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.

Study of tau-pair production at HERA

COSTA, Marco;FERRERO, Maria Italia;MONACO, Vincenzo;SACCHI, Roberto;SOLA, VALENTINA;SOLANO, Ada Maria;
2011-01-01

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.
2011
02
117
-
http://dx.doi.org/10.1007/JHEP02(2011)117
High Energy Physics; HERA; ZEUS Collaboration.
H. Abramowicz;I. Abt;L. Adamczyk;M. Adamus;R. Aggarwal;S. Antonelli;P. Antonioli;A. Antonov;M. Arneodo;V. Aushev;Y. Aushev;O. Bachynska;A. Bamberger;A...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2318/97398
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