Sie befinden Sich nicht im Netzwerk der Universität Paderborn. Der Zugriff auf elektronische Ressourcen ist gegebenenfalls nur via VPN oder Shibboleth (DFN-AAI) möglich. mehr Informationen...
Search for type-III seesaw heavy leptons in pp collisions at [radical]s = 8 TeV with the ATLAS detector
Ist Teil von
Physical review. D, 2015-08, Vol.92 (3)
Erscheinungsjahr
2015
Link zum Volltext
Quelle
Alma/SFX Local Collection
Beschreibungen/Notizen
A search for the pair production of heavy leptons (N super(0), L super(+ or -)) predicted by the type-III seesaw theory formulated to explain the origin of small neutrino masses is presented. The decay channels N super(0) arrow right W super(+ or -)l super(- or +)([scriptl] = e, mu , [tau]) and L super(+ or -) arrow right W super(+ or -)[nu] ([nu] = [nu] sub(e), [nu] sub( mu ), [nu] sub([tau])) are considered. The analysis is performed using the final state that contains two leptons (electrons or muons), two jets from a hadronically decaying W boson and large missing transverse momentum. The data used in the measurement correspond to an integrated luminosity of 20.3 fb super(-1) of pp collisions at [radical]s = 8 TeV collected by the ATLAS detector at the LHC. No evidence of heavy lepton pair production is observed. Heavy leptons with masses below 325-540 GeV are excluded at the 95% confidence level, depending on the theoretical scenario considered.