Searching for the Minimal Seesaw Models at the LHC and Beyond

The existence of the tiny neutrino mass and the flavor mixing can be naturally explained by type I Seesaw model which is probably the simplest extension of the Standard Model (SM) using Majorana type SM gauge singlet heavy Right Handed Neutrinos (RHNs). If the RHNs are around the Electroweak- (EW-)...

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Main Author: Arindam Das
Format: Article
Language:English
Published: Wiley 2018-01-01
Series:Advances in High Energy Physics
Online Access:http://dx.doi.org/10.1155/2018/9785318
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author Arindam Das
author_facet Arindam Das
author_sort Arindam Das
collection DOAJ
description The existence of the tiny neutrino mass and the flavor mixing can be naturally explained by type I Seesaw model which is probably the simplest extension of the Standard Model (SM) using Majorana type SM gauge singlet heavy Right Handed Neutrinos (RHNs). If the RHNs are around the Electroweak- (EW-) scale having sizable mixings with the SM light neutrinos, they can be produced at the high energy colliders such as Large Hadron Collider (LHC) and future 100 TeV proton-proton (pp) collider through the characteristic signatures with the same-sign dilepton introducing lepton number violations (LNV). On the other hand Seesaw models, namely, inverse Seesaw, with small LNV parameter can accommodate EW-scale pseudo-Dirac neutrinos with sizable mixings with SM light neutrinos while satisfying the neutrino oscillation data. Due to the smallness of the LNV parameter of such models, the “smoking-gun” signature of same-sign dilepton is suppressed where the RHNs in the model will be manifested at the LHC and future 100 TeV pp collider dominantly through the Lepton number conserving (LNC) trilepton final state with Missing Transverse Energy (MET). Studying various production channels of such RHNs, we give an updated upper bound on the mixing parameters of the light-heavy neutrinos at the 13 TeV LHC and future 100 TeV pp collider.
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spelling doaj-art-f68e1f5bdafc406b9c6b638cc97d15a62025-02-03T01:26:12ZengWileyAdvances in High Energy Physics1687-73571687-73652018-01-01201810.1155/2018/97853189785318Searching for the Minimal Seesaw Models at the LHC and BeyondArindam Das0School of Physics, KIAS, Seoul 130-722, Republic of KoreaThe existence of the tiny neutrino mass and the flavor mixing can be naturally explained by type I Seesaw model which is probably the simplest extension of the Standard Model (SM) using Majorana type SM gauge singlet heavy Right Handed Neutrinos (RHNs). If the RHNs are around the Electroweak- (EW-) scale having sizable mixings with the SM light neutrinos, they can be produced at the high energy colliders such as Large Hadron Collider (LHC) and future 100 TeV proton-proton (pp) collider through the characteristic signatures with the same-sign dilepton introducing lepton number violations (LNV). On the other hand Seesaw models, namely, inverse Seesaw, with small LNV parameter can accommodate EW-scale pseudo-Dirac neutrinos with sizable mixings with SM light neutrinos while satisfying the neutrino oscillation data. Due to the smallness of the LNV parameter of such models, the “smoking-gun” signature of same-sign dilepton is suppressed where the RHNs in the model will be manifested at the LHC and future 100 TeV pp collider dominantly through the Lepton number conserving (LNC) trilepton final state with Missing Transverse Energy (MET). Studying various production channels of such RHNs, we give an updated upper bound on the mixing parameters of the light-heavy neutrinos at the 13 TeV LHC and future 100 TeV pp collider.http://dx.doi.org/10.1155/2018/9785318
spellingShingle Arindam Das
Searching for the Minimal Seesaw Models at the LHC and Beyond
Advances in High Energy Physics
title Searching for the Minimal Seesaw Models at the LHC and Beyond
title_full Searching for the Minimal Seesaw Models at the LHC and Beyond
title_fullStr Searching for the Minimal Seesaw Models at the LHC and Beyond
title_full_unstemmed Searching for the Minimal Seesaw Models at the LHC and Beyond
title_short Searching for the Minimal Seesaw Models at the LHC and Beyond
title_sort searching for the minimal seesaw models at the lhc and beyond
url http://dx.doi.org/10.1155/2018/9785318
work_keys_str_mv AT arindamdas searchingfortheminimalseesawmodelsatthelhcandbeyond