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X-WR-CALDESC:Eventi per INFN-LNF
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TZID:Europe/Rome
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TZOFFSETFROM:+0100
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TZNAME:CEST
DTSTART:20190331T010000
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TZNAME:CET
DTSTART:20191027T010000
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BEGIN:VEVENT
DTSTART;TZID=Europe/Rome:20190319T110000
DTEND;TZID=Europe/Rome:20190319T120000
DTSTAMP:20260831T035155
CREATED:20190214T185343Z
LAST-MODIFIED:20190326T184719Z
UID:17944-1552993200-1552996800@w3.lnf.infn.it
SUMMARY:Top-mass observables: NLO + parton Shower effects and renormalons
DESCRIPTION:In this talk I will discuss some theoretical subtleties of the top-quark mass determination\, issue which persists in being highly controversial. \nIn the first part of the talk I will compare several NLO generators for top-pair production implemented in the POWHEG BOX framework\, that differ by the level of accuracy employed to describe the top decay. The impact of the shower Monte Carlo programs\, used to complet the NLO events generated by POWHEG BOX\, is also studied. In particular\, I discuss the two most widely used shower Monte Carlo programs\, i.e. Pythia 8.2 and Herwig 7.1\, and how it is possible to interface them with processes that contain decayed emitting resonances. The second part is instead devoted to the study of linear renormalons in observables that can be employed to determine the top mass.
URL:/event/top-mass-observables-nlo-parton-shower-effects-and-renormalons/
LOCATION:Aula Seminari\, Via Enrico Fermi\, 40\, Frascati\, Roma\, 00044\, Italia
CATEGORIES:Seminari teorici
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