Search for heavy lepton partners of neutrinos in protonaproton collisions in the context of the type III seesaw mechanism

S Chatrchyan; V Khachatryan; A Sirunyan; A Tumasyan; W Adam; E Aguilo; T Bergauer; M Dragicevic; J Eroe; C Fabjan; M Friedl; R Fruehwirth; V Ghete; J Hammer; N Hoermann; J Hrubec; M Jeitler; W Kiesenhofer; V Knuenz; M Krammer; I Kraetschmer; D Liko; I Mikulec; M Pernicka; B Rahbaran; C Rohringer; H Rohringer; R Schoefbeck; J Strauss; A Taurok; W Waltenberger; G Walzel; E Widl; C-E Wulz; V Mossolov; N Shumeiko; J Suarez Gonzalez; M Bansal; S Bansal; T Cornelis; E A De Wolf; X Janssen; S Luyckx; L Mucibello; S Ochesanu; B Roland; R Rougny; M Selvaggi; Z Staykova; H Van Haevermaet; et. al; Abdulla Abdulsalam

doi:10.1016/j.physletb.2012.10.070

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Search for heavy lepton partners of neutrinos in protonaproton collisions in the context of the type III seesaw mechanism

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Search for heavy lepton partners of neutrinos in protonaproton collisions in the context of the type III seesaw mechanism

S Chatrchyan, V Khachatryan, A Sirunyan, A Tumasyan, W Adam, E Aguilo, T Bergauer, M Dragicevic, J Eroe, C Fabjan, …

Physics letters. B, Vol.718(2), pp.348-368

05/12/2012

DOI: https://doi.org/10.1016/j.physletb.2012.10.070

Abstract

Charging

Collisions

Cross sections

Elementary particles

Leptons

Neutrinos

Searching

A search is presented in protonaproton collisions at s = 7 TeV for fermionic triplet states expected in type III seesaw models. The search is performed using final states with three isolated charged leptons and an imbalance in transverse momentum. The data, collected with the CMS detector at the LHC, correspond to an integrated luminosity of 4.9 fb - 1 . No excess of events is observed above the background predicted by the standard model, and the results are interpreted in terms of limits on production cross sections and masses of the heavy partners of the neutrinos in type III seesaw models. Depending on the considered scenarios, lower limits are obtained on the mass of the heavy partner of the neutrino that range from 180 to 210 GeV . These are the first limits on the production of type III seesaw fermionic triplet states reported by an experiment at the LHC.

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Title: Search for heavy lepton partners of neutrinos in protonaproton collisions in the context of the type III seesaw mechanism
Creators - without role: S Chatrchyan - Alikhanyan National Laboratory
V Khachatryan - Alikhanyan National Laboratory
A Sirunyan - Alikhanyan National Laboratory
A Tumasyan - Alikhanyan National Laboratory
W Adam - Institute of High Energy Physics
E Aguilo - Institute of High Energy Physics
T Bergauer - Institute of High Energy Physics
M Dragicevic - Institute of High Energy Physics
J Eroe
C Fabjan - Institute of High Energy Physics
M Friedl - Institute of High Energy Physics
R Fruehwirth
V Ghete - Institute of High Energy Physics
J Hammer - Institute of High Energy Physics
N Hoermann
J Hrubec - Institute of High Energy Physics
M Jeitler - Institute of High Energy Physics
W Kiesenhofer - Institute of High Energy Physics
V Knuenz
M Krammer - Institute of High Energy Physics
I Kraetschmer
D Liko - Institute of High Energy Physics
I Mikulec - Institute of High Energy Physics
M Pernicka - Institute of High Energy Physics
B Rahbaran - Institute of High Energy Physics
C Rohringer - Institute of High Energy Physics
H Rohringer - Institute of High Energy Physics
R Schoefbeck
J Strauss - Institute of High Energy Physics
A Taurok
W Waltenberger - Institute of High Energy Physics
G Walzel - Institute of High Energy Physics
E Widl - Institute of High Energy Physics
C-E Wulz - Institute of High Energy Physics
V Mossolov - Institute of High Energy Physics
N Shumeiko - Institute of High Energy Physics
J Suarez Gonzalez
M Bansal - Institute of High Energy Physics
S Bansal - Institute of High Energy Physics
T Cornelis - Institute of High Energy Physics
E A De Wolf - Institute of High Energy Physics
X Janssen
S Luyckx - Institute of High Energy Physics
L Mucibello - Institute of High Energy Physics
S Ochesanu - Institute of High Energy Physics
B Roland - Institute of High Energy Physics
R Rougny - Institute of High Energy Physics
M Selvaggi - Institute of High Energy Physics
Z Staykova - Institute of High Energy Physics
H Van Haevermaet - Institute of High Energy Physics
et. al
Abdulla Abdulsalam - King Abdulaziz University
Publication Details: Physics letters. B, Vol.718(2), pp.348-368
Identifiers: 9939609708331
Academic Unit: King Abdulaziz University
Language: English
Resource Type: Journal article