Search for Pair Production of a Heavy Up-Type Quark Decaying to a W Boson and a b Quark in the lepton plus jets Channel with the ATLAS Detector
Number of Authors: 3034
2012 (English)In: Physical Review Letters, ISSN 0031-9007, Vol. 108, no 26, 261802- p.Article in journal (Refereed) Published
A search is presented for production of a heavy up-type quark (t') together with its antiparticle, assuming subsequent decay to a W boson and a b quark, t'(t) over bar' -> W(+)bW(-)(b) over bar. The search is based on 1.04 fb(-1) of proton-proton collisions at root s = 7 TeV collected by the ATLAS detector at the CERN Large Hadron Collider. Data are analyzed in the lepton + jets final state, characterized by a high transverse momentum isolated electron or muon, high missing transverse momentum, and at least three jets. No significant excess of events above the background expectation is observed. A 95% C.L. lower limit of 404 GeV is set for the mass of the t' quark.
Place, publisher, year, edition, pages
2012. Vol. 108, no 26, 261802- p.
IdentifiersURN: urn:nbn:se:kth:diva-99503DOI: 10.1103/PhysRevLett.108.261802ISI: 000305689400013ScopusID: 2-s2.0-84863327716OAI: oai:DiVA.org:kth-99503DiVA: diva2:542380
QC 20120731. Author count: 30342012-07-312012-07-31Bibliographically approved