Jul 4 – 11, 2012
Melbourne Convention and Exhibition Centre
Australia/Melbourne timezone
ICHEP2012 - 36th International Conference for High Energy Physics

Study of tau-pair production at HERA

Jul 5, 2012, 5:00 PM
Room 218 (Melbourne Convention and Exhibition Centre)

Room 218

Melbourne Convention and Exhibition Centre

Melbourne Australia
Parallel Sessions Track 1 - The Standard Model and EW Symmetry Breaking - Higgs Searches TR 12 - Formal Theory Development & TR 1 - The Standard Model


Mr Masaki Ishitsuka (Tokyo Institute of Technology)


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.

Primary author

Mr Masaki Ishitsuka (Tokyo Institute of Technology)

Presentation materials