
collection | CERN |
description | Neutrino masses may be generated by the VEV of an $SU(2)_L$ Higgs triplet. We assume that the doubly charged component of such a triplet has a mass in the range of several 100 GeV, such that it is accessible at LHC. Its decay into like-sign leptons provides a clean experimental signature, which allows for a direct test of the neutrino mass matrix. By exploring the branching ratios of this decay into leptons of various flavours, we show that within this model the type of the neutrino mass spectrum (normal, inverted or quasi-degenerate) might actually be resolved at the LHC. Furthermore, we show that within the Higgs triplet model for neutrino mass the decays of the doubly charged scalar into like-sign lepton pairs at the LHC provide a possibility to determine the Majorana CP phases of the lepton mixing matrix. |
id | cern-1074500 |
institution | Organización Europea para la Investigación Nuclear |
language | eng |
publishDate | 2007 |
record_format | invenio |
spelling | cern-10745002019-09-30T06:29:59Zdoi:10.1088/1126-6708/2008/03/009http://cds.cern.ch/record/1074500engGarayoa, JuliaSchwetz, ThomasNeutrino mass hierarchy and Majorana CP phases within the Higgs triplet model at the LHCParticle Physics - PhenomenologyNeutrino masses may be generated by the VEV of an $SU(2)_L$ Higgs triplet. We assume that the doubly charged component of such a triplet has a mass in the range of several 100 GeV, such that it is accessible at LHC. Its decay into like-sign leptons provides a clean experimental signature, which allows for a direct test of the neutrino mass matrix. By exploring the branching ratios of this decay into leptons of various flavours, we show that within this model the type of the neutrino mass spectrum (normal, inverted or quasi-degenerate) might actually be resolved at the LHC. Furthermore, we show that within the Higgs triplet model for neutrino mass the decays of the doubly charged scalar into like-sign lepton pairs at the LHC provide a possibility to determine the Majorana CP phases of the lepton mixing matrix.arXiv:0712.1453CERN-PH-TH-2007-255IFIC-07-75FTUV-07-1210oai:cds.cern.ch:10745002007-12-11 |
spellingShingle | Particle Physics - Phenomenology Garayoa, Julia Schwetz, Thomas Neutrino mass hierarchy and Majorana CP phases within the Higgs triplet model at the LHC |
title | Neutrino mass hierarchy and Majorana CP phases within the Higgs triplet model at the LHC |
title_full | Neutrino mass hierarchy and Majorana CP phases within the Higgs triplet model at the LHC |
title_fullStr | Neutrino mass hierarchy and Majorana CP phases within the Higgs triplet model at the LHC |
title_full_unstemmed | Neutrino mass hierarchy and Majorana CP phases within the Higgs triplet model at the LHC |
title_short | Neutrino mass hierarchy and Majorana CP phases within the Higgs triplet model at the LHC |
title_sort | neutrino mass hierarchy and majorana cp phases within the higgs triplet model at the lhc |
topic | Particle Physics - Phenomenology |
url | https://dx.doi.org/10.1088/1126-6708/2008/03/009 http://cds.cern.ch/record/1074500 |
work_keys_str_mv | AT garayoajulia neutrinomasshierarchyandmajoranacpphaseswithinthehiggstripletmodelatthelhc AT schwetzthomas neutrinomasshierarchyandmajoranacpphaseswithinthehiggstripletmodelatthelhc |