A search is performed for heavy Majorana neutrinos (N) using an event signature defined by two same-sign charged leptons of the same flavour and two jets. The data correspond to an integrated luminosity of of pp collisions at a centre-of-mass energy of 7 TeV collected with the CMS detector at the Large Hadron Collider. No excess of events is observed beyond the expected standard model background and therefore upper limits are set on the square of the mixing parameter, , for , as a function of heavy Majorana-neutrino mass. These are the first direct upper limits on the heavy Majorana-neutrino mixing for .

V. KHACHATRYAN, A.M. SIRUNYAN, A. TUMASYAN, W. ADAM, T. BERGAUER, M. DRAGICEVIC, et al. (2012). Search for heavy Majorana neutrinos in mu+-mu+-+jets and e+-e+-+jets events in pp collisions at sqrt(s)=7 TeV. PHYSICS LETTERS. SECTION B, 717, 109-128 [10.1016/j.physletb.2012.09.012].

Search for heavy Majorana neutrinos in mu+-mu+-+jets and e+-e+-+jets events in pp collisions at sqrt(s)=7 TeV

BONACORSI, DANIELE;BRAIBANT, SYLVIE;CAPILUPPI, PAOLO;CASTRO, ANDREA;CUFFIANI, MARCO;FANFANI, ALESSANDRA;FASANELLA, DANIELE;MENEGHELLI, MARCO;NAVARRIA, FRANCESCO LUIGI;ROVELLI, TIZIANO;SIROLI, GIAN PIERO;GUIDUCCI, LUIGI;
2012

Abstract

A search is performed for heavy Majorana neutrinos (N) using an event signature defined by two same-sign charged leptons of the same flavour and two jets. The data correspond to an integrated luminosity of of pp collisions at a centre-of-mass energy of 7 TeV collected with the CMS detector at the Large Hadron Collider. No excess of events is observed beyond the expected standard model background and therefore upper limits are set on the square of the mixing parameter, , for , as a function of heavy Majorana-neutrino mass. These are the first direct upper limits on the heavy Majorana-neutrino mixing for .
2012
V. KHACHATRYAN, A.M. SIRUNYAN, A. TUMASYAN, W. ADAM, T. BERGAUER, M. DRAGICEVIC, et al. (2012). Search for heavy Majorana neutrinos in mu+-mu+-+jets and e+-e+-+jets events in pp collisions at sqrt(s)=7 TeV. PHYSICS LETTERS. SECTION B, 717, 109-128 [10.1016/j.physletb.2012.09.012].
V. KHACHATRYAN; A.M. SIRUNYAN; A. TUMASYAN; W. ADAM; T. BERGAUER; M. DRAGICEVIC; J. ER¨O; C. FABJAN; M. FRIEDL; R. FRUHWIRTH; V.M. GHETE; J. HAMMER; S...espandi
File in questo prodotto:
Eventuali allegati, non sono esposti

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/128044
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 60
  • ???jsp.display-item.citation.isi??? 65
social impact