The Z→ττ cross section is measured with the ATLAS experiment at the LHC in four different final states determined by the decay modes of the τ leptons: muon-hadron, electron-hadron, electron-muon, and muon-muon. The analysis is based on a data sample corresponding to an integrated luminosity of 36pb -1, at a proton-proton center-of-mass energy of √s=7TeV. Cross sections are measured separately for each final state in fiducial regions of high detector acceptance, as well as in the full phase space, over the mass region 66-116 GeV. The individual cross sections are combined and the product of the total Z production cross section and Z→ττ branching fraction is measured to be 0.97±0.07(stat)±0.06(syst)±0.03(lumi)nb, in agreement with next-to-next-to-leading order calculations. © 2011 CERN.

Measurement of the Z→ττ cross section with the ATLAS detector / G., A., B., A., J., A., A., A., A., A., O., A., B., A., M., A., H., A., H., A., E., A., B., A., D., A., T., A., J., A., M., A., S., A., P., A., T., A., S., A., et al.. - In: PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY. - ISSN 1550-7998. - 84:11(2011). [10.1103/physrevd.84.112006]

Measurement of the Z→ττ cross section with the ATLAS detector

G. Artoni;BAGNAIA, Paolo;BINI, Cesare;DE CECCO, Sandro;DIONISI, Carlo;GENTILE, Simonetta;GIAGU, Stefano;M. Kado;LACAVA, Francesco;LUCI, Claudio;MESSINA, Andrea;MONZANI, SIMONE;A. Policicchio;SOLFAROLI CAMILLOCCI, ELENA;VERDUCCI, MONICA;
2011

Abstract

The Z→ττ cross section is measured with the ATLAS experiment at the LHC in four different final states determined by the decay modes of the τ leptons: muon-hadron, electron-hadron, electron-muon, and muon-muon. The analysis is based on a data sample corresponding to an integrated luminosity of 36pb -1, at a proton-proton center-of-mass energy of √s=7TeV. Cross sections are measured separately for each final state in fiducial regions of high detector acceptance, as well as in the full phase space, over the mass region 66-116 GeV. The individual cross sections are combined and the product of the total Z production cross section and Z→ττ branching fraction is measured to be 0.97±0.07(stat)±0.06(syst)±0.03(lumi)nb, in agreement with next-to-next-to-leading order calculations. © 2011 CERN.
2011
01 Pubblicazione su rivista::01a Articolo in rivista
Measurement of the Z→ττ cross section with the ATLAS detector / G., A., B., A., J., A., A., A., A., A., O., A., B., A., M., A., H., A., H., A., E., A., B., A., D., A., T., A., J., A., M., A., S., A., P., A., T., A., S., A., et al.. - In: PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY. - ISSN 1550-7998. - 84:11(2011). [10.1103/physrevd.84.112006]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/449285
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