Measurement of σ(pp̄→Z)·Br(Z→ττ) at √s=1.96 TeV

Journal article

We present a measurement of the cross section for Z production times the branching fraction to τ leptons, σ·Br(Z → τ+τ-), in pp̄ collisions at √s = 1.96 TeV in the channel in which one τ decays into μνμν τ, and the other into hadrons + ντ or eνeντ. The data sample corresponds to an integrated luminosity of 226 pb-1 collected with the D0 detector at the Fermilab Tevatron collider. The final sample contains 2008 candidate events with an estimated background of 55%. From this we obtain σ·Br(Z → τ+τ-) = 237 ± 15(stat) ± 18(sys) ± 15(lum)pb, in agreement with the standard model prediction. © 2005 The American Physical Society.

Authors: Abazov, V; Abbott, B; Abolins, M; Acharya, B; Adams, M

• Journal: Physical Review D
• Volume: 71
• Issue: 7
• Pages: 1-7
• Publication date: 2005-04-01
• DOI: 10.1103/PhysRevD.71.072004
• ISSN: 1550-7998
• Language: English