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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ArXiv ePrint:1101.1390
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ZEUS collaboration., Levy, A., Abramowicz, H. et al. Study of taupair production at HERA. J. High Energ. Phys. 2011, 117 (2011). https://doi.org/10.1007/JHEP02(2011)117
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DOI: https://doi.org/10.1007/JHEP02(2011)117