Energy Calibration of b-Quark Jets with Z->b-bbar Decays at the Tevatron Collider

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dc.creatorDonini, Julien
dc.creatorDorigo, Tommaso
dc.creatorHatakeyama, Kenichi
dc.creatorKwang, Shawn
dc.creatorNeu, Christopher
dc.creatorShochet, Melvyn
dc.creatorTomura, Tomonobu
dc.creatorTosi, Mia
dc.creatorWhiteson, Daniel
dc.date2008-01-25
dc.date.accessioned2026-07-07T11:55:33Z
dc.date.available2026-07-07T11:55:33Z
dc.descriptionThe energy measurement of jets produced by b-quarks at hadron colliders suffers from biases due to the peculiarities of the hadronization and decay of the originating B hadron. The impact of these effects can be estimated by reconstructing the mass of Z boson decays into pairs of b-quark jets. From a sample of 584 pb-1 of data collected by the CDF experiment in 1.96 TeV proton-antiproton collisions at the Tevatron collider, we show how the Z signal can be identified and measured. Using the reconstructed mass of Z candidates we determine a jet energy scale factor for b-quark jets with a precision better than 2%. This measurement allows a reduction of one of the dominant source of uncertainty in analyses based on high transverse momentum b-quark jets. We also determine, as a cross-check of our analysis, the Z boson cross section in hadronic collisions using the b-bbar final state as sigma x B(Z->b-bbar) = 1578 +636 -410 pb.
dc.description35 pages, 9 figures, submitted to Nuclear Instruments and Methods in Physics Research Section A
dc.identifierhttps://arxiv.org/abs/0801.3906
dc.identifierhttp://arxiv.org/abs/0801.3906
dc.identifierNucl.Instrum.Meth.A596:354-367,2008
dc.identifierdoi:10.1016/j.nima.2008.08.133
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/205280
dc.subjectHigh Energy Physics - Experiment
dc.titleEnergy Calibration of b-Quark Jets with Z->b-bbar Decays at the Tevatron Collider
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