Study of tau-pair production at HERA

Details Study of tau-pair production at HERA Study of tau-pair production at HERA

2011-01-07

arxiv.org/abs/1101.1390v2

JHEP 1102:117,2011

Physics

High Energy Physics

High Energy Physics - Experiment

19 pages, 2 tables, 5 figures, minor corrections after submission to JHEP

Scientific paper

10.1007/JHEP02(2011)117

A study of events containing two tau leptons with high transverse momentum has been performed with the ZEUS detector at HERA, using a data sample corresponding to an integrated luminosity of 0.33 fb-1. The tau candidates were identified from their decays into electrons, muons or hadronic jets. The number of tau-pair candidates has been compared with the prediction from the Standard Model, where the largest contribution is expected from Bethe-Heitler processes. The total visible cross section was extracted.Standard Model expectations agree well with the measured distributions, also at high invariant mass of the tau pair.

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