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. RI Gladilin, Leonid/B-5226-2011; Katkov, Igor/E-2627-2012; Fazio, Salvatore /G-5156-2010

Study of tau-pair production at HERA

CAPUA, Marcella;Fazio S;MASTROBERARDINO, Anna;Schioppa M;Susinno G;TASSI, Enrico;
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. RI Gladilin, Leonid/B-5226-2011; Katkov, Igor/E-2627-2012; Fazio, Salvatore /G-5156-2010
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.11770/133691
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