Search for heavy neutrinos and right-handed W bosons in events with two leptons and jets in pp collisions at root s=7 TeV with the ATLAS detector
Number of Authors: 3034
2012 (English)In: European Physical Journal C, ISSN 1434-6044, E-ISSN 1434-6052, Vol. 72, no 7, 2056- p.Article in journal (Refereed) Published
This letter reports on a search for hypothetical heavy neutrinos, N, and right-handed gauge bosons, W-R, in events with high transverse momentum objects which include two reconstructed leptons and at least one hadronic jet. The results were obtained from data corresponding to an integrated luminosity of 2.1 fb(-1) collected in proton-proton collisions at root 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-flavor 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 W-R bosons obtained in direct searches.
Place, publisher, year, edition, pages
2012. Vol. 72, no 7, 2056- p.
Left-Right Symmetry, Majorana Neutrinos, Parity, Mass, Oscillations, Violation, Energies, Lep
IdentifiersURN: urn:nbn:se:kth:diva-102693DOI: 10.1140/epjc/s10052-012-2056-4ISI: 000307269400004ScopusID: 2-s2.0-84865600140OAI: oai:DiVA.org:kth-102693DiVA: diva2:555867
QC 20120921. Author count: 3034.2012-09-212012-09-21Bibliographically approved