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Measurement of K0S and [Lambda]0 in tt̄ production in dileptonic events in pp collisions at √s=7 TeV with the ATLAS detector

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Measurement of K0S and [Lambda]0 production in tt̄ production in $$t\bar{t}$$tt¯ final states have been performed. They are based on a data sample with integrated luminosity of 4.6 $$\mathrm {fb}^{-1}$$fb-1 from proton-proton collisions at a centre-of-mass energy of 7 TeV, collected in 2011 with the...

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Autori principali: Aad, Georges (Autore) , Anders, Christoph (Autore) , Andrei, George Victor (Autore) , Antel, Claire (Autore) , Bolz, Arthur (Autore) , Brandt, Oleg (Autore) , Dunford, Monica (Autore) , Ferreira de Lima, Danilo Enoque (Autore) , Franchino, Silvia (Autore) , Geisler, Manuel Patrice (Autore) , Helary, Louis (Autore) , Jongmanns, Jan (Autore) , Klassen, Martin (Autore) , Kolb, Mathis (Autore) , Krishnan, Anjali (Autore) , Kugel, Andreas (Autore) , Lisovyi, Mykhailo (Autore) , Meyer zu Theenhausen, Hanno (Autore) , Napolitano, Fabrizio (Autore) , Narrias Villar, Daniel Isaac (Autore) , S̜ahinsoy, Merve (Autore) , Schöning, André (Autore) , Schultz-Coulon, Hans-Christian (Autore) , Spieker, Thomas (Autore) , Stamen, Rainer (Autore) , Starovoitov, Pavel (Autore) , Suchek, Stanislav (Autore) , Vigani, Luigi (Autore) , Wang, Jike (Autore) , Weber, Sebastian (Autore) , Wessels, Martin (Autore) , Yue, Xiaoguang (Autore)
Ente Autore: ATLAS Collaboration (Autore)
Natura: Article (Journal)
Lingua:inglese
Pubblicazione: 17 December 2019
In: The European physical journal. C, Particles and fields
Year: 2019, Volume: 79, Fascicolo: 12
ISSN:1434-6052
DOI:10.1140/epjc/s10052-019-7512-y
Accesso online:Verlag, Volltext: https://doi.org/10.1140/epjc/s10052-019-7512-y
Verlag: https://link.springer.com/article/10.1140/epjc/s10052-019-7512-y
Testo
Note sull'autore:The ATLAS Collaboration. G. Aad [und weitere]
Descrizione
Riassunto:Measurement of K0S and [Lambda]0 production in tt̄ production in $$t\bar{t}$$tt¯ final states have been performed. They are based on a data sample with integrated luminosity of 4.6 $$\mathrm {fb}^{-1}$$fb-1 from proton-proton collisions at a centre-of-mass energy of 7 TeV, collected in 2011 with the ATLAS detector at the Large Hadron Collider. Neutral strange particles are separated into three classes, depending on whether they are contained in a jet, with or without a b-tag, or not associated with a selected jet. The aim is to look for differences in their main kinematic distributions. A comparison of data with several Monte Carlo simulations using different hadronisation and fragmentation schemes, colour reconnection models and different tunes for the underlying event has been made. The production of neutral strange particles in $$t\bar{t}$$tt¯ dileptonic events is found to be well described by current Monte Carlo models for $$K_S^0$$KS0 and $$\Lambda ^0$$Λ0 production within jets, but not for those produced outside jets.
Descrizione del documento:The ATLAS Collaboration: C. Anders, V. Andrei, C. Antel, A. Bolz, O. Brandt, M. Dunford, D.E. Ferreira de Lima, S. Franchino, M.P. Geisler [und weitere]
Gesehen am 17.02.2020
Im Titel steht der Buchstabe "s" unter dem Wurzelsymbol
Im Titel steht der Buchstae "S" unter der Zahl "0"
Im Titel ist "Lambda" als griechischer Buchstabe dargestellt
Descrizione fisica:Online Resource
ISSN:1434-6052
DOI:10.1140/epjc/s10052-019-7512-y

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