2026-09-20T05:58:53Zhttps://digital.lib.washington.edu/server/oai/request

oai:digital.lib.washington.edu:1773/206972025-01-07T20:52:31Zcom_1773_4888col_1773_4956

Goussiou, Anna GRIFFITHS, Justin Adam 2012-09-13T17:30:16Z 2012-09-13T17:30:16Z 2012-09-13 2012 GRIFFITHS_washington_0250E_10206.pdf http://hdl.handle.net/1773/20697 Thesis (Ph.D.)--University of Washington, 2012 The first measurement of the inclusive cross-section of the <italic>Z</italic> boson decaying to two tau leptons was measured with the ATLAS detector at the LHC. The data sample in this analysis represents an integrated luminosity of 35 pb<super>-1</super> of proton-proton collisions at a center of mass energy of sqrt(s)=7 TeV. Separate measurements were performed in four decay modes based on how the two tau leptons decay: to hadrons and an electron, to hadrons and a muon, to an electron and a muon, and to two muons. In all four final states, inclusive cross-section measurements were made both in the fiducial region of the ATLAS detector where acceptance is high and in the full phase space, restricted to the mass range of [66, 116] GeV. The measurements from the four individual channels were then combined to yield the combined <italic>Z</italic>→ττ cross-section of 970 ± 70 (stat.) ± 60 (sys.) ± 30 (lumi.) pb. application/pdf en_US Copyright is held by the individual authors. ATLAS; Cross-section; LHC; Zboson Physics Particle physics Physics Measurement of the Z tau tau boson production cross-section in proton-proton collisions at sqrt(s) = TeV with the ATLAS detector Thesis No embargo open.access