How Well Can We Reconstruct the ttbar System Near its Threshold at Future e+e- Linear Colliders?

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dc.creatorIkematsu, Katsumasa
dc.creatorFujii, Keisuke
dc.creatorHioki, Zenro
dc.creatorSumino, Yukinari
dc.creatorTakahashi, Tohru
dc.date2003-02-24
dc.date.accessioned2026-07-07T12:26:26Z
dc.date.available2026-07-07T12:26:26Z
dc.descriptionWe developed a new method for full kinematical reconstruction of the ttbar system near its threshold at future linear e+e- colliders. In the core of the method lies likelihood fitting which is designed to improve measurement accuracies of the kinematical variables that specify the final states resulting from ttbar decays. The improvement is demonstrated by applying this method to a Monte-Carlo ttbar sample generated with various experimental effects including beamstrahlung, finite acceptance and resolution of the detector system, etc. In most cases the fit brings a broad non-Gaussian distribution of a given kinematical variable to a nearly Gaussian shape, thereby justifying phenomenological analyses based on simple Gaussian smearing of parton-level momenta. The standard deviations of the resultant distributions of various kinematical variables are given in order to facilitate such phenomenological analyses. A possible application of the kinematical fitting method and its expected impact are also discussed.
dc.description14 pages, LaTeX, 11 figures
dc.identifierhttps://arxiv.org/abs/hep-ph/0302214
dc.identifierhttp://arxiv.org/abs/hep-ph/0302214
dc.identifierEur.Phys.J.C29:1-10,2003
dc.identifierdoi:10.1140/epjc/s2003-01202-9
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/214882
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectHigh Energy Physics - Experiment
dc.titleHow Well Can We Reconstruct the ttbar System Near its Threshold at Future e+e- Linear Colliders?
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