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arXiv · 1101.1390

Study of tau-pair production at HERA

ZEUS Collaboration
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Abstract

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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ZEUS Collaboration. 2011-03-10. Study of tau-pair production at HERA. https://doi.org/10.1007/jhep02(2011)117

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