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Measurement of σ(pp-bar→Z)⋅Br(Z→ττ) at s√=1.96 TeV
Baringer, Philip S. Bean, Alice Coppage, Don Hensel, Carsten Jabeen, S. Wilson, Graham Wallace Gardner, J. Christofek, L.
Baringer, Philip S.
Bean, Alice
Coppage, Don
Hensel, Carsten
Jabeen, S.
Wilson, Graham Wallace
Gardner, J.
Christofek, L.
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Abstract
We present a measurement of the cross section for Z production times the branching fraction to τ leptons, σ⋅Br(Z→τ(+)τ(−)), in pp¯ collisions at s√=1.96 TeV in the channel in which one τ decays into μνμντ, and the other into hadrons+ν(τ) or eν(e)ν(τ). 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.
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This is the publisher's version, also available electronically from http://journals.aps.org/prd/abstract/10.1103/PhysRevD.71.072004.
Date
2005-04-11
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American Physical Society
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V. M. Abazov et al. (D0 Collaboration). (2005). "Measurement of σ(pp-bar→Z)⋅Br(Z→ττ) at s√=1.96 TeV." Physical Review D, 77(7):072004. http://dx.doi.org/10.1103/PhysRevD.71.072004.