INVESTIGADORES
MONTICELLI Fernando Gabriel
artículos
Título:
Search for heavy neutrinos and right-handed W bosons in events with two leptons and jets in pp collisions at √s = 7 TeV with the ATLAS detector
Autor/es:
ATLAS COLLABORATION, G. AAD, F. MONTICELLI, ET AL
Revista:
EUROPEAN PHYSICAL JOURNAL C - PARTICLES AND FIELDS
Editorial:
SPRINGER
Referencias:
Lugar: Berlin; Año: 2012 vol. 213 p. 1 - 23
ISSN:
1434-6044
Resumen:
This letter reports on a search for hypothetical heavy
neutrinos, N, and right-handed gauge bosons, WR, in events with two
high transverse momentum leptons and at least one high transverse
momentum hadronic jet. The results were obtained from data corresponding
to an integrated luminosity of 2.1 fb^-1 collected in proton-proton
collisions at sqrt(s) = 7 TeV with the ATLAS detector at the CERN Large
Hadron Collider. No excess above the Standard Model background
expectation is observed. Excluded mass regions for Majorana and Dirac
neutrinos are presented using two approaches for interactions that
violate lepton and lepton-flavour numbers. One approach uses an
effective operator framework, the other approach is guided by the
Left-Right Symmetric Model. The results described in this letter
represent the most stringent limits to date on the masses of heavy
neutrinos and WR bosons obtained in direct searches.